Seasonic
Seasonic CORE GX-650 650W Power Supply ATX 3.1 & PCIe 5.1 Ready
Bottom line: The Seasonic CORE GX-650 650W Power Supply ATX 3.1 & PCIe 5.1 Ready ($114.98 on Amazon as of 2026-10-06): ATX 3.1 and PCIe 5.1 ready with a native 12V-2x6 connector; main trade-off: 650W ceiling rules out RTX 5080/5090-class builds.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ ATX 3.1 and PCIe 5.1 ready with a native 12V-2x6 connector
- ✓ 80 PLUS Gold certified efficiency
- ✓ Rated for NVIDIA RTX 5060 Ti and AMD RX 9000 cards
- ✓ Includes a 12V-2x6 to dual 8-pin PCIe adapter cable
Cons
- ✗ 650W ceiling rules out RTX 5080/5090-class builds
- ✗ OptiSink cooling design is not detailed in the listing spec sheet
- ✗ Seasonic does not list modularity for the CORE GX-650 here
- ✗ No fan size, dimensions, or noise rating published in the listing
SpecPicks Verdict
SpecPicks scored Seasonic CORE GX-650 650W Power Supply ATX 3.1 & PCIe 5.1 Ready using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Seasonic's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- ATX 3.1 / PCIE 5.1 ready. Native 12V-2x6 connector
- 80 PLUS Gold certified
- OptiSink Design
- NVIDIA RTX 5060 Ti AMD RX 9000 ready
- 12V-2x6 to dual 8-pin PCIe cable included
Full Specifications
| Brand | Seasonic |
|---|---|
| Wattage | 650 watts |
| Model Name | Core GX-650 ATX 3.1 |
| Form Factor | ATX |
| Model Number | CORE V2 GX-650 (ATX3) |
| Connector Type | ATX |
| Cooling Method | Air |
| Number of Fans | 1 |
| Output Wattage | 650 watts |
| Item Dimensions | 5.5 x 5.9 x 3.4 inches |
| Mfr Part Number | CORE V2 GX-650 (ATX3) |
| Number of Items | 1 |
| Compatible Devices | ATX motherboards, PCIe 5.0 graphics cards, standard ATX power supplies, various storage drives, and standard cooling systems |
| Warranty Description | 7 years |
| Maximum Input Voltage | 240 volts_of_alternating_current |
| Minimum Input Voltage | 90 volts_of_alternating_current |
| Item dimensions L x W x H | 5.5 x 5.9 x 3.4 inches |
| System Bus Connector Type | ATX |
| Connector Type Used on Cable | ATX |
| Global Trade Identification Number | 04711173878452 |
Ready to buy?
Seasonic CORE GX-650 650W Power Supply ATX 3.1 & PCIe 5.1 Ready is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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