PC parts / Power supplies
SeasonicPower supply
CORE GX-750 (2024)
Released December 2024.2Press releasefunkykit.com/news/seasonic-launches-updated-core-atx-3-psu-series-with-atx-3-1-and-pcie-gen-5-1Read 15 October 2026Seasonic's launch release, posted by Funky Kit on December 6, 2024. Estimated time to market was late December 2024 for the black version in Europe, January 2025 in the USA and Q4 2024 for the rest of the world. LDLC listed the family on December 5, 2024 and Geeknetic reviewed the 750W on December 27, 2024. Last checked 15 October 2026.
- Power
- 750W
- Efficiency
- 80 PLUS Gold
- Modular cables
- Fully modular
- ATX version
- ATX 3.1
55 of 66 fields known.
General
- Model numbers
- SRP-CGX751-A5A32SF, SRP-CGX751-A5A32SF-W3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026Part No. SRP-CGX751-A5A32SF, the black unit. The white unit's number SRP-CGX751-A5A32SF-W comes from the AWD-IT listing.4Retailer pageldlc.com/en/product/PB00657445.htmlRead 15 October 2026Model SRP-CGX751-A5A32SF, product name Seasonic CORE GX ATX 3 (2024) 750 W.5Retailer pageawd-it.co.uk/seasonic-core-gx-750-750w-atx-3-1-power-supply-white-srp-cgx751-a5a32sf-w.htmlRead 15 October 2026MPN SRP-CGX751-A5A32SF-W for the white CORE GX-750.
- GTIN / EAN
- 4711173878469, 47111738787113Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026EAN 4711173878469 for SRP-CGX751-A5A32SF (black). The check digit is valid. The page says WESTech no longer sells the unit, which is a statement about that shop's range.5Retailer pageawd-it.co.uk/seasonic-core-gx-750-750w-atx-3-1-power-supply-white-srp-cgx751-a5a32sf-w.htmlRead 15 October 2026EAN 4711173878711 for SRP-CGX751-A5A32SF-W (white). The check digit is valid. The listing's Non-Modular line contradicts Seasonic, Cybenetics and every other source, so it is ignored.
- Announced
- 6 December 20242Press releasefunkykit.com/news/seasonic-launches-updated-core-atx-3-psu-series-with-atx-3-1-and-pcie-gen-5-1Read 15 October 2026Press release dated December 6, 2024.
- Status
- Available4Retailer pageldlc.com/en/product/PB00657445.htmlRead 15 October 2026The French shop's page shows the unit in stock in October 2026.5Retailer pageawd-it.co.uk/seasonic-core-gx-750-750w-atx-3-1-power-supply-white-srp-cgx751-a5a32sf-w.htmlRead 15 October 2026UK retailer listing shows the white unit in stock, fewer than 3 available, in October 2026.
- Predecessor
- Not available
- Successor
- Not available
- Launch price (US)
- From $99.992Press releasefunkykit.com/news/seasonic-launches-updated-core-atx-3-psu-series-with-atx-3-1-and-pcie-gen-5-1Read 15 October 20265Retailer pageawd-it.co.uk/seasonic-core-gx-750-750w-atx-3-1-power-supply-white-srp-cgx751-a5a32sf-w.htmlRead 15 October 2026
- Launch price (EU)
- From €115.92Press releasefunkykit.com/news/seasonic-launches-updated-core-atx-3-psu-series-with-atx-3-1-and-pcie-gen-5-1Read 15 October 20265Retailer pageawd-it.co.uk/seasonic-core-gx-750-750w-atx-3-1-power-supply-white-srp-cgx751-a5a32sf-w.htmlRead 15 October 2026
- Colours
- Black, White2Press releasefunkykit.com/news/seasonic-launches-updated-core-atx-3-psu-series-with-atx-3-1-and-pcie-gen-5-1Read 15 October 2026Available in black and white.
- Form factor
- ATX3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026The page copies Seasonic's spec table. Form Factor ATX/EPS, 140 x 150 x 86 mm, which is the ATX back face of 150 x 86 mm.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026DUT Information: Type ATX12V.
- PCIe CEM version
- PCIe 5.12Press releasefunkykit.com/news/seasonic-launches-updated-core-atx-3-psu-series-with-atx-3-1-and-pcie-gen-5-1Read 15 October 2026The units comply with PCIe Gen 5.1.
- Modular cables
- Fully modular2Press releasefunkykit.com/news/seasonic-launches-updated-core-atx-3-psu-series-with-atx-3-1-and-pcie-gen-5-1Read 15 October 202680 Plus Gold certified units with a fully modular design and color-matching cables with a braided pattern.4Retailer pageldlc.com/en/product/PB00657445.htmlRead 15 October 2026Modularity: 100% modular.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026DUT Information: Cable Design Fully Modular.
Power
- Rated continuous power
- 750W3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026Total continuous power 750 W.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026DUT Information: Rated Power 750 W. The Power Specifications table gives a total maximum power of 750 W.
- 12V rail design
- Single rail6Reviewgeeknetic.es/Review/3008/Seasonic-CORE-ATX-3-GX-750-Review.htmlRead 15 October 2026Spec list: Numero de railes: 1 de 12v.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Power Specifications table lists one +12V column, 62A.
- +12V max current
- 62A3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026DC output: +3.3 V 20 A, +5 V 20 A, +12 V 62 A, -12 V 0.3 A, +5 VSB 3 A.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Power Specifications table: +12V 62 A.
- +12V max power
- 744W3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026Maximum power row: 100 W, 744 W, 3.6 W and 15 W, with total continuous power 750 W. The 744 W is the +12V figure.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Power Specifications table: +12V 744 W, total maximum power 750 W.
- +3.3V and +5V combined power
- 100W3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026Maximum power row prints 100 W once for the +3.3 V and +5 V rails, so it is one shared limit.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Power Specifications table: one merged cell of 100 W under +3.3V and +5V, so it is one shared limit. Each rail is 20 A.
- +5V standby current
- 3A3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026DC output: +5 VSB 3 A.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Power Specifications table: +5VSB 3 A, 15 W.
- AC input voltage
- Lowest100Highest240V3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026AC input 100 V - 240 V, 10 - 5 A, 50 Hz - 60 Hz.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026DUT Information: Rated Voltage 100-240 Vrms, manufacturer-provided.
- Alternative low power mode (ALPM)
- Yes8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Temperature and Compliance Info: ALPM (Alternative Low Power Mode) compatible, checked. ATX v3.1 PSU Power Excursion is also checked. The ATX 3.1 badge on the report reads Outside Validation Scope.
Certifications
- Cybenetics efficiency at 115V
- Cybenetics Platinum8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Report 25PS2753A, certification ID 252753, tested Feb 26, 2025 and issued Mar 6, 2025. ETA Platinum at 115V (badge image). Seasonic's retail listings print Cybenetics levels as TBA and 80 PLUS Gold.
- Cybenetics efficiency at 230V
- Cybenetics Platinum8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026ETA Platinum at 230V (badge image).
Measured
- Average efficiency at 115V (measured)
- 89.208%8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Average over more than 1450 load combinations at 115V. Ambient 28-32 C. Sample received Feb 11, 2025.
- Average efficiency at 230V (measured)
- 91.222%8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Average over more than 1450 load combinations at 230V.
- Light-load efficiency at 115V (measured)
- 70.718%8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Efficiency at 2% load at 115V. The unit is above 500 W, so the 2% load applies. At 230V it is 71.308%.
- Average power factor at 115V (measured)
- 0.9778Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Average over more than 1450 load combinations at 115V. At 230V it is 0.935.
- Average noise at 115V (measured)
- 29.84dB(A)8Measurementcybenetics.com/evaluations/psus/2753Read 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 29.82 dBA.
- Noise at full load at 115V (measured)
- 42.3dB(A)8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Typical load tests at 115V, 100% load row: 42.3 dB(A) at 1583 rpm fan speed, intake 45.48 C and exhaust 57.56 C. The fan runs at all loads on this unit.
- Standby power with no load at 115V (measured)
- 0.0749W8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Standby power consumption at 115V with no load on +5VSB. At 230V it is 0.1753 W.
- Hold-up time (measured)
- 15.9ms8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Hold-Up Time and PWR_OK Signal: hold-up time 15.9 ms, AC loss to PWR_OK 11.7 ms, at maximum continuous load. Report 2753.
- 12V ripple at full load (measured)
- 31.17mV8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Non-accredited. 12V ripple at full load at 115V. At 230V it is 32.07 mV.
- 12V load regulation (measured)
- 1.13%8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Non-accredited. 12V load regulation at 115V. At 230V it is 1.13%.
Cables and connectors
- Cables
Connector Connectors Cables Length to first plug (mm) Wire gauge Rated power (W) ATX 24-pin (20+4) 1 1 610 16-18AWG Not available CPU 8-pin (EPS, 4+4) 2 2 750 16AWG Not available PCIe 8-pin (6+2) 2 1 700 16-18AWG Not available 12V-2x6 1 1 700 16AWG 600 SATA power 6 2 455 18AWG Not available 4-pin Molex 3 1 455 18AWG Not available Source4Retailer pageldlc.com/en/product/PB00657445.htmlRead 15 October 2026Connector rows: 2x +12V (P8 - 2 x P4), 6x Serial ATA, 1x ATX 20+4 pin, 3x Molex 4 pin, 2x PCI Express 6+2 pin, 1x PCI Express 16 pin (12V-2x6). These are the plug counts that the stored table uses.6Reviewgeeknetic.es/Review/3008/Seasonic-CORE-ATX-3-GX-750-Review.htmlRead 15 October 2026The set holds a 610 mm ATX cable, two 750 mm EPS cables, the 12V-2x6 cable, a cable that turns the 12V-2x6 connector into two 8-pin PEG plugs with the same 600 W limit, two SATA cables with up to 3 connectors and a 750 mm maximum length, and one Molex cable with three connectors and a 690 mm maximum length. The SATA and Molex lengths run to the last plug.7Reviewkitguru.net/components/power-supplies/zardon/seasonic-core-gx-850-atx-3-reviewRead 15 October 2026Page 2 of KitGuru's CORE GX 850 review shows Seasonic's Cable Summary slide for the whole CORE GX ATX 3 family, with one column per output. The 750 W column reads: MB 610 mm 1 cable with 20+4 pins, CPU 750 mm 2 cables with 4+4 pins, 12V-2x6 700 mm 1 cable, PCIe 750 mm with 6+2 pins 0 cables, PCIe 700 mm with 16 pins to 2 x 6+2 pins 1 cable, SATA 750 mm 2 cables with 3 connectors, Molex 690 mm 1 cable with 3 connectors. The slide has no single 6+2 pin PCIe cable for the 750 W unit, so the unit has 2 PCIe 8-pin plugs on 1 cable. The Cybenetics sample lists one more single 6+2 pin cable at 750 mm, which is not stored. Cable lengths to the first plug come from the Cybenetics report for SATA and Molex, since the slide gives lengths to the last plug. The 16-pin to dual 8-pin cable shares the 12V-2x6 PSU socket with the native 12V-2x6 cable on the 850 W unit, as the page 3 photo of the modular panel shows. The same panel is expected here, but no photo of the 750 W unit confirms it.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Cables and Connectors table: ATX 615 mm 16-18AWG, EPS 4+4 750 mm 16AWG (2 cables), 2x 6+2 PCIe 700 mm on one cable with two plugs 16-18AWG, a single 6+2 PCIe 750 mm cable 16-18AWG, 12+4 pin PCIe 700 mm (600W) 16-28AWG, SATA 455 mm then 155 mm then 155 mm on 2 cables (6 plugs, 18AWG), 4-pin Molex 455 mm then 125 mm then 125 mm on 1 cable (3 plugs, 18AWG). The stored ATX, EPS and 12V-2x6 lengths and the PCIe cable follow Seasonic's cable slide. The 16-28AWG range of the 12V-2x6 cable includes the thin sideband wires, so the 16AWG power wire gauge is stored. The extra single 6+2 pin cable in the sample is not in Seasonic's slide.- CPU (EPS) connectors
- 2
- PCIe 8-pin connectors
- 2
- 16-pin GPU connectors
- 1
- SATA power connectors
- 6
- 4-pin Molex connectors
- 3
- Cable style
- Sleeved3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026Cable type: Individual Black Cables with Braided Pattern.6Reviewgeeknetic.es/Review/3008/Seasonic-CORE-ATX-3-GX-750-Review.htmlRead 15 October 2026The cables have individual sleeving of a plastic material with a textured finish like nylon braid, and the same sleeving goes on every cable.
Fan
- Fan size
- 120mm2Press releasefunkykit.com/news/seasonic-launches-updated-core-atx-3-psu-series-with-atx-3-1-and-pcie-gen-5-1Read 15 October 2026A 120 mm hydro dynamic bearing fan with Seasonic's Smart and Silent Fan Control.3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026Fan Size 120 mm, Fan Control Smart and Silent Fan Control, life expectancy 25,000 hours at 40 C.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Parts Description: Hong Hua HA1225H12F-Z, 120 mm.
- Fan bearing
- Hydrodynamic (HDB)2Press releasefunkykit.com/news/seasonic-launches-updated-core-atx-3-psu-series-with-atx-3-1-and-pcie-gen-5-1Read 15 October 2026Hydro dynamic bearing fan, 120 mm.3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026Fan Bearing: Hydro Dynamic Bearing.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Parts Description: Hong Hua HA1225H12F-Z, 120 mm, 12V, 0.58A, Fluid Dynamic Bearing Fan. Seasonic's own wording is Hydro Dynamic Bearing.
- Fan mode
- Always on6Reviewgeeknetic.es/Review/3008/Seasonic-CORE-ATX-3-GX-750-Review.htmlRead 15 October 2026These models do not stop the fan at idle. It always runs under PWM control at about 40% PWM up to 60% load, with idle speeds of about 400 rpm. The review lists the lack of a hybrid fan stop as a negative.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026DUT Information: Semi-Passive Operation not checked. The fan reads 864 rpm at 10% load.
- Fan mode switch
- No6Reviewgeeknetic.es/Review/3008/Seasonic-CORE-ATX-3-GX-750-Review.htmlRead 15 October 2026The review describes no fan mode switch and no hybrid fan mode. The unit has no semi-passive mode to switch off.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026DUT Information: Semi-Passive Operation not checked, so there is no mode to switch off.
Protection and parts
- Protections
- 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)3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026Protection: OCP, OPP, OTP, SCP, OVP, UVP. NLO and SIP come from the Cybenetics protection tests.8Measurementcybenetics.com/evaluations/psus/2753Read 15 October 2026Protection Features (Manufacturer) lists OPP, OCP (+12V), OTP, SCP, surge protection and inrush current protection. Fan failure protection is not ticked. The protection tests tick NLO and show SIP: surge MOV, inrush NTC and bypass relay.
- All-Japanese capacitors
- Not available
Monitoring and lighting
- Software monitoring
- Not available
- Software
- Not available
- Built-in power display
- Not available
Dimensions and weight
Front and side, drawn to scale.
- Dimensions
- Width150Height86Depth140mm(5.9 × 3.4 × 5.5 in)3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026140 mm (L) x 150 mm (W) x 86 mm (H). Depth 140, width 150, height 86. The page lists the Cybenetics levels as TBA, so those fields come from the Cybenetics report.4Retailer pageldlc.com/en/product/PB00657445.htmlRead 15 October 2026Height 86 mm, width 150 mm, length 140 mm.6Reviewgeeknetic.es/Review/3008/Seasonic-CORE-ATX-3-GX-750-Review.htmlRead 15 October 2026Spec list: 140 mm (L) x 150 mm (W) x 86 mm (H).
- Weight
- Not available
In the box
We could not find any of these 1 fields. Show them
- In the box
- Not available
Links
- Product page
- seasonic.com/core-gx-atx-3-20241Maker product pageseasonic.com/core-gx-atx-3-2024Read 15 October 2026Seasonic's site is blocked for agents, so the page text was not read. The link is the CORE GX ATX 3.1 family page that search results name for this unit. The specs come from Seasonic's launch release, retailer copies of Seasonic's spec table, the cable slide Seasonic's own presentation shows in a KitGuru review, the 80 PLUS list, a review and the Cybenetics report.
- Spec sheet
- Not available
- Manual
- Not available
- EPREL registration number
- Not available
Warranty
- Manufacturer warranty (source market)
- 7years2Press releasefunkykit.com/news/seasonic-launches-updated-core-atx-3-psu-series-with-atx-3-1-and-pcie-gen-5-1Read 15 October 2026Sea Sonic's 7-year worldwide manufacturer's warranty.3Retailer pageonline.westech.sk/seasonic-core-gx-gold-750w-v2-atx-3-1-pcie-5-1-modular_d175947.htmlRead 15 October 2026Warranty 7 Years.
Compare with
Pick a power supply to see both side by side. Differences are marked yellow.
Variants
Each variant lists only what differs from the specs above.
| Model number | GTIN | Launch price (US) | Launch price (EU) | Markets | Colours |
|---|---|---|---|---|---|
| SRP-CGX751-A5A32SF | 4711173878469 | $99.99 | €115.9 | US, EU | Black |
| SRP-CGX751-A5A32SF-W | 4711173878711 | Not available | Not available | Not available | White |
Sources
We read 9 sources for this power supply. The numbers match the markers in the sheet.
- Maker product pageseasonic.com/core-gx-atx-3-2024
- Retailer pageldlc.com/en/product/PB00657445.html
- Measurementcybenetics.com/evaluations/psus/2753
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