Seasonic
S12III 650 SSR-650GB3 650W 80+ Bronze ATX12V & EPS12V Direct Cable Wire Output Smart & Silent Fan Control Power Supply
*Price sourced from Amazon.com. Last updated 2026-05-27. Price and availability subject to change.
Bottom line: The S12III 650 SSR-650GB3 650W 80+ Bronze ATX12V & EPS12V Direct Cable Wire Output Smart & Silent Fan Control Power Supply is a category leader on buyer feedback in the power supplies category, priced around $59.99, rated 4.6★ across 1,697 verified Amazon reviews. A confident buy for most shoppers in this category.
The S12III Bronze Series is available in the standard ATX Form Factor and in wattages that are most common for a PC system. The Sea sonic S12III-Series achieves 80 PLUS Bronze standard of providing at least 82 %, 85 % and 82 % power usage efficiency at 20 %, 50 % and 100 % operating loads, respectively. This efficiency, combined with Active Power Factor Correction, enables the S12III Bronze series power supplies to lessen energy waste, which translates into savings on the costs of energy costs for its users. In addition to being greatly efficient, the S12II units maintain important features…
SpecPicks Verdict
SpecPicks classifies Seasonic S12III 650 SSR-650GB3 650W 80+ Bronze ATX12V & EPS12V… as a category leader on buyer feedback in the power supplies category, based on 1,697 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. Seasonic's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
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 Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Highly rated — 4.6★ average across customer reviews
- ✓ Large, well-vetted feedback pool (1,697 reviews)
- ✓ Fixed cabling - Provides all the necessary cables required for a standard pc.
- ✓ Backed by Seasonic's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Fixed cabling - Provides all the necessary cables required for a standard pc.
- 80 plus Bronze - 82% efficient at 20% load, 85% efficient at 50% load, and 82% efficient at 100% load.
- 120 mm SLEEVE BEARING FAN; The 120 mm fan inside is regulated by the Sea sonic S2FC fan control, which optimizes the fan speed according to the needs of the system to create a quiet and pleasant environment.
- 5 year warranty ; Our commitment to superior quality.
Full Specifications
| Brand | Seasonic |
|---|---|
| Wattage | 650 watts |
| Fan Size | 120 Millimeters |
| Model Name | S12III 650 |
| Unit Count | 1.0 Count |
| Form Factor | ATX12V |
| Model Number | SSR-650GB3 |
| Compatibility | PC |
| Connector Type | ATX |
| Cooling Method | Air |
| Number of Fans | 1 |
| Output Wattage | 650 |
| Item Dimensions | 5.5 x 5.9 x 3.3 inches |
| Mfr Part Number | SSR-650GB3 |
Ready to buy?
Seasonic S12III 650 SSR-650GB3 650W 80+ Bronze ATX12V & EPS12V Direct Cable Wire Output Smart & Silent Fan Control Power Supply is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-27. Price and availability subject to change.
Related Power Supplies
