Seasonic CORE GX White ATX 3.1 750W 80 Plus Gold Modular PSU
Seasonic
Seasonic CORE GX White ATX 3.1 750W 80 Plus Gold Modular PSU
The Seasonic CORE GX White ATX 3.1 is a 750 W power supply built for modern PC builders upgrading to ATX 3.1 and PCIe 5.1 graphics cards. It balances cost and performance with 80 PLUS Gold efficiency, fully modular white braided cables, and a seven-year warranty.
Why this product
ATX 3.1 and PCIe 5.1 ready
Complies with the latest standards for next-generation GPUs and motherboards. Includes a 12V-2×6 to 2×8-pin adapter for backward compatibility with older graphics cards.
80 PLUS Gold efficiency
Achieves 90% efficiency at 50% system load, reducing power draw and heat generation during typical workloads.
Fully modular white cables
Individual white braided cables let you connect only what you need, keeping cable clutter minimal and airflow clean inside the case.
Quiet 120 mm fan
Hydro Dynamic Bearing fan paired with Smart and Silent Fan Control keeps noise low during light loads and ramps up cooling only when needed.
Seven-year warranty
Backed by Seasonic's global manufacturer's warranty, covering parts and labour for seven years.
- Total Power Output750 W
- Efficiency Rating80 PLUS® Gold (90% at 50% load)
- Form FactorATX/EPS
- Modular DesignFully Modular
- Warranty7 Years
- SKUSEA-784
- EAN4711173878711
- ATX motherboards and standard tower cases with 140 × 150 × 86 mm mounting space
- Next-generation PCIe 5.1 graphics cards with 12V-2×6 (16-pin) connectors
- SATA and traditional four-pin Molex peripherals via 6 SATA and 4-pin Molex connections
- AC input 100–240 V, 50–60 Hz, suitable for most regions worldwide
- Legacy PCIe graphics cards (6-pin and 8-pin) require the included 12V-2×6 to 2×8-pin adapter cable
Best for
- New builds with ATX 3.1 motherboards and PCIe 5.1 GPUs
- Users upgrading from older PSUs who want modern efficiency and standards support
- Build aesthetics that matter—white cables coordinate with modern case and component designs
- Systems where cable management and case airflow influence thermal performance
Trade-offs
- High-end or multi-GPU workloads—750 W suits mid-range gaming and content creation, not extreme overclocking or professional compute rigs
- Compact or SFF builds—dimensions are 140 × 150 × 86 mm, suitable only for standard and full-size cases
- Passive or fanless cooling requirements—it includes a 120 mm fan that cannot be disabled entirely
The updated Seasonic CORE GX White ATX 3.1 Series complies with the latest ATX 3.1 and PCIe 5.1 standards and includes four output ranges from 1000 W to 650 W in both black and white colors.
Catering to a broad spectrum of PC enthusiasts and system builders, these power supplies provide a fine balance between cost and performance.
The 80 PLUS® Gold certified Seasonic's Core GX White line is a fully modular design equipped with white cables featuring a braided pattern. These power supplies are solid performers for a large range of applications, where a 120 mm Hydro Dynamic Bearing fan is combined with Seasonic's Smart and Silent Fan Control to ensure the optimal cooling performance at the lowest possible noise level. These quality power supplies are backed up by Sea Sonic's 7-year worldwide manufacturer's warranty.
The CORE GX ATX 3.1 (2024) Series achieves 80 PLUS® Gold certification with its 90 % efficiency at 50 % system load.
The overall quality and reliability of the new CORE GX White ATX 3.1 Series has been greatly improved by a brand-new PCB (Printed Circuit Board) layout and the implementation of automated surface mount technology during production, which minimizes human production errors.
In Sea Sonic's patented design feature full modularity comes hand-in-hand with the extensive use of SMD technology to increase the overall performance and reliability of this power supply. The simple and inventive layout scheme helps to attain unsurpassed quality and performance, where efficiency is further enhanced by minimized line resistance, reduced voltage drop and lower impedance. Reduced component count and better space utilization facilitate optimal air flow inside the case and promote heat dissipation, proper cooling and ultimately longer product life.
To ensure compatibility with older GPUs, the CORE White GX ATX 3.1 includes a 12V-2x6 to 2× 8-pin PCIe adapter cable. It delivers reliable power up and works seamlessly with graphics cards from previous generations. This cable makes it easy to upgrade your PSU without changing your GPU—perfect for users who want next-gen power with legacy support.
General
| Brand | Seasonic |
|---|---|
| Model Number | SRP-CGX751-A5A32SF-W |
| Colour | White |
Power Delivery
| +12V Rail Output | 744 W |
|---|---|
| +12V Rail Current | 62A |
| +5V Rail Current | 20A |
| +3.3V Rail Current | 20A |
| Total 3.3V & 5V Rails | 100 W |
| +5Vsb Current | 3A |
| -12V Rail Current | 0.3A |
Cooling & Physical
| Fan Size | 120 mm |
|---|---|
| Fan Bearing Type | Hydro Dynamic Bearing |
| Fan Control | Smart and Silent Fan Control |
| Fan Life Expectancy | 25,000 hours at 40 °C |
| Dimensions | 140 × 150 × 86 mm |
Connectors & Standards
| PCIe Connectors (12V-2×6) | 1× |
|---|---|
| PCIe 6+2-pin Connectors | 3× |
| SATA Connectors | 6 |
| Modular Cable Type | Individual white cables with braided pattern |
| Standards Compliant | ATX 3.1, PCIe 5.1 |
| Included Adapter | 12V-2×6 to 2× 8-pin PCIe adapter cable |
Electrical & Environmental
| AC Input Voltage | 100–240 V |
|---|---|
| AC Input Frequency | 50–60 Hz |
| Operating Temperature Range | 0–50 °C (derating 100% to 80% from 40–50 °C) |
| Protections | OCP, OPP, UVP, OTP, OVP, SCP |
| MTBF | 100,000 hours |
| Environmental Compliance | Energy Star, ErP Lot 6, REACH, RoHS, WEEE |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.