GoKawiilThe ASRock Steel Legend SL-1200P is a strong contender in the high-wattage modular PSU segment. It combines legitimate Platinum-tier efficiency, excellent ripple suppression, dual 12V-2x6 outputs, and a distinctive aesthetic at a price that is firm but interesting. A few thermal concerns at extreme loads and aggressive protection thresholds are the primary caveats.
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ASRock was founded in 2002 as a spin-off from Asus, originally tasked with producing value-oriented motherboards for cost-sensitive markets. Over the following two decades, it grew into a serious competitor across the motherboard and graphics card spaces, eventually expanding into monitors, mini PCs, and industrial compute platforms. The PSU market, however, was conspicuously absent from its catalog until recently, when the company announced a broad simultaneous launch of nearly twenty power supply models spanning four distinct series: Taichi, Phantom Gaming, Steel Legend, and Challenger. It was not a cautious entry at all. ASRock came in with a full lineup covering wattages from 550W to 1650W, certifications ranging from 80Plus Bronze to Titanium, and a ten-year warranty across its premium tiers, signaling a serious long-term commitment to the segment.
The Steel Legend PSU series sits in the middle of that hierarchy. The base "G" variants are Gold-certified, fully modular, and aimed at mainstream builders. The "P" variants, of which the SL-1200P is one, step up to Platinum efficiency and add higher wattage headroom, dual 12V-2x6 connectors, and a set of engineering refinements that make a valiant effort to justify the premium. With all its merits, the ASRock Steel Legend SL-1200P deserves a spot in our list of best power supplies.
Specifications and Design
Swipe to scroll horizontally ASRock Steel Legend SL-1200P Power specifications ( Rated @ 50 °C ) RAIL +3.3V +5V +12V +5Vsb -12V MAX OUTPUT 25A 25A 100A 3A 0.3A Row 2 - Cell 0 150W 150W 1200W 15W 3.6W TOTAL 1200W Row 3 - Cell 2 Row 3 - Cell 3 Row 3 - Cell 4 Row 3 - Cell 5 AC INPUT 100 - 240 VAC, 50 - 60 Hz Row 4 - Cell 2 Row 4 - Cell 3 Row 4 - Cell 4 Row 4 - Cell 5 MSRP $180 Row 5 - Cell 2 Row 5 - Cell 3 Row 5 - Cell 4 Row 5 - Cell 5
In the Box
The SL-1200P ships in a substantial cardboard box. The packaging uses a metallic stripe motif with a picture of the unit on the front, serious in tone and consistent with the Steel Legend branding. Inside, the PSU is wrapped in a protective pouch and surrounded by foam inserts.
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