Why you can trust Tom's Hardware Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.
Performance, Noise and Efficiency
Performance Rating
The SilverStone ST1200-PTS performs much better than its predecessor, the ST1200-PT, but still it is behind other high-end 1200W units, though these competitors are larger.
Noise Rating
The graph below depicts the cooling fan's average noise over the PSU's operating range, with an ambient temperature between 30°C and 32°C (86°F to 89.6°F).
The overall noise output is quite low, given the high capacity and the small footprint.
Efficiency Rating
The following graph shows the PSU's average efficiency throughout its operating range with an ambient temperature close to 30°C.
This is a highly-efficient platform. The AX1000i that scores first in this chart has lower capacity and is 80 PLUS Titanium (and ETA-A+) certified, while the ST1200-PTS is an 80 PLUS Platinum unit (which manages to achieve an ETA-A+ rating though, which is usually only obtained by good 80 PLUS Titanium units).
MORE: Best Power Supplies
MORE: How We Test Power Supplies
MORE: All Power Supply Content
Nintendo Switch 2 design seemingly leaked by carrying case maker — similar aesthetics but with a larger screen and Joy-Cons
Elon Musk reportedly wanted OpenAI to be a for-profit entity but has now sued to block the move
PlayStation 5 transformed into a laptop for $2,750 — Chinese modders made Sony's console more portable with a 17.3-inch 4K display weighing over 9 pounds
