Power supplies / Compare

CORSAIR CX750M ATX 3.1 vs Thermaltake Smart 500W

A

Product A: CORSAIR

CX750M ATX 3.1

50 of 66 known

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B

Product B: Thermaltake

Smart 500W

31 of 66 known

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Only differences

ACORSAIR CX750M ATX 3.1

BThermaltake Smart 500W

General

6 of 12 differ

Series

CX-M1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026CX-M Series. The manual calls it CX-M Series (3rd GEN). The older CX750M (CP-9020222) is a different product.

Smart1Maker product pagethermaltakeusa.com/smart-500w.htmlRead 14 October 2026Page title: Smart SPD-0500P, 500W 80 PLUS Standard Certified APFC PSU. The page is Thermaltake USA.

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

CP-9020311-NA1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026SKU CP-9020311-NA. The power table prints MODEL RPS0229 and PART NO. 75-006838.

PS-SPD-0500NPCWUS-W, PS-SPD-0500NPCW-W1Maker product pagethermaltakeusa.com/smart-500w.htmlRead 14 October 2026SKU and P/N PS-SPD-0500NPCWUS-W. The global Thermaltake pages list PS-SPD-0500NPCW-W for the same Smart 500W without the US suffix.5Retailer pageamazon.com/dp/B014W3EM2WRead 14 October 2026Item details: Model Number and Mfr Part Number PS-SPD-0500NPCWUS-W. The description text names P/N ps-spd-0500npcw-w and short model sp-500ah2nkw.

GTIN / EAN

8404404969774Retailer pageglobal.channelonline.com/acme/classic/Products/overview/M026321896Read 15 October 2026Channel Online lists UPC 0840440496977 for part CP-9020311-NA, CX-M Series CX750M, North America. It is the 12-digit UPC 840440496977 with a leading zero.

841163062234, 7807466404175Retailer pageamazon.com/dp/B014W3EM2WRead 14 October 2026Item details: UPC 780746640417 and 841163062234, GTIN 00841163062234. Both codes have a valid check digit. BuildCores lists the same two codes. Which code is on which box is not known.6Spec databasebuildcores.com/products/PSU/zz1k9f9yv/Thermaltake-Smart-Certified-ATX-500W-Non-Modular-80%2BRead 14 October 2026BuildCores lists UPC 780746640417 and EAN 0841163062234 for part number PS-SPD-0500NPCWUS-W.

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

Not available

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Status

Available1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026In Stock and Best Seller on the Corsair US store at $99.99. Not stored as a launch price.

Available5Retailer pageamazon.com/dp/B014W3EM2WRead 14 October 2026Amazon US listing for PS-SPD-0500NPCWUS-W sold by Thermaltake USA Direct. 11,077 ratings and best sellers rank 4 in Computer Power Supplies in October 2026. The Thermaltake USA store shows it sold out.

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

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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

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ColoursiThe maker's own colour names

Not available

Black1Maker product pagethermaltakeusa.com/smart-500w.htmlRead 14 October 2026Product Specifications: Color Black.

Form factoriThe physical size standard that decides what fits in the case. An ATX unit is 150 × 86 mm at the back. An SFX unit is 125 × 63.5 mm.

ATX1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Tech Specs: PSU Form Factor ATX.

ATX1Maker product pagethermaltakeusa.com/smart-500w.htmlRead 14 October 2026Product Specifications: Form Factor ATX.

ATX versioniThe ATX12V design guide revision the maker claims compliance with. A 16-pin GPU cable alone does not establish ATX 3.x. A Cybenetics report that withholds its ATX badge does not change the maker's claim. It goes in the source note.

ATX 3.11Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Tech Specs: ATX12V Version v3.1, EPS12V Version 2.92. The headline says ATX 3.1 and PCIe 5.1.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-cxm-2025Read 15 October 2026Intro: CX-M Series power supplies are ATX 3.1 compliant and PCIe 5.1 ready.

ATX 2.x1Maker product pagethermaltakeusa.com/smart-500w.htmlRead 14 October 2026Product Specifications: Type Intel ATX 12V 2.3. Amazon's listing adds EPS 12V 2.92.

PCIe CEM versioniThe PCI Express card power revision the maker claims, as printed next to the ATX version. It sets the GPU power connector rules. It is not a slot speed. A reviewer's statement is not enough.

PCIe 5.11Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Headline and feature text: ATX 3.1 and PCIe 5.1, native 12V-2x6 GPU power cable.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-cxm-2025Read 15 October 2026Intro: PCIe 5.1 ready with a 12V-2x6 cable.

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Modular cablesiFull means every cable detaches. Semi means some cables are fixed, usually the 24-pin and CPU cables.

Semi-modular1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Tech Specs: Modular Semi. The power cable listing marks the 24-pin, CPU and one 8-pin PCIe cable as fixed.3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026DUT Information: Cable Design Semi Modular.

None5Retailer pageamazon.com/dp/B014W3EM2WRead 14 October 2026Item details name the product Smart 500W ATX 12V APFC 80+ Non-modular. BuildCores also lists Non-Modular.6Spec databasebuildcores.com/products/PSU/zz1k9f9yv/Thermaltake-Smart-Certified-ATX-500W-Non-Modular-80%2BRead 14 October 2026Modularity Non-Modular.

Built by (OEM)iThe company that designed and built the unit for the brand, such as CWT or FSP. As named by the maker, a teardown review or a Cybenetics report.

HEC3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026DUT Information and Parts Description: OEM/ODM HEC.

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Power

5 of 9 differ

Rated continuous poweriThe continuous DC output the maker rates the unit for, such as 850. Peak or power excursion figures are not stored here.

750W1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Tech Specs: Continuous Power W 750 Watts. The power table prints TOTAL POWER 750W.

500W1Maker product pagethermaltakeusa.com/smart-500w.htmlRead 14 October 2026Continuous Power 500W.

Full power rated up toiThe ambient temperature up to which the maker rates full continuous power, such as 50 °C. A review table that prints 0-50 °C with no maker source is not enough. An operating temperature range that does not say full power is not enough. A maker table with load steps gives the full-load row, such as 40 °C at full load next to 50 °C at 80 percent load. A temperature that a Cybenetics report marks as manufacturer-provided counts as a maker statement.

40°C1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Tech Specs: Continuous Output Rated Temp C 40°C.

40°C5Retailer pageamazon.com/dp/B014W3EM2WRead 14 October 2026Feature bullet: delivers 500 Watt continuous output at plus 40 degree. The maker manual gives an operating temperature of +5 C to +40 C.

12V rail designiHow the maker splits +12V over-current protection. Switchable means the user picks single or multi rail with a switch or in software.

Single rail3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Power Specifications lists one +12V rail at 62.5 A. The 12V OCP test tripped at 75.80 A (121.28 percent of 62.5 A) at 30 °C, so one over-current limit covers the full rated +12V current. No source uses the words single rail.

Single rail1Maker product pagethermaltakeusa.com/smart-500w.htmlRead 14 October 2026Page text: Single +12V rail design.

+12V max currentiHighest combined current on +12V from the maker's power table. For a multi-rail unit this is the combined total, not one rail.

62.5A1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026CX750M power table: +12V 62.5A, 750W.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-cxm-2025Read 15 October 2026CX750M power table, model RPS0229, part no. 75-006838: +12V 62.5A 750W.

41.67A2Owner's manualfile.thermaltake.com/file/qig/SMART500.600.700W_US_manual.pdfRead 14 October 2026Output Specification, 500W row: +12V max output current 41.67A. The US product page prints 58.3A for +12V, which does not fit its own 499.2W figure (58.3 A at 12 V is 700 W). The global Thermaltake page prints 35A and 420W for P/N PS-SPD-0500NPCW-W. The manual is stored, since it is the consistent set.

+12V max poweriHighest combined power on +12V from the maker's power table.

750W1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026CX750M power table: +12V 62.5A, 750W.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-cxm-2025Read 15 October 2026CX750M power table: +12V 750W.

500W2Owner's manualfile.thermaltake.com/file/qig/SMART500.600.700W_US_manual.pdfRead 14 October 2026Output Specification, 500W row: +12V max output power 500W, continuous power 500W.

+3.3V and +5V combined poweriThe combined limit for the +3.3V and +5V rails from the maker's power table. A table that prints the same figure under both rails, as be quiet! does, shows one shared limit, so the figure is stored once and not added.

130W1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026CX750M power table: +3.3V 20A and +5V 20A share one 130W maximum output cell.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-cxm-2025Read 15 October 2026CX750M power table: +3.3V 20A 130W and +5V 20A under one 130W cell.

105W2Owner's manualfile.thermaltake.com/file/qig/SMART500.600.700W_US_manual.pdfRead 14 October 2026Output Specification, 500W row: +3.3V 16A and +5V 16A with one 105W cell. The US product page prints 18A each and 100W.

+5V standby currentiHighest current on the +5VSB standby rail. It powers USB charging and wake functions while the PC is off.

3A1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026CX750M power table: +5VSB 3A, 15W.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-cxm-2025Read 15 October 2026CX750M power table: +5Vsb 3A 15W.

3A2Owner's manualfile.thermaltake.com/file/qig/SMART500.600.700W_US_manual.pdfRead 14 October 2026Output Specification, 500W row: +5VSB 3A, 15W. The US product page prints 2.5A and 12.5W.

AC input voltageiThe rated AC input range, such as 100 to 240 V.

Lowest100Highest240V1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026CX750M power table: AC input 100V-240V, input current 10A-5A, 47Hz-63Hz.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-cxm-2025Read 15 October 2026CX750M power table: 100V - 240V a.c., 10A - 5A, 47Hz - 63Hz.

Lowest100Highest240V1Maker product pagethermaltakeusa.com/smart-500w.htmlRead 14 October 2026AC input: Input Voltage 100 - 240Vac, Input Current 12A Max, Frequency 50 - 60Hz.2Owner's manualfile.thermaltake.com/file/qig/SMART500.600.700W_US_manual.pdfRead 14 October 2026500W row: input voltage 100 - 240V, input current 10A - 5A, 50Hz / 60Hz. The US product page prints 12A max.

Alternative low power mode (ALPM)iThe maker or a Cybenetics report states support for the ATX alternative low power mode used by Modern Standby.

Yes3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Temperature and Compliance Info: ALPM (Alternative Low Power Mode) compatible, checked.

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Certifications

5 of 5 differ

80 PLUS ratingiThe 80 PLUS level. When the 80 PLUS listing or certificate and the maker claim differ, store the listing level and put the claim and test voltage in the source note. When a model has several 80 PLUS entries, such as a newer test at a higher level, use the newest entry that matches the current maker documents.

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80 PLUS White1Maker product pagethermaltakeusa.com/smart-500w.htmlRead 14 October 2026Page says 80 PLUS Standard Certified, which is the base 80 PLUS level. It also prints 82-86% efficiency at 20-100% load. The 80 PLUS list entry for this model code is Standard.4Certification listclearesult.com/80plus/certified-psus/Thermaltake/SPD-0500P-SP-500AH2NKW-SMART-500W-115V-Internal-16460Read 14 October 202680 PLUS entry for SPD-0500P SP-500AH2NKW SMART 500W, ATX12V, 500 W, 115V Internal, Standard, certified 07/23/2015. Amazon's listing for PS-SPD-0500NPCWUS-W names SP-500AH2NKW as the short model. A separate 2024 entry named SMART 500W (ID 7403) is Bronze and has no model code, so it is not matched to this unit.

Cybenetics efficiency at 115ViThe Cybenetics ETA level from the 115V test. The Cybenetics report wins over the maker's claim.

Cybenetics Silver3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Report 25PS2903A, certification ID 252903, issued Jul 28, 2025, model CX750M (ATX v3.1). ETA Silver at 115V (Cybenetics database feed, id 2903). Corsair's page says Cybenetics Bronze. The report is stored.

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Cybenetics efficiency at 230ViThe Cybenetics ETA level from the 230V test. The 230V thresholds are higher, so the level can differ from the 115V level. The Cybenetics report wins over the maker's claim.

Cybenetics Silver3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026ETA Silver at 230V (Cybenetics database feed, id 2903).

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Cybenetics noise at 115ViThe Cybenetics LAMBDA level from the 115V test. A++ is the quietest. The Cybenetics report wins over the maker's claim.

Standard++3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026LAMBDA Standard++ at 115V (Cybenetics database feed, id 2903).

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Cybenetics noise at 230ViThe Cybenetics LAMBDA level from the 230V test. The Cybenetics report wins over the maker's claim.

Standard++3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026LAMBDA Standard++ at 230V (Cybenetics database feed, id 2903).

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Measured

10 of 10 differ

Average efficiency at 115V (measured)iAverage efficiency over the whole load range at 115V input, from more than 1450 load combinations in the Cybenetics method. It is not the peak efficiency or the efficiency at 50% load.

86.207%3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Average over more than 1450 load combinations at 115V. Sample serial 4583, received Jun 30, 2025, tested Jul 22, 2025. Ambient 28-32 C.

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Average efficiency at 230V (measured)iThe same average efficiency at 230V input.

88.351%3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Average over more than 1450 load combinations at 230V.

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Light-load efficiency at 115V (measured)iEfficiency at a 10 W load for units up to 500 W, or at a 2% load for larger units, at 115V input. This is the ATX light-load test.

70.945%3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Efficiency at 2% load (more than 500 W unit) at 115V.

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Average power factor at 115V (measured)iAverage power factor over the whole load range at 115V input. 1 is the best possible value.

0.9943Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Average over more than 1450 load combinations at 115V.

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Average noise at 115V (measured)iAverage noise over the whole load range at 115V input in the Cybenetics method, at about 30 °C ambient. It is not the noise at full load.

31.78dB(A)3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Average over more than 1450 load combinations at 115V. Ambient 28-32 C. Bruel and Kjaer 2270 G4 sound analyzer. The 230V average is 31.87 dBA.

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Noise at full load at 115V (measured)iNoise at 100% load at 115V input in the Cybenetics typical load tests. That row often runs at about 45 °C intake. The intake temperature and the fan speed go in the source note. Lower is better.

45.3dB(A)3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Typical load tests at 115V, 100% load row: 45.3 dB(A) at 1955 rpm fan speed, intake 45.96 C. At 230V it is 45.1 dB(A) at 1928 rpm.

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Standby power with no load at 115V (measured)iPower the unit draws from the wall with the PC off and nothing drawn from +5VSB, at 115V input.

0.0547W3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Standby power consumption at 115V with no load on +5VSB: 0.0547 W.

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Hold-up time (measured)iHow long the outputs stay in regulation after AC power is lost, at maximum continuous load, as printed in the Cybenetics report. The report names no input voltage. The AC loss to PWR_OK time goes in the source note. Higher is better.

16.8ms3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Hold-Up Time and PWR_OK Signal: hold-up time 16.8 ms, AC loss to PWR_OK 15.0 ms, PWR_OK inactive to DC loss 1.8 ms, at maximum continuous load. The report names no input voltage.

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12V ripple at full load (measured)iPeak-to-peak ripple on the +12V rail at full load and 115V input. Lower is better.

31.07mV3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Non-accredited measurement. 12V ripple at full load at 115V. At 230V it is 33.42 mV.

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12V load regulation (measured)iHow far the +12V voltage moves between light and full load at 115V input. Lower is better.

0.69%3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Non-accredited measurement. 12V load regulation at 115V. At 230V it is 0.67%.

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Cables and connectors

7 of 7 differ

CablesiOne row per kind of cable that runs from the PSU to a device. Connector is the plug at the device end. Count is the number of those plugs over all cables in the row. Length runs from the PSU end to the first plug. Adapters that plug into other cables are left out. Use 16-pin PCIe when the maker names a 16-pin GPU cable without saying 12V-2x6 or 12VHPWR. A cable from a 12V-2x6 socket on the PSU to 8-pin plugs is a cable, not an adapter, and counts as PCIe 8-pin. When the maker's documents name one GPU cable both 12VHPWR and 12V-2x6, use 16-pin PCIe and name both in the source note. Cables of one connector kind with different lengths or wire gauges get one row each.

ACORSAIR CX750M ATX 3.1

Connector	Connectors	Cables	Length to first plug (mm)	Wire gauge	Rated power (W)
ATX 24-pin (20+4)	1	1	600	18-22AWG	Not available
CPU 8-pin (EPS, 4+4)	2	1	500	16-18AWG	Not available
PCIe 8-pin (6+2)	4	2	500	16-18AWG	Not available
12V-2x6	1	1	600	16AWG	600
SATA power	6	2	400	18AWG	Not available
SATA power	2	1	350	18AWG	Not available
4-pin Molex	1	1	350	18AWG	Not available

Source1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026CX750M cable listing: ATX 24-pin fixed (600mm), dual 4+4-pin / 8-pin EPS fixed (spacing 500mm, 100mm), dual 6+2-pin PCIe fixed (500mm, 100mm), dual 6+2-pin PCIe modular (500mm, 100mm), 600W 12V-2x6 modular (600mm), 3 SATA modular and 3 SATA fixed (400mm, 100mm, 100mm), 2 SATA / 1 PATA modular (350mm, 150mm, 150mm). The first spacing value is stored as the length to the first plug. Tech Specs: SATA connector 8, PATA connector 1. Wire gauges come from the Cybenetics report. Cybenetics lists 510 mm, 595 mm and 410 mm for some of the same cables, which are not stored. The 12V-2x6 gauge is a 16-24AWG range that includes sideband wires, so the 16AWG power wire gauge is stored.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-cxm-2025Read 15 October 2026Included Cables: 1x fixed ATX 24-pin, 1x fixed dual ATX12V/EPS12V (8-pin / 4+4-pin), 1x fixed dual 8-pin PCIe, 1x modular dual 8-pin PCIe, 1x modular 12V-2x6 (450W / 600W, CX750M 600W), 1x modular SATA (3 SATA), 1x fixed SATA (3 SATA), 1x modular 2 SATA / 1 PATA. The 600W rating is for the CX750M.3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Cables and Connectors table: captive ATX 24 pin 18-22AWG, 4+4 pin ATX12V 16-18AWG, 6+2 pin PCIe 16-18AWG, SATA 18AWG. Modular 6+2 pin PCIe 16-18AWG, 12+2 pin PCIe (600W) 16-24AWG, SATA 18AWG, SATA / 4-pin Molex 18AWG. The gauges are stored. The lengths are Corsair's.

BThermaltake Smart 500W

Connector	Connectors	Cables	Length to first plug (mm)
ATX 24-pin (20+4)	1	1	600
CPU 8-pin (EPS, 4+4)	1	1	650
PCIe 8-pin (6+2)	2	1	500
SATA power	4	1	500
4-pin Molex	4	1	500

Source1Maker product pagethermaltakeusa.com/smart-500w.htmlRead 14 October 2026Connector table: 24-pin x1 on 1 cable at 600 mm, ATX 12V 4+4 pin x1 on 1 cable at 650 mm, PCIe 6+2 pin x2 on 1 cable (500 mm then 150 mm), SATA x4 on 1 cable (500 mm then 150 mm spacing), peripheral 4-pin x4 on 1 cable (500 mm then 150 mm spacing). The Thermaltake manual gives the same connector counts. Retailer listings such as BuildCores show 6 SATA, 3 Molex and 1 floppy, which the maker pages do not list. Wire gauge is not published.2Owner's manualfile.thermaltake.com/file/qig/SMART500.600.700W_US_manual.pdfRead 14 October 2026Power Connector Introduction, 500W row: main power 20+4 pin 1, ATX 12V 4+4 pin 1, PCI-E 6+2 pin 2, SATA 4, peripheral 4 pin 4.

CPU (EPS) connectorsi8-pin or 4+4-pin CPU power plugs.

2=CalculatedFrom Cables

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PCIe 8-pin connectorsi8-pin or 6+2-pin GPU power plugs. Counts the plugs in the box. Some cables share one PSU socket, which the source note says.

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16-pin GPU connectorsiNative 16-pin GPU power plugs: 12V-2x6, 12VHPWR and 16-pin cables of unstated revision. Adapters are not counted. Counts the plugs in the box. Some cables share one PSU socket, which the source note says.

1=CalculatedFrom Cables

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SATA power connectors

8=CalculatedFrom Cables

4=CalculatedFrom Cables

4-pin Molex connectors

1=CalculatedFrom Cables

4=CalculatedFrom Cables

Cable styleiHow the modular cables are made. Mixed means some cables are sleeved and others flat, such as a sleeved 24-pin cable with flat other cables. From the maker page or a review photo page.

Mixed1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Cable listing: the fixed 24-pin, CPU and 8-pin PCIe cables are Sleeved. The modular PCIe, 12V-2x6, SATA and SATA/PATA cables are Flat.

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Fan

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Fan sizeiFrame size of the cooling fan, such as 120, 135 or 140.

120mm1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Tech Specs: Fan Size MM 120mm. The feature text says a low-noise 120mm fan.

120mm1Maker product pagethermaltakeusa.com/smart-500w.htmlRead 14 October 2026Product Specifications: Cooling System 120mm Fan, 1800 RPM plus or minus 10%.

Fan bearingiUse the maker's bearing name. FDB and S-FDB are fluid dynamic. HDB is hydrodynamic. Noctua SSO and SSO2 are SSO. Corsair Magnetic Dome is magnetic dome. A brand bearing name that fits no option is Other.

Sleeve1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Tech Specs: Fan Bearing Technology Sleeve. Cybenetics prints sleeve bearing in its DUT block and fluid dynamic bearing in the fan model line for the same fan HA1225H12F-Z. The maker figure is stored.

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Fan modeiSemi-passive means the fan stops at low load, often sold as zero RPM, hybrid or 0 dB mode. Fanless means the unit has no fan.

Always on1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Tech Specs: Zero RPM Mode No. The feature text says a custom fan curve keeps it silent under low-to-moderate loads, which is not a fan stop.

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Fan mode switchiA button, switch or software setting lets the user turn the semi-passive mode off so the fan always spins. A unit without a semi-passive mode, whose fan the maker says always spins, has no switch, so it is false.

No1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Tech Specs: Zero RPM Mode No, so there is no semi-passive mode to switch off.

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Protection and parts

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ProtectionsiProtections the maker lists, or a retailer spec table copies from the maker, plus protections the Cybenetics protection tests show working (UVP, NLO, SIP). The Cybenetics manufacturer list has no OVP or UVP row, so do not build the list from it alone. A protection that is not listed may still exist. No-load covers no-load operation and no-load protection. Fan failure is a maker's fan failure protection or fan safeguard, also when the Cybenetics manufacturer block lists it.

Over-current (OCP), Over-voltage (OVP), Under-voltage (UVP), Over-power (OPP), Over-temperature (OTP), Short-circuit (SCP), No-load (NLO), Surge and inrush (SIP)2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-cxm-2025Read 15 October 2026Safety and Protection section describes over-voltage (OVP), over-current (OCP), over-temperature (OTP), short-circuit (SCP) and over-power (OPP) protection. UVP, NLO and SIP come from the Cybenetics protection tests.3Measurementcybenetics.com/evaluations/psus/2903Read 15 October 2026Protection Features: UVP passed at 90 V full load and at 80 V (no damage), NLO checked, surge protection by MOV and inrush protection by NTC. The manufacturer block lists OPP, OCP (+12V), OTP, SCP, surge and inrush protection and no fan failure protection.

Over-voltage (OVP), Over-power (OPP), Short-circuit (SCP)2Owner's manualfile.thermaltake.com/file/qig/SMART500.600.700W_US_manual.pdfRead 14 October 2026Total Protection: over voltage protection with trip points per rail, over power protection at 120% to 150% of full load, and short circuit protection. The manual lists no OCP, OTP or UVP.5Retailer pageamazon.com/dp/B014W3EM2WRead 14 October 2026Feature bullet: industry grade protections OPP, OVP and SCP.

All-Japanese capacitorsiThe maker states that every electrolytic capacitor is from a Japanese maker. A Japanese bulk capacitor alone is not enough. A spec row such as "Japanese capacitors" that names no exception counts.

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MTBF (claimed)iThe maker's mean time between failures, such as 100000. An MTTF figure for the whole unit counts too. An MTTF for the fan alone does not. The test temperature goes in the source note.

100,000h1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Tech Specs: MTBF Hours 100,000 hours. The test temperature is not stated.

100,000h1Maker product pagethermaltakeusa.com/smart-500w.htmlRead 14 October 2026Product Specifications: MTBF 100,000 hrs minimum. The test temperature is not stated.2Owner's manualfile.thermaltake.com/file/qig/SMART500.600.700W_US_manual.pdfRead 14 October 2026Environments: MTBF greater than 100,000 hours.5Retailer pageamazon.com/dp/B014W3EM2WRead 14 October 2026Feature bullet: MTBF 100,000 hours.

Monitoring and lighting

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Software monitoringiThe unit reports power, temperature or fan data to PC software over a USB or internal connection.

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SoftwareiThe maker's software for monitoring or control.

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Built-in power displayiA screen on the unit that shows live power draw or other readings.

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RGB lighting

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Dimensions and weight

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DimensionsiBody without cables. Width and height are the back face with the AC inlet. Depth is the length into the case, which decides case fit.

Width150Height86Depth140mm(5.9 × 3.4 × 5.5 in)1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Tech Specs: Dimensions 150mm x 86mm x 140mm. The manual gives height 86 mm, width 150 mm and length 140 mm. The feature text says a compact 140mm (length) design.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-cxm-2025Read 15 October 2026CX750M: height 86mm, width 150mm, length 140mm.

Width150Height86Depth140mm(5.9 × 3.4 × 5.5 in)5Retailer pageamazon.com/dp/B014W3EM2WRead 14 October 2026Description text copied from Thermaltake: dimension (H x W x D) 86mm x 150mm x 140mm. The Amazon table shows 8.9 x 4 x 7 inches, which is the package size and is not stored.

WeightiWeight of the unit alone. Use the Hardware Busters figure on hwbusters.com when the maker states none, not a copy on another site. Maker weights that include cables or the box, such as Corsair's, and retailer packed weights are not stored. A net weight counts unless the maker says it includes the cables.

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In the box

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In the boxiItems supplied with this exact model, verbatim. The AC power cord differs per region.

CX-M Series ATX Power Supply, Modular DC Cable Set, AC Power Cable, Warranty & Safety Documentation1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Package Contents: CX-M Series ATX Power Supply, Modular DC Cable Set, AC Power Cable, Warranty & Safety Documentation. The cables are stored in the cables field. The AC cable differs per region.

SMART power supply unit, AC power cord, User manual, Mounting screw x 42Owner's manualfile.thermaltake.com/file/qig/SMART500.600.700W_US_manual.pdfRead 14 October 2026Components Check: SMART power supply unit, AC power cord, user manual, mounting screw x 4.

Links

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Product page

www.corsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-na1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026

www.thermaltakeusa.com/smart-500w.html1Maker product pagethermaltakeusa.com/smart-500w.htmlRead 14 October 2026

Spec sheet

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Manual

www.corsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-cxm-20252Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-cxm-2025Read 15 October 2026Corsair quick start guide for the CX-M Series (3rd GEN). It covers the CX650M and the CX750M.

file.thermaltake.com/file/qig/SMART500.600.700W_US_manual.pdf2Owner's manualfile.thermaltake.com/file/qig/SMART500.600.700W_US_manual.pdfRead 14 October 2026

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.

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Warranty

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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.

7years1Maker product pagecorsair.com/us/en/p/psu/cp-9020311-na/cx-m-series-cx750m-atx-3-1-cybenetics-bronze-semi-modular-psu-cp-9020311-naRead 15 October 2026Tech Specs: Warranty 7 Year. The page is the Corsair US store.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-cxm-2025Read 15 October 2026Warranty: CX-M Series (3rd GEN) power supplies have a 7-year warranty.

5years3Maker product pagesupport.thermaltake.com/csWarranty.aspxRead 14 October 2026Warranty table: Power Supply, Smart Series, 5 years. The page lists series and not models and names no region for power supplies. Amazon's listing also says 5 years.5Retailer pageamazon.com/dp/B014W3EM2WRead 14 October 2026Item details: Warranty Description 5 years.

Both are also in the API. Back to all power supplies.