ASRock
ASRock Steel Legend SL-1200G 1200W 80 Plus Gold & Cybenetics Platinum Full Modular Power Supply ATX3.1 & PCIe5.1 Ready with Dual Color 12V-2x6 Cable 10 Years Warranty
Bottom line: The ASRock Steel Legend SL-1200G 1200W 80 Plus Gold & Cybenetics Platinum ($139.99 on Amazon as of 2026-10-06): 1200W ATX 3.1 headroom covers RTX 5090-class transient spikes; main trade-off: ASRock lists chassis fit caveats, so measure before you buy.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 1200W ATX 3.1 headroom covers RTX 5090-class transient spikes
- ✓ Cybenetics Platinum plus 80 PLUS Gold, up to 90% efficiency at typical load
- ✓ 10-year warranty on defects and component failure
- ✓ Native dual-color 12V-2x6 cable flags an unseated GPU plug
- ✓ 100% Japanese capacitors across the board, not just primary
Cons
- ✗ ASRock lists chassis fit caveats, so measure before you buy
- ✗ Fully modular cables add bulk in small-form-factor cases
- ✗ 1200W is oversized for single-GPU builds under 400W
SpecPicks Verdict
SpecPicks scored ASRock Steel Legend SL-1200G 1200W 80 Plus Gold & Cybenetics… using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. ASRock'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
- 80 PLUS Gold Certified, Cybenetics Platinum & LAMBDA A Certified, delivering exceptional energy efficiency up to 90% under typical loads
- ATX3.1 & PCIe5.1 Ready, Fully compliant with latest standards for next-generation components and graphics cards
- Fully Modular Design, Customizable cable management for optimal airflow and clean builds
- Native 12V-2x6 Connector, Dual-color design ensures safe and secure high-power delivery to GPUs
- Premium Japanese Capacitors, 100% highly reliable Japanese capacitors guarantee longevity and stable performance
- Advanced Cooling System, 135mm striped axial FDB fan with iCool intelligent fan control for near-silent operation
Full Specifications
| Brand | ASRock |
|---|---|
| Weight | 1200g |
| Wattage | 1200 watts |
| Model Name | SL-1200G |
| Form Factor | ATX |
| Model Number | 90-UXS120-GFUAAA |
| Connector Type | ATX, PCI Express |
| Cooling Method | Air |
| Number of Fans | 1 |
| Output Wattage | 1200 watts |
| Item Dimensions | 5.9 x 5.9 x 3.39 inches |
| Number of Items | 1 |
| Compatible Devices | Personal Computer |
| Power Supply Design | Full Modular |
| Warranty Description | 10 years |
| Item dimensions L x W x H | 5.9 x 5.9 x 3.39 inches |
| System Bus Connector Type | ATX |
| Connector Type Used on Cable | ATX, PCI Express |
| EU Spare Part Availability Duration | 10 years |
Ready to buy?
ASRock Steel Legend SL-1200G 1200W 80 Plus Gold & Cybenetics Platinum Full Modular Power Supply ATX3.1 & PCIe5.1 Ready with Dual Color 12V-2x6 Cable 10 Years Warranty 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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