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GIGABYTE B550M K vs GIGABYTE B850M GAMING X WIFI6E

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Product A: GIGABYTE

B550M K

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B

Product B: GIGABYTE

B850M GAMING X WIFI6E

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Only differences

AGIGABYTE B550M K

BGIGABYTE B850M GAMING X WIFI6E

General

2 of 9 differ

Series

Not available

GAMING X8Retailer pageesaitech.com/products/gigabyte-ultra-durable-b850m-gaming-x-wifi6e-gaming-desktop-motherboardRead 14 October 2026The board is named B850M GAMING X WIFI6E on the manual cover. GAMING X is GIGABYTE's name for this line, below AORUS.

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.

B850M GAMING X WIFI6E, B850M GAMING X WF6E1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Manual cover: B850M GAMING X WIFI6E (B850M GAMING X WF6E).3Retailer pagescan.co.uk/products/gigabyte-b850m-gaming-x-wifi6eRead 14 October 2026Manufacturer code B850M GAMING X WIFI6E.6Retailer pageparadigit.ie/gigabyte-b850m-gaming-x-wifi6e/21754816/productRead 14 October 2026Manufacturer product number B850M GAMING X WF6E.

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.

47193318664333Retailer pagescan.co.uk/products/gigabyte-b850m-gaming-x-wifi6eRead 14 October 2026GTIN 4719331866433. Gigante's barcode and OnBuy's EAN carry the same number.5Retailer pagegigante.co.uk/products/gigabyte-b850m-gaming-x-wifi6e-amd-am5-socket-motherboard-micro-atx-4x-ddr5-slots-2x-m-2-sockets-2x-usb-c-port-fitted-i-o-shield-2-5gbe-lan-wi-fi-6e-2x-displayports-1x-hdmi-portRead 14 October 2026Barcode 4719331866433 on the Shopify variant for SKU B850M GAMING X WIFI6E.

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

Not available

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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.

Available3Retailer pagescan.co.uk/products/gigabyte-b850m-gaming-x-wifi6eRead 14 October 2026In stock with a delivery estimate on 2026-10-14. Listed at 153.98 GBP including VAT.

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

Not available

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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

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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.

Gaming8Retailer pageesaitech.com/products/gigabyte-ultra-durable-b850m-gaming-x-wifi6e-gaming-desktop-motherboardRead 14 October 2026The listing calls it a Gaming Desktop Motherboard, and the retail box in Gigante's photos reads GIGABYTE Gaming Motherboard. The maker names no creator or workstation use.

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

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Platform

3 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.

AM51Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026

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.

AMD B8501Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026

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.

AMD Ryzen 9000 Series, AMD Ryzen 8000 Series, AMD Ryzen 7000 Series1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: Ryzen 9000, 8000 and 7000 Series. The manual refers to the maker's website for the latest CPU support list. Read on 2026-10-14.

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.

Yes9Maker product pageamd.com/en/products/processors/chipsets/am5.htmlRead 14 October 2026AMD's AM5 chipset table lists Ryzen processor overclocking as enabled for B850, as read through a search summary because the page timed out when opened directly. This is the chip maker's page, not the board maker's. The board maker's manual does not state CPU overclocking.

Board

2 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/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: Micro ATX Form Factor, 24.4cm x 24.4cm.

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/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: 24.4cm x 24.4cm.3Retailer pagescan.co.uk/products/gigabyte-b850m-gaming-x-wifi6eRead 14 October 2026Micro ATX, 244 x 244 mm.

PCB layersiCopper layers in the circuit board as published.

Not available

63Retailer pagescan.co.uk/products/gigabyte-b850m-gaming-x-wifi6eRead 14 October 2026The listing reproduces the maker's feature list: 6-layer copper PCB and mid-loss PCB. The Brazilian shop Kabum also lists 6-layer PCBs for this board.

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/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026The section 1-1 layout shows the usual front-side power, fan and USB connectors. The board is not a back-connect design.

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.

Not available

Power delivery

3 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.

10+2+23Retailer pagescan.co.uk/products/gigabyte-b850m-gaming-x-wifi6eRead 14 October 2026Reproduces the maker's text: Digital Twin Power design with 10 VCORE, 2 SOC and 2 VDD_MISC phases.4Retailer pagejib.co.th/web/product/readProduct/87537/42/MAINBOARD--%E0%B9%80%E0%B8%A1%E0%B8%99%E0%B8%9A%E0%B8%AD%E0%B8%A3%E0%B9%8C%E0%B8%94--GIGABYTE-B850M-GAMING-X-WIFI6E--REV-1-1----AMD-SOCKET-AM5-DDR5-MICRO-ATXRead 14 October 2026Digital Twin VRM with 10+2+2 phases and VRM Thermal Armor Advanced.

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

103Retailer pagescan.co.uk/products/gigabyte-b850m-gaming-x-wifi6eRead 14 October 202610 VCORE phases. MaxMyBuild writes the phase config as 2x5+2+2, which is 10 Vcore stages.

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

60A3Retailer pagescan.co.uk/products/gigabyte-b850m-gaming-x-wifi6eRead 14 October 2026The listing says 60A DrMOS modules, copied from the maker's text. MaxMyBuild reads 55A DrMOS. The maker's 60A is stored.

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.

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Not available

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 pin1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: 1 x 24-pin ATX main power connector and 1 x 8-pin ATX 12V power 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.

No1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026The section 2-2 internal connector list has no extra slot power connector.

Memory

4 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/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: 4 x DDR5 DIMM sockets, dual channel.

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/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026

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/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: up to 256 GB (64 GB single DIMM capacity).

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.

8,200MT/s3Retailer pagescan.co.uk/products/gigabyte-b850m-gaming-x-wifi6eRead 14 October 2026Rated for 8200 MT/s overclocking with AMD EXPO support. The listing names no CPU family. The manual lists only 5200, 4800 and 4400 MT/s.

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/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules.

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

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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.

BGIGABYTE B850M GAMING X WIFI6E

Physical slot	Electrical lanes	PCIe generation	Connected to	Count
PCIe x16	16	5	CPU	1
PCIe x16	4	3	Chipset	1

Source1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: PCIEX16 is in the CPU, PCIe 5.0 x16 with Ryzen 9000 and 7000, PCIe 4.0 x8 with Ryzen 8000 Phoenix 1 and PCIe 4.0 x4 with Phoenix 2. The chipset slot PCIEX4 is a full-length x16 slot that supports PCIe 3.0 and runs at x4. The PCIEX16 slot takes only a graphics card or an NVMe SSD.

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

1=CalculatedFrom Expansion slots

2=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

2 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.

BGIGABYTE B850M GAMING X WIFI6E

Slot	PCIe generation	PCIe lanes	Connected to	Longest drive	Takes SATA drives	Heatsink
M2A_CPU	5	4	CPU	M.2 22110	No	Yes
M2B_CPU	4	4	CPU	M.2 22110	No	No

Source1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2 and the M.2 pages: M2A_CPU takes M key 25110/22110/2580/2280 at PCIe 5.0 x4/x2 with Ryzen 9000 and 7000 (PCIe 4.0 with Ryzen 8000). M2B_CPU takes 25110/22110/2580/2280 at PCIe 4.0 x4/x2 with Ryzen 9000 and 7000, and x2 only with Ryzen 8000 Phoenix 2. Both are in the CPU. The type table marks M.2 SATA SSDs as not supported for both slots. The M2A_CPU steps remove and refit the motherboard heatsink with a thermal pad, and the M2B_CPU steps use a screw and mention no heatsink. MaxMyBuild also lists a heatsink on slot 1 only.7Spec databasemaxmybuild.com/motherboards/gigabyte-b850m-gaming-x-wifi6eRead 14 October 2026M.2 heatsinks: slot 1 only.

M.2 slots

2=CalculatedFrom M.2 storage slots

2=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/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: 4 x SATA 6Gb/s connectors from the chipset.

Rear ports

3 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.

BGIGABYTE B850M GAMING X WIFI6E

Type	Version	Count	Max link rate (Gbps)
USB-C	USB 3.2 Gen 2	1	10
USB-A	USB 3.2 Gen 2	1	10
USB-A	USB 3.2 Gen 1	2	5
USB-A	USB 2.0	4	0.48
HDMI	HDMI 2.1	1	Not available
DisplayPort	DisplayPort 1.4	2	Not available
Ethernet (RJ45)	Not available	1	2.5
3.5 mm audio	Not available	3	Not available
PS/2	Not available	1	Not available

Source1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2 back panel: 1 x HDMI, 2 x DisplayPorts, 1 x PS/2 port, 1 x USB 3.2 Gen 2 Type-A (red), 1 x USB Type-C with USB 3.2 Gen 2, 2 x USB 3.2 Gen 1, 4 x USB 2.0/1.1, 1 x RJ-45, 3 audio jacks, and 2 antenna connectors and the Q-Flash Plus button, which are not ports. HDMI supports version 2.1, 4096x2160@60 Hz. The DisplayPorts are version 1.4, up to 3840x2160@144 Hz. Video needs a CPU with integrated graphics. The manual gives no USB power output or DisplayPort alt mode figures.

Rear USB ports

8=CalculatedFrom Rear ports

8=CalculatedFrom Rear ports

Rear USB-C portsiIncludes Thunderbolt and USB4 ports.

0=CalculatedFrom Rear ports

1=CalculatedFrom Rear ports

Fastest rear USB port

5Gbps=CalculatedFrom Rear ports

10Gbps=CalculatedFrom Rear ports

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

Not available

Not available

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.

BGIGABYTE B850M GAMING X WIFI6E

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

Source1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: 1 x USB Type-C header with USB 3.2 Gen 2, 1 x USB 3.2 Gen 1 header (2 ports) and 2 x USB 2.0/1.1 headers (4 ports).

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.

41Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: 1 x CPU fan header, 1 x CPU fan/water cooling pump header, 1 x system fan header and 1 x system fan/water cooling pump header.

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.

31Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: 3 x addressable RGB Gen2 LED strip headers.

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/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: 1 x RGB LED strip header.

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

Realtek RTL81257Spec databasemaxmybuild.com/motherboards/gigabyte-b850m-gaming-x-wifi6eRead 14 October 2026Lists a Realtek RTL8125D 2.5 GbE controller. The suffix D is left out. The manual says only Realtek 2.5GbE LAN chip. Single source.

Ethernet ports

1=CalculatedFrom Rear ports

1=CalculatedFrom Rear ports

Ethernet speediFastest Ethernet port.

1Gbps=CalculatedFrom Rear ports

2.5Gbps=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/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: the wireless communication module is for the B850M GAMING X WIFI6E only.

Wi-Fi standard

Not available

Wi-Fi 6E1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: Realtek Wi-Fi 6E RTL8852CE, WIFI a, b, g, n, ac, ax.

Wi-Fi bandsiBands the installed module supports.

Not available

2.4 GHz, 5 GHz, 6 GHz1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: 2.4/5/6 GHz carrier frequency bands.

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

160MHz1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: support for 11ax 160MHz wireless standard.

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

Realtek RTL8852CE1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: Realtek Wi-Fi 6E RTL8852CE. JIB's listing of the rev. 1.1 board names the same chip.4Retailer pagejib.co.th/web/product/readProduct/87537/42/MAINBOARD--%E0%B9%80%E0%B8%A1%E0%B8%99%E0%B8%9A%E0%B8%AD%E0%B8%A3%E0%B9%8C%E0%B8%94--GIGABYTE-B850M-GAMING-X-WIFI6E--REV-1-1----AMD-SOCKET-AM5-DDR5-MICRO-ATXRead 14 October 2026Realtek RTL8852CE, Wi-Fi 6E, Bluetooth 5.3, 160 MHz.

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

Not available

5.31Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: BLUETOOTH 5.3.

Audio

1 of 2 differ

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

Not available

Realtek ALC8976Retailer pageparadigit.ie/gigabyte-b850m-gaming-x-wifi6e/21754816/productRead 14 October 2026Specifications: audio chip Realtek ALC897, 7.1-channel. The manual names only a Realtek audio CODEC and links GIGABYTE's realtek897 audio software page.7Spec databasemaxmybuild.com/motherboards/gigabyte-b850m-gaming-x-wifi6eRead 14 October 2026Lists the audio codec ALC897.

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

4 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.

Yes1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2 and 2-6: Q-Flash Plus button on the back panel.

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.

No1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2 lists a Clear CMOS jumper, and the back panel list has only the Q-Flash Plus 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/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-7: status LEDs for CPU, DRAM, VGA and boot. The manual lists no two-digit display.

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.

Not available

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/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-2: BIOS is 1 x 256 Mbit flash. Dual BIOS is not stated.

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

Not available

Yes5Retailer pagegigante.co.uk/products/gigabyte-b850m-gaming-x-wifi6e-amd-am5-socket-motherboard-micro-atx-4x-ddr5-slots-2x-m-2-sockets-2x-usb-c-port-fitted-i-o-shield-2-5gbe-lan-wi-fi-6e-2x-displayports-1x-hdmi-portRead 14 October 2026The listing title says Fitted I/O Shield. The manual's box contents list a loose I/O shield only for the B850M DS3H, not for this board.

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/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 2-5 and 2-8, items marked only for B850M GAMING X WIFI6E: PCIe EZ-Latch Plus (slot release), M.2 EZ-Latch Plus (M.2 drive clip) and M.2 EZ-Latch Click (turn the clip to remove the M2A_CPU heatsink). antenna_connector comes from the retailer copy of the maker's feature list, WIFI EZ-Plug, see the JIB source. The manual only says to connect the antenna securely.4Retailer pagejib.co.th/web/product/readProduct/87537/42/MAINBOARD--%E0%B9%80%E0%B8%A1%E0%B8%99%E0%B8%9A%E0%B8%AD%E0%B8%A3%E0%B9%8C%E0%B8%94--GIGABYTE-B850M-GAMING-X-WIFI6E--REV-1-1----AMD-SOCKET-AM5-DDR5-MICRO-ATXRead 14 October 2026The listing copies the maker's feature list: EZ-Latch Click (tool-free M.2 heatsink), EZ-Latch Plus (tool-free release for PCIe and M.2) and a WIFI EZ-Plug design for the two antenna connectors. WIFI EZ-Plug is read as a push-on antenna connector. This is a doubt, since the manual does not describe it.

Measured

None of 3 known

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

Not available

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.

Motherboard, User's Manual, Quick Installation Guide, One antenna, Two SATA cables, One G Connector, M.2 screw(s), One pack of M.2 thick/thin rubber pads1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026Section 1-2, items for the B850M GAMING X WIFI6E. The manual also lists an I/O shield, marked only for the B850M DS3H, which is not stored. The manual says the box contents are for reference only.

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.gigabyte.com/us/Motherboard/B850M-GAMING-X-WIFI6E-rev-102Maker product pagegigabyte.com/us/Motherboard/B850M-GAMING-X-WIFI6E-rev-10Read 14 October 2026The maker's product page for rev. 1.0. gigabyte.com blocks agents, so the page content was not read. The link comes from the job's evidence. The manual and retailer copies of the maker's text supply the specifications.

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/gigabyte_b850m_gaming_x_wifi6e.pdf1Owner's manualtrovaprezzi.it/manuali/gigabyte_b850m_gaming_x_wifi6e.pdfRead 14 October 2026GIGABYTE user's manual Rev. 1002 for the B850M GAMING X WIFI6E (short name B850M GAMING X WF6E) and the B850M DS3H, 40 pages, copyright 2024. Hosted by trovaprezzi.it since gigabyte.com blocks agents. Items marked only for B850M GAMING X WIFI6E are used here and DS3H items are not.

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.

3years3Retailer pagescan.co.uk/products/gigabyte-b850m-gaming-x-wifi6eRead 14 October 202636 months return to base in the UK. JIB in Thailand says 3 years too. Some shops in the Philippines mention 5 years, so the term differs by market.4Retailer pagejib.co.th/web/product/readProduct/87537/42/MAINBOARD--%E0%B9%80%E0%B8%A1%E0%B8%99%E0%B8%9A%E0%B8%AD%E0%B8%A3%E0%B9%8C%E0%B8%94--GIGABYTE-B850M-GAMING-X-WIFI6E--REV-1-1----AMD-SOCKET-AM5-DDR5-MICRO-ATXRead 14 October 2026Warranty 3 years.

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