Motherboards / Compare

GIGABYTE B550M K vs MSI B860M GAMING PLUS WIFI

A

Product A: GIGABYTE

B550M K

49 of 78 known

Change GIGABYTE B550M K

Compare the MSI B860M GAMING PLUS WIFI with

Search motherboards

B

Product B: MSI

B860M GAMING PLUS WIFI

64 of 78 known

Change MSI B860M GAMING PLUS WIFI

Compare the GIGABYTE B550M K with

Search motherboards

All 78 fields

Every value links to where we found it.

Only differences

AGIGABYTE B550M K

BMSI B860M GAMING PLUS WIFI

General

2 of 9 differ

Series

Not available

GAMING PLUS1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Cover and Special Features: B860M GAMING PLUS WIFI. GAMING PLUS is the series name in the product name.

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

B550M K1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026The manual cover names the model B550M K. The product page lists revisions 1.0, 1.1 and 1.2 under the same name.

B860M GAMING PLUS WIFI, 911-7E42-003, 7E42-003R, 601-7E42-02S2Maker product pageit-store.msi.com/products/b860m-gaming-plus-wifi-shede-madriRead 15 October 2026MSI Italy store order code 911-7E42-003 (SKU in the store feed) for B860M GAMING PLUS WIFI.5Retailer pageoffice-partner.de/msi-b860m-gaming-plus-wifi-n2008219103Read 15 October 2026Manufacturer number 7E42-003R.6Spec databasebuildcores.com/products/Motherboard/mz6xvk5k6/MSI-B860M-GAMING-PLUS-WIFI-DDR5-Micro-ATXRead 15 October 2026Part numbers: B860M GAMING PLUS WIFI, 7E42-003R, 601-7E42-02S, B860MGPW. The page's slot counts are wrong and are not used.

GTIN / EAN

4719331852764, 8895230360064Retailer pageik.imagekit.io/pimberly/65707b38e31f5a94719d7ba0/4a6bea2c/66f2e2428f76e40019820f68/product-pdfRead 15 October 2026Product data sheet for the part B550M K, publication date 24-SEP-2024, barcodes 4719331852764 and 889523036006. Amazon and BuildCores list the same UPC, and several retailers list the same EAN.5Retailer pageamazon.com/dp/B0BTTZFQTPRead 15 October 2026Item details: UPC 889523036006.8Spec databasebuildcores.com/products/Motherboard/x8q2g3bog/Gigabyte-B550M-K-AM4-DDR4-Micro-ATXRead 15 October 2026UPC 889523036006 and EAN 4719331852764. BuildCores also lists EANs 4719331880811 and 4719331805654, which no other source confirms, so they are not stored.

4711377286558, 8241423929355Retailer pageoffice-partner.de/msi-b860m-gaming-plus-wifi-n2008219103Read 15 October 2026EAN/GTIN 4711377286558.6Spec databasebuildcores.com/products/Motherboard/mz6xvk5k6/MSI-B860M-GAMING-PLUS-WIFI-DDR5-Micro-ATXRead 15 October 2026UPC 824142392935 and EAN 0824142392935. The aztekc.com listing gives the same UPC.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

Not available

Not available

Status

Available5Retailer pageamazon.com/dp/B0BTTZFQTPRead 15 October 2026The page showed the board In Stock on 2026-10-15. Best Sellers Rank was 18 in Computer Motherboards.

Available2Maker product pageit-store.msi.com/products/b860m-gaming-plus-wifi-shede-madriRead 15 October 2026The product is listed for sale at 186 EUR on 2026-10-15.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

Not available

Not available

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

Not available

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

Not available

Not available

ColoursiThe maker's own colour names

Not available

Not available

SegmentiThe maker's own product category, e.g. ASUS ProArt is Creator. It is not assigned from price or features. Maker lines that are not gaming, creator or workstation lines, such as ASUS PRIME, MSI PRO and ASRock Pro, are mainstream.

Mainstream4Retailer pageik.imagekit.io/pimberly/65707b38e31f5a94719d7ba0/4a6bea2c/66f2e2428f76e40019820f68/product-pdfRead 15 October 2026The data sheet title names no gaming or creator use. Its tagline reads AMD B550 Ultra Durable. The board is not in a GIGABYTE AORUS, GAMING or EAGLE line, so it is stored as mainstream.

Gaming3Reviewakiba-pc.watch.impress.co.jp/docs/topic/special/2034759.htmlRead 15 October 2026The review calls the GAMING PLUS series the entry class of MSI's gaming motherboards, below MEG, MPG and MAG.

Board revisioniThe maker's revision name, e.g. rev. 1.1, for variant rows of revisions that keep the board's name and model number. Leave it out when the maker names no revision.

Not available

Not available

Platform

4 of 4 differ

CPU socketiSocket name without spaces, e.g. AM5 or LGA1851.

AM41Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2: AMD Socket AM4.

LGA18511Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, CPU: processor socket LGA1851.

ChipsetiChipset with its brand and without the word chipset, e.g. AMD B850, AMD X870E or Intel Z890. Same form as desktop PCs and as compatible chipsets on CPUs.

AMD B5501Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2: Chipset AMD B550.

Intel B8601Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications: Intel B860 Chipset.

Supported processorsiProcessor series the maker lists for the board, one item per series in the chip maker's name. BIOS updates can add series later.

AMD Ryzen 5000 Series, AMD Ryzen 5000 G-Series, AMD Ryzen 4000 G-Series, AMD Ryzen 3000 Series1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2 lists AMD Ryzen 5000 G-Series, 5000 Series, 4000 G-Series and 3000 Series Processors and refers to GIGABYTE's website for the latest CPU support list. The Rev. 1102 manual adds Ryzen 3000 G-Series, which LDLC says rev. 1.0 boards do not support (3200G and 3400G), so only the four series both manuals list are stored. The list was read on 2026-10-15.2Owner's manualregard.ru/api/site/files/goodspdf/download/30802Read 15 October 2026GIGABYTE User's Manual Rev. 1102, copyright 2026, for B550M K WIFI6E and B550M K, linked from a Russian retailer's page for rev. 1.2. Section 2-2 lists Ryzen 5000 G-Series, 5000, 4000 G-Series, 3000 G-Series and 3000 Series. The four series that rev. 1.0 also lists are stored.

Intel Core Ultra (Series 2)1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, CPU: Intel Core Ultra Processors (Series 2). The manual says to check msi.com for the newest support status. Read on 2026-10-15. BIOS updates can add series later.

CPU overclockingiThe board allows multiplier overclocking of an unlocked CPU. Memory overclocking alone does not count.

Yes6Maker product pageamd.com/en/products/processors/chipsets/am4.htmlRead 15 October 2026AMD's AM4 chipset specifications table, B550 row: Overclocking Enabled: Yes. This is the chipset maker's feature, not a board spec. The board's BIOS options were not checked.

No4Press articlepugetsystems.com/labs/articles/z890-vs-b860-vs-h810Read 15 October 2026The chipset table lists overclocking for B860 as RAM only, and the text says the B860 chipset only supports memory overclocking. This is the chip maker's feature as Puget reports it. It is not a board spec.

Board

1 of 5 differ

Form factoriThe maker's stated board standard. Other covers sizes such as XL-ATX or Mini-DTX.

Micro-ATX1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2: Micro ATX Form Factor, 24.4cm x 24.4cm.

Micro-ATX1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications: mATX Form Factor, 9.6 in. x 9.6 in. (244 mm x 244 mm).

Board dimensionsiSize of the board itself. Height runs along the rear I/O edge, as the board stands in a tower case. ATX is 244 mm wide and 305 mm high. Micro ATX is 244 mm high and up to 244 mm wide. A size with a cover that reaches past the board, as NZXT prints, is not used when the maker also states the board size.

Width244Height244mm(9.6 × 9.6 in)1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2: 24.4cm x 24.4cm, stored as 244 mm by 244 mm.

Width244Height244mm(9.6 × 9.6 in)1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications: 9.6 in. x 9.6 in. (244 mm x 244 mm), stored as 244 mm x 244 mm. The MSI Italy store page states the PCB as 243.84mm x 243.84mm, the exact conversion of 9.6 in.2Maker product pageit-store.msi.com/products/b860m-gaming-plus-wifi-shede-madriRead 15 October 2026PCB Info: mATX, 243.84mm x 243.84mm. This rounds to the stored 244 mm.

PCB layersiCopper layers in the circuit board as published.

Not available

62Maker product pageit-store.msi.com/products/b860m-gaming-plus-wifi-shede-madriRead 15 October 2026Key features: 6-layer server-grade level PCB.

Back-connect designiPower, fan and front-panel connectors sit on the back of the board to hide the cables, e.g. ASUS BTF, MSI Project Zero or GIGABYTE Stealth. It needs a case made for it.

No1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026The section 1-1 layout and the section 2-7 connector list show the usual front-side power, fan and USB connectors.

No1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026The Overview of Components chapter shows the usual front-side power, fan and USB connectors.

RGB lighting on the boardiLEDs on the board itself. Headers for external lighting are counted under Internal connectors. True only when the maker's spec or feature list names lighting on the board. A single small LED that a reviewer sees does not count.

No1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026The complete Specifications list names no lighting on the board and no LED feature. The internal connector list has no RGB or ARGB header.

No1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, LED Features: only the 4x EZ Debug LED and the RGB and ARGB headers. The complete LED list names no lighting on the board.

Power delivery

5 of 6 differ

Power stage layoutiAs the maker publishes it, e.g. 18+2+2. The first number is the CPU core (Vcore) rail. Makers group the other rails differently, so compare the first number. Doubled or teamed stages are written as the maker prints them, such as MSI's 12+2+1 Duet Rail. A review's count of real phases goes in the source note.

3+35Retailer pageamazon.com/dp/B0BTTZFQTPRead 15 October 2026The GIGABYTE-branded listing says Digital 3+3 VRM Design in its bullets and 3+3 Power Phase in its title. GIGABYTE's own specification page and manuals give no phase count. A 4+3 count in an unreliable review and a 5+3 count on one retailer page disagree. The board photo on this page shows six output chokes beside the CPU socket, so the phases may be doubled and no Vcore stage count is stored.

12+1+1+12Maker product pageit-store.msi.com/products/b860m-gaming-plus-wifi-shede-madriRead 15 October 2026Key features: 12+1+1+1 Duet Rail Power System with P-PAK, 8+4-pin CPU power connectors.3Reviewakiba-pc.watch.impress.co.jp/docs/topic/special/2034759.htmlRead 15 October 2026VRM text: a 12+1+1+1 phase power circuit with a large heatsink. The reviewer writes DRPS where MSI writes Duet Rail.

CPU core (Vcore) power stagesiPower stages on the Vcore rail. Makers call them phases or power stages. A doubled design has more stages than controller phases. Use the first number of the maker's layout, such as 14 for MSI's 14+2+1 Duet Rail. A review's different count goes in the source note.

Not available

123Reviewakiba-pc.watch.impress.co.jp/docs/topic/special/2034759.htmlRead 15 October 2026VRM text: the 12 phases for the CPU core use P-PAK MOSFETs. MSI shows no current rating for them.

Vcore power stage ratingiCurrent rating of each Vcore power stage. Only a figure the maker or a copy of the maker's text states. A review's reading of the chip markings is not enough.

Not available

Not available

VRM controlleriPWM controller chip with maker, e.g. MPS MP2857. One name: the maker's when published, otherwise the one name a review uses. No parentheses. Other names go in the source note. Use the part number without the date code in the chip marking.

Not available

Richtek RT3638AJ3Reviewakiba-pc.watch.impress.co.jp/docs/topic/special/2034759.htmlRead 15 October 2026Photo caption: the digital PWM controller is the Richtek RT3638AJ. MSI does not name the controller.

CPU power connectorsiEPS 12 V connectors for the CPU as pin counts, e.g. 8+8 pin, 8+4 pin or 8 pin.

8 pin1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2 Internal Connectors: 1 x 24-pin ATX main power connector and 1 x 8-pin ATX 12V power connector.

8+4 pin1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, Power Connectors: 1x 8-pin +12V power connector and 1x 4-pin ATX 12V power connector, besides the 24-pin ATX connector.

Extra slot power connectoriA PCIe or other power connector on the board that feeds the expansion slots. The 24-pin and CPU connectors do not count. A connector the maker ties only to a front USB-C header does not count.

No1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026The complete internal connector list has only the 24-pin and 8-pin ATX 12V connectors, so there is no extra slot power connector.

Yes1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, Power Connectors: 1x 8-pin PCIe power connector (PCIE_PWR1). Special Features lists a Supplemental PCIe Power Connector.

Memory

5 of 6 differ

Memory type

DDR41Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2: 4 x DDR4 DIMM sockets.

DDR51Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, Memory: 4x DDR5 memory slots.

Memory slotsiDIMM slots on the board.

41Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2: 4 x DDR4 DIMM sockets.

41Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, Memory: 4x DDR5 memory slots with single-sided latches.

Max memoryiMaximum total capacity the maker states for the board. The maker's product page wins over an older manual, since a BIOS update can raise the value.

128GB1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2: up to 128 GB (32 GB single DIMM capacity) of system memory.

256GB1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, Memory: supporting up to 256GB. The manual lists no speeds. They are on the product page.

Max memory speed (overclocked)iHighest overclocked speed the maker lists for one module per channel, with the newest CPU family the board is sold for, e.g. Ryzen 9000 or Core Ultra 200S. Ryzen 8000 values are never used. The source note names the family and the other module setups. It is not the CPU's official speed. A JEDEC-only list such as 5600/4800 is not this value. When the maker lists a manual overclock and a memory profile speed, the higher one is stored. The maker's product page wins over an older manual, since a BIOS update can raise the value. A table that names the CPU family wins over a headline speed that names none.

4,733MT/s3Maker product pagegigabyte.com/Motherboard/B550M-K-rev-10/spRead 15 October 2026The search excerpt of the specification page lists DDR4 4733 (O.C.) as the top memory speed and 3200, 2933, 2667, 2400 and 2133 for plain modules. Ryzen 5000 is the newest processor family the board lists. The manuals list only the plain speeds up to 3200, so the product page is used, as the field rule says.4Retailer pageik.imagekit.io/pimberly/65707b38e31f5a94719d7ba0/4a6bea2c/66f2e2428f76e40019820f68/product-pdfRead 15 October 2026Supported memory clock speed (max) 4733 MHz, with the list 2133 up to 4733 MHz. It is the data rate in MT/s.5Retailer pageamazon.com/dp/B0BTTZFQTPRead 15 October 2026The listing's GIGABYTE infographic says DDR4 Overclocking up to 4733 MT/s.7Spec databasegeizhals.at/gigabyte-b550m-k-a2901610.htmlRead 15 October 2026RAM-Datenrate row: DDR4-3200 for Ryzen 3000 to 5000 and max. DDR4-4733 OC.

8,800MT/s2Maker product pageit-store.msi.com/products/b860m-gaming-plus-wifi-shede-madriRead 15 October 2026Memory table: Memory Support 8800 to 6400 (OC) MT/s. 1DPC 1R up to 8800+, 1DPC 2R up to 7200+, 2DPC 1R up to 6400+ and 2DPC 2R up to 5600+ MT/s. The intro line of the same page says 8600+ MT/s, so the page disagrees with itself. The higher table value is stored, which fits the rule for the higher figure. The table names no CPU family and the board takes Core Ultra (Series 2) only.

ECC memoryiThe board runs unbuffered ECC modules with ECC active. A board that runs ECC modules in non-ECC mode does not count. DDR5 on-die ECC does not count. A maker list of ECC and non-ECC unbuffered memory with no non-ECC mode qualifier counts as true, as on ASUS and ASRock AM5 boards. A note that ECC mode depends on the CPU, as ASUS writes for AM4 boards, still counts as true.

Yes1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2 lists support for ECC Un-buffered DIMM 1Rx8/2Rx8 and non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 modules with no non-ECC mode qualifier. GIGABYTE's product page says ECC support varies by CPU, which still counts as true.

No1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, Memory: supports non-ECC, un-buffered memory.

CUDIMM supportiThe board runs clocked unbuffered DIMMs (CUDIMM) with the clock driver active. Clock driver bypass mode only does not count. A plain "Supports CUDIMM" with no bypass limit, as ASRock and ASUS write it, counts as true.

Not available

Yes1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, Memory: Supports CUDIMM. No clock driver bypass limit is stated, so it counts as supported.

Expansion slots

3 of 3 differ

Expansion slotsiPhysical card slots. Storage M.2 slots are listed under Storage. The M.2 slot of a pre-installed Wi-Fi module is not listed. A full-length slot wired for x4 is PCIe x16 with 4 lanes.

AGIGABYTE B550M K

Physical slot	Electrical lanes	PCIe generation	Connected to	Count
PCIe x16	16	4	CPU	1
PCIe x1	1	3	Chipset	1

Source1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2 with Ryzen 5000 and 3000: 1 x PCI Express x16 slot from the CPU at PCIe 4.0 x16 (PCIe 3.0 x16 with Ryzen 5000 G-Series and 4000 G-Series) and 1 x PCI Express x1 slot from the chipset at PCIe 3.0 x1.

BMSI B860M GAMING PLUS WIFI

Physical slot	Electrical lanes	PCIe generation	Connected to	Count
PCIe x16	16	5	CPU	1
PCIe x16	1	4	Chipset	2
PCIe x16	4	4	Chipset	1

Source1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, Expansion Slots: 4x PCIe x16 slots. PCI_E1 from the CPU at up to PCIe 5.0 x16. PCI_E2 and PCI_E3 from the B860 chipset at up to PCIe 4.0 x1. PCI_E4 from the chipset at up to PCIe 4.0 x4. All four are full-length slots. The pre-installed Wi-Fi module sits in an M.2 Key-E slot, which is not listed.

Full-length PCIe slotsiCounts full-length slots, whatever their lane count.

1=CalculatedFrom Expansion slots

4=CalculatedFrom Expansion slots

Fastest PCIe x16 slot generationiHighest PCIe generation of a full-length slot. This is normally the graphics card slot.

4=CalculatedFrom Expansion slots

5=CalculatedFrom Expansion slots

Storage

3 of 4 differ

M.2 storage slotsiOne row per M key storage slot on the board, front or back. Slots on an included add-in card are not listed. Values are with the CPU family that gives the board its full connectivity. A slot listed for 25110 counts as M.2 22110. A slot listed for 2260 counts as M.2 2280.

AGIGABYTE B550M K

Slot	PCIe generation	PCIe lanes	Connected to	Longest drive	Takes SATA drives	Heatsink
M2A_CPU	4	4	CPU	M.2 2280	Yes	No
M2B_SB	3	2	Chipset	M.2 2280	No	No

Source1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2 with Ryzen 5000 and 3000. M2A_CPU is from the CPU, type 2280, SATA and PCIe 4.0 x4/x2 SSDs (PCIe 3.0 with 5000 G-Series and 4000 G-Series). M2B_SB is from the chipset, type 2280, PCIe 3.0 x2 SSDs, with no SATA mode listed. Section 2-7 item 6 shows both slots held by a clip and no heatsink. No lane sharing is stated.2Owner's manualregard.ru/api/site/files/goodspdf/download/30802Read 15 October 2026Section 2-2 gives the same M2A_CPU and M2B_SB slots, types and speeds as the Rev. 1001 manual.

BMSI B860M GAMING PLUS WIFI

Slot	PCIe generation	PCIe lanes	Connected to	Longest drive	Takes SATA drives	Heatsink
M2_1	5	4	CPU	M.2 2280	No	Yes
M2_2	4	4	Chipset	M.2 2280	No	No
M2_3	4	2	Chipset	M.2 2280	No	No

Source1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, M.2 SSD Slots: M2_1 from the CPU at up to PCIe 5.0 x4 and takes 2242, 2260 and 2280. M2_2 from the B860 chipset at PCIe 4.0 x4 and takes 2260 and 2280. M2_3 from the chipset at PCIe 4.0 x2 and takes 2280. The block diagram marks all three PCIe only, so no slot takes SATA. The M.2 chapter shows a Screwless M.2 Shield Frozr heatsink on M2_1 only. M2_2 and M2_3 have no heatsink.

M.2 slots

2=CalculatedFrom M.2 storage slots

3=CalculatedFrom M.2 storage slots

PCIe 5.0 M.2 slots

0=CalculatedFrom M.2 storage slots

1=CalculatedFrom M.2 storage slots

SATA portsiSATA 6Gb/s connectors on the board. SlimSAS connectors and M.2 slots that take SATA drives do not count.

41Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2: 4 x SATA 6Gb/s connectors from the chipset.

41Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications: 4x SATA 6Gb/s ports from the B860 chipset (SATA_5 to SATA_8).

Rear ports

5 of 5 differ

Rear portsiPhysical connectors on the rear I/O panel. Wi-Fi antenna connectors and buttons are not ports. 3.5 mm audio counts analog jacks of any role. A video input, such as the DisplayPort In of a Thunderbolt board, is Other.

AGIGABYTE B550M K

Type	Version	Count	Max link rate (Gbps)
USB-A	USB 3.2 Gen 1	4	5
USB-A	USB 2.0	4	0.48
DisplayPort	DisplayPort 1.4	1	Not available
HDMI	HDMI 2.1	1	Not available
Ethernet (RJ45)	Not available	1	1
3.5 mm audio	Not available	3	Not available
PS/2	Not available	1	Not available

Source1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2 Back Panel Connectors: 1 x PS/2 keyboard/mouse port, 1 x DisplayPort, 1 x HDMI port, 4 x USB 3.2 Gen 1 ports, 4 x USB 2.0/1.1 ports, 1 x RJ-45 port and 3 x audio jacks. The list has no button and no optical S/PDIF port. LAN is 1 Gbps. DisplayPort 1.4 (5120x2880 at 60 Hz) and HDMI 2.1 (4096x2160 at 60 Hz) work only with Ryzen 5000 G-Series and 4000 G-Series processors, which have integrated graphics.2Owner's manualregard.ru/api/site/files/goodspdf/download/30802Read 15 October 2026Section 2-2 gives the same back panel list as the Rev. 1001 manual. Its LAN line adds 10 Mbps to 1 Gbps and 100 Mbps.

BMSI B860M GAMING PLUS WIFI

Type	Version	Count	Max link rate (Gbps)	Thunderbolt or USB4	Power out (W)	DP Alt Mode
USB-C	USB4	1	40	Thunderbolt 4	15	Yes
USB-C	USB 3.2 Gen 1	1	5	Not available	Not available	Not available
USB-A	USB 3.2 Gen 2	1	10	Not available	Not available	Not available
USB-A	USB 3.2 Gen 1	2	5	Not available	Not available	Not available
USB-A	USB 2.0	2	0.48	Not available	Not available	Not available
HDMI	HDMI 2.1	1	Not available	Not available	Not available	Not available
DisplayPort	DisplayPort 1.4	1	Not available	Not available	Not available	Not available
Ethernet (RJ45)	Not available	1	5	Not available	Not available	Not available
3.5 mm audio	Not available	3	Not available	Not available	Not available	Not available

Source1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, Back Panel Connectors and the back panel chapter: 1x DisplayPort, 1x HDMI, 1x Thunderbolt 4 USB-C port from the CPU with DisplayPort over USB Type-C, 2x USB 2.0 Type-A, 1x clear CMOS button, 1x 5Gbps LAN (RJ45), 1x USB 10Gbps Type-A, 1x USB 5Gbps Type-C, USB 5Gbps Type-A ports, 2x Wi-Fi antenna connectors and 3 audio jacks (line-in, line-out and mic-in). The block diagram shows the 5Gbps Type-A ports as two. The MSI Italy store page lists 2x USB 5Gbps Type A. HDMI 2.1 and DisplayPort 1.4 are on the Onboard Graphics row, only on processors with integrated graphics. The Thunderbolt port is written as USB4 and its power output of 5V/3A, 15W is from the MSI Italy store page.2Maker product pageit-store.msi.com/products/b860m-gaming-plus-wifi-shede-madriRead 15 October 2026Thunderbolt section: 1x Thunderbolt 4 port, up to 40Gbps with Thunderbolt devices and up to 5V/3A, 15W power charging. USB list: 2x USB 5Gbps Type A (Rear), 1x USB 5Gbps Type C (Rear), 1x USB 10Gbps Type A (Rear) and 2x USB 2.0 (Rear). LAN: Intel Killer E5000 5Gbps. The page writes the DisplayPort over USB-C port as DisplayPort 2.1 with UHBR20. That is a video output detail and is not stored.

Rear USB ports

8=CalculatedFrom Rear ports

7=CalculatedFrom Rear ports

Rear USB-C portsiIncludes Thunderbolt and USB4 ports.

0=CalculatedFrom Rear ports

2=CalculatedFrom Rear ports

Fastest rear USB port

5Gbps=CalculatedFrom Rear ports

40Gbps=CalculatedFrom Rear ports

ThunderboltiThunderbolt on the rear panel. A header for an add-in card does not count.

Not available

Yes=CalculatedFrom Rear ports

Internal connectors

5 of 5 differ

Internal USB headersiHeaders for front-panel USB ports. The header count may be left out when the maker states only the front ports served.

AGIGABYTE B550M K

Header	Max data rate (Gbps)	Headers	Front ports served
USB 3 header (19-pin)	5	1	2
USB 2.0 header (9-pin)	0.48	1	2

Source1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2: 1 x USB 3.2 Gen 1 header and 1 x USB 2.0/1.1 header. Section 2-7 items 9 and 10: each header serves two ports through an optional bracket. No front USB-C header and no USB power output is stated.

BMSI B860M GAMING PLUS WIFI

Header	Max data rate (Gbps)	Headers	Front ports served
USB-C header	10	1	1
USB 3 header (19-pin)	5	2	4
USB 2.0 header (9-pin)	0.48	2	4

Source1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, Internal USB Connectors: 1x USB 10Gbps Type-C front panel port (JUSBC1), 2x USB 5Gbps connectors that support four more ports, and 2x USB 2.0 connectors that support four more ports. The Thunderbolt 5 expansion card connector (JTBT5_1) is not a USB header.

Front USB-C header speed

Not available

10Gbps=CalculatedFrom Internal USB headers

Fan headersiAll fan and pump headers on the board, including CPU, CPU optional, AIO pump and chassis fan headers. Combination connectors that carry fan power together with other lines, such as MSI EZ Conn, do not count. A header that drives several fans, such as GIGABYTE 3_FANS, counts once. Headers on a hub that ships with the board and plugs into it, such as MSI's EZ CONTROL HUB, count. The source note splits board and hub.

21Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2 Internal Connectors: 1 x CPU fan header and 1 x system fan header, both 4-pin.

51Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, Fan Connectors: 1 CPU fan, 1 water-pump or system fan and 3 system fan connectors make 5. The JAF_1 EZ Conn-Header V1 carries fan and ARGB lines together and is not counted.

ARGB headersi3-pin 5 V addressable RGB headers. Combination connectors do not count. Headers on a hub that ships with the board and plugs into it, such as MSI's EZ CONTROL HUB, count. The source note splits board and hub.

01Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026The complete internal connector list has no ARGB header.

21Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, LED Features: 2x 3-pin A-RAINBOW V2 (ARGB Gen2) LED connectors. JAF_1 is a combination connector and is not counted.

RGB headersi4-pin 12 V RGB headers. Headers on a hub that ships with the board and plugs into it, such as MSI's EZ CONTROL HUB, count. The source note splits board and hub.

01Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026The complete internal connector list has no RGB header.

11Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, LED Features: 1x 4-pin RGB LED connector.

Networking

8 of 9 differ

Ethernet controllersiOne item per Ethernet chip, as maker plus chip family without suffix letters, e.g. Realtek RTL8126 or Realtek RTL8125. Suffixes and revisions go in the source note. Leave it empty when no maker document or review names the chip. A Killer chip is written with Intel as its maker, such as Intel Killer E3100G.

Not available

Intel Killer E50001Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications: 1x Intel Killer E5000-CG 5Gbps LAN controller. Stored as the chip family without the suffix.2Maker product pageit-store.msi.com/products/b860m-gaming-plus-wifi-shede-madriRead 15 October 2026Specifications: Intel Killer E5000 5Gbps LAN.5Retailer pageoffice-partner.de/msi-b860m-gaming-plus-wifi-n2008219103Read 15 October 2026LAN chip: Intel Killer E5000-CG, 5 Gigabit Ethernet.

Ethernet ports

1=CalculatedFrom Rear ports

1=CalculatedFrom Rear ports

Ethernet speediFastest Ethernet port.

1Gbps=CalculatedFrom Rear ports

5Gbps=CalculatedFrom Rear ports

Wi-Fi includediA Wi-Fi module comes installed. A board sold with and without Wi-Fi is two products.

No1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026The Specifications list has no Wireless section and the back panel list has no antenna connectors. The newer B550M K WIFI6E is a separate model.

Yes1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications: the Wi-Fi 7 wireless module is pre-installed in the M.2 (Key-E) slot.

Wi-Fi standard

Not available

Wi-Fi 71Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications: Wi-Fi 7, 802.11 a/b/g/n/ac/ax/be.

Wi-Fi bandsiBands the installed module supports.

Not available

2.4 GHz, 5 GHz, 6 GHz1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications: 2.4GHz, 5GHz and 6GHz bands. 6GHz depends on each country's regulations.

Max Wi-Fi channel widthiWidest channel the installed module supports, e.g. 320 or 160. It follows the Wi-Fi module, so a board revision can change it.

Not available

320MHz1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications: 2.4GHz, 5GHz and 6GHz (320MHz) up to 5.8Gbps.

Wi-Fi moduleiChip as published. A board revision can change the chip. One name: the maker's when published, otherwise the one name a review uses. No parentheses. Other names go in the source note. Use the chip's part number with its maker when any source gives it, such as Qualcomm QCNCM865 for a module also written NCM865. A platform name such as FastConnect 7800 is used only when no part number is published.

Not available

Intel Killer BE1750x2Maker product pageit-store.msi.com/products/b860m-gaming-plus-wifi-shede-madriRead 15 October 2026Wireless section: Intel Killer BE1750x Wi-Fi 7, pre-installed in the M.2 (Key-E) slot. A retailer writes it as Killer BE1750K. MSI's wording is stored.

BluetoothiVersion of the Bluetooth radio on the Wi-Fi module.

Not available

5.41Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications: Bluetooth 5.4. MSI says the version may be updated by the Wi-Fi chip vendor.

Audio

1 of 2 differ

Audio codeciMaker and model, e.g. Realtek ALC4080. A board revision can change the codec.

Not available

Realtek ALC8971Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications: Realtek ALC897 Codec, 7.1-channel High Definition Audio.

DAC chipiA separate DAC chip next to the codec, e.g. ESS ES9219. Maker plus part number as the maker writes it, with suffix letters, e.g. ESS ES9219Q. A marketing name that stands for a part number is written as the part number, so ESS SABRE9219 is ESS ES9219 and the maker wording goes in the source note. Leave it empty on boards with only a codec.

Not available

Not available

Features

3 of 7 differ

BIOS flashbackiA button that updates the BIOS from a USB drive without a CPU or memory installed. Maker names include BIOS FlashBack, Flash BIOS Button and Q-Flash Plus.

No1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026The back panel list has no button. Q-Flash is a BIOS utility and needs a CPU and memory.

No1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026The back panel list has no Flash BIOS button. The BIOS chapter describes updating with M-FLASH from inside the BIOS only.

Clear CMOS button (rear)iA button on the rear panel that resets the BIOS settings. A jumper or header does not count. A board whose only clear CMOS button sits on the board itself is false.

No1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-7 item 13 is the CLR_CMOS jumper. The back panel list has no button.

Yes1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Back panel list: 1x Clear CMOS Button.

POST code displayiA two-digit display that shows boot codes, e.g. ASUS Q-Code or ASRock Dr. Debug. Single status LEDs do not count. Taken from the maker's spec or manual only. A review spec table is not enough.

No1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026The specifications and connector list name no two-digit display.

No1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026LED Features and the Onboard LEDs chapter: 4x EZ Debug LED, which are single status LEDs for CPU, DRAM, GPU and boot device. No two-digit code display is listed.

Power button on the boardiA power or start button on the board itself, for use outside a case. A button with another label counts when the maker says it can turn the PC on, such as GIGABYTE's quick button labelled RESET. A button on the rear I/O panel counts. A button on a module that ships fitted to the board, such as MSI's EZ BRIDGE, counts.

No1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026The internal connector list and the section 1-1 layout name no power or start button on the board.

No1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026The Overview of Components chapter lists no power or start button on the board.

Dual BIOSiTwo BIOS chips, so the board can start from the second chip after a failed update. Two flash chips alone do not count.

No1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-2: BIOS is 1 x 128 Mbit flash with a licensed AMI UEFI BIOS. Dual BIOS is not named.

No1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Specifications, BIOS Features: 1x 256 Mb flash. No second BIOS is listed.

Pre-installed I/O shieldiThe rear I/O shield is fixed to the board.

Not available

Yes1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Special Features, EZ DIY: Pre-installed I/O Shield.

Tool-free featuresiM.2 latch holds a drive without a screw. M.2 heatsink comes off without a tool. PCIe slot release is a button or lever that frees the graphics card. Push-on antenna connector fits the Wi-Fi antenna without screwing.

Tool-free M.2 latch1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 2-7 item 6: pull the clip's tab out of the mounting hole, slide the M.2 SSD in, press it down and press the clip's tab into the mounting hole. No screw is used.

Tool-free M.2 latch, Tool-free M.2 heatsink, PCIe slot release, Push-on antenna connector1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Special Features, EZ DIY: EZ M.2 Shield Frozr II (the M.2 chapter shows a screwless heatsink released with a button), EZ M.2 Clip II and EZ PCIe Clip II. The Akiba PC Hotline review describes the large lock lever of the graphics card slot and an EZ Antenna that is fixed by pushing it in.2Maker product pageit-store.msi.com/products/b860m-gaming-plus-wifi-shede-madriRead 15 October 2026EZ DIY: EZ M.2 Shield Frozr II, EZ M.2 Clip II, EZ PCIe Clip II and EZ Antenna.3Reviewakiba-pc.watch.impress.co.jp/docs/topic/special/2034759.htmlRead 15 October 2026The captions name the tool-free M.2 Shield Frozr II, the EZ M.2 Clip II and an EZ Antenna that is fixed by pushing it in. The Steel Armor graphics card slot has a large lock lever that is easy to operate.

Measured

1 of 3 differ

VRM temperature under CPU loadiHighest VRM temperature a reviewer measured during a sustained all-core CPU stress test at stock settings. Compare only results from the same reviewer and CPU. The reviewer's probe reading when given, otherwise the board sensor. The sensor and the CPU package power during the test go in the source note.

Not available

74°C3Reviewakiba-pc.watch.impress.co.jp/docs/topic/special/2034759.htmlRead 15 October 2026Cinebench 2024 Multi Core run for at least 10 minutes with a Core Ultra 7 265K at the BIOS default limits (PL1 = PL2 = 250 W, IccMax 347 A), open frame at about 26 C, MAG CORELIQUID A13 360 with the fans at 50 percent PWM. HWiNFO64 Pro reads the VRM MOS sensor at an average of 64.1 C and a maximum of 74 C. The CPU drew a little under 200 W. A thermal image after 10 minutes agrees with the sensor. The maximum is stored. Gaming load (Cyberpunk 2077 for 30 minutes) peaked at 45 C.

Power draw idleiWhole test system at the wall at idle, measured by a reviewer. Compare only results from the same reviewer and CPU. A chart of CPU and board power without a wall meter does not count.

Not available

Not available

Power draw CPU stressiWhole test system at the wall at the peak of a CPU stress test, measured by a reviewer. The graphics card is not loaded. Compare only results from the same reviewer and CPU. A chart of CPU and board power without a wall meter does not count.

Not available

Not available

In the box

1 of 1 differ

In the boxiItems as the maker lists them.

SATA cable, User's Manual, I/O Shield1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026Section 1-2 box contents: B550M K motherboard, User's Manual, One SATA cable, I/O Shield, for reference only. The Rev. 1102 manual lists Two SATA cables, so the SATA cable count is not stored.2Owner's manualregard.ru/api/site/files/goodspdf/download/30802Read 15 October 2026Section 1-2: B550M K WIFI6E or B550M K motherboard, User's Manual, I/O Shield, Two SATA cables and One antenna (WIFI6E only). The older Rev. 1001 manual says One SATA cable.

Quick installation guide, European Union regulatory notices, 1 x SATA cable, 1 to 2 EZ Conn-Cable (V1), EZ Wi-Fi Antenna, EZ M.2 Clip II, EZ M.2 Clip II Remover, 2 x M.2 Screw and Standoff Sets1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026Package Contents: motherboard, 1 quick installation guide, 1 European Union regulatory notices, 1 SATA cable, 1 1 to 2 EZ Conn-Cable (V1), 1 EZ Wi-Fi antenna, 1 EZ M.2 Clip II, 1 EZ M.2 Clip II Remover and 2 M.2 screw and standoff sets.

Links

Not compared

Product page

www.gigabyte.com/Motherboard/B550M-K-rev-103Maker product pagegigabyte.com/Motherboard/B550M-K-rev-10/spRead 15 October 2026GIGABYTE product page for B550M K rev. 1.0. Revisions 1.1 and 1.2 have their own pages with the same name.

www.msi.com/Motherboard/B860M-GAMING-PLUS-WIFI7Maker product pagemsi.com/Motherboard/B860M-GAMING-PLUS-WIFIRead 15 October 2026The link appears in web search results for this model. msi.com blocks agents, so the page was not read and no value comes from it.

Spec sheet

www.gigabyte.com/Motherboard/B550M-K-rev-10/sp3Maker product pagegigabyte.com/Motherboard/B550M-K-rev-10/spRead 15 October 2026The /sp page is GIGABYTE's specification page. It was read through a web search excerpt only.

Not available

Manual

www.trovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdf1Owner's manualtrovaprezzi.it/manuali/gigabyte_b550m_k_1_0.pdfRead 15 October 2026GIGABYTE B550M K User's Manual Rev. 1001, copyright 2023, 29 pages, hosted by trovaprezzi.it. It is the manual for rev. 1.0. A newer GIGABYTE manual, Rev. 1102 from 2026, covers B550M K and B550M K WIFI6E and is listed below.

www.trovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdf1Owner's manualtrovaprezzi.it/manuali/msi_b860m_gaming_plus_wifi.pdfRead 15 October 2026MSI B860M GAMING PLUS WIFI User Guide in English, hosted by trovaprezzi.it. The PDF was created on 2025-01-14. The maker's own manual page was not readable.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

0 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

3years4Retailer pageik.imagekit.io/pimberly/65707b38e31f5a94719d7ba0/4a6bea2c/66f2e2428f76e40019820f68/product-pdfRead 15 October 2026The data sheet from a European distributor feed gives Warranty period 3 year(s). The market is Europe. Amazon US says 3 Years Manufacturer.5Retailer pageamazon.com/dp/B0BTTZFQTPRead 15 October 2026Warranty Description: 3 Years Manufacturer, on the US page.7Spec databasegeizhals.at/gigabyte-b550m-k-a2901610.htmlRead 15 October 2026Garantie row: 3 Jahre. The market is Austria.

3years5Retailer pageoffice-partner.de/msi-b860m-gaming-plus-wifi-n2008219103Read 15 October 2026Garantie: 3 Jahre Herstellergarantie (Germany).

Both are also in the API. Back to all motherboards.