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Performance Rating
The following graph shows the total performance rating of the SF600 Platinum, comparing it to other units we have tested. To be more specific, the tested unit is shown as 100 percent, and every other unit's performance is shown relative to it.
Hand's down this is the best performer in the SFX category, with SilverStone's passive unit coming second. Corsair along with Great Wall proved for another one time that they are on top of the game.
Performance Per Dollar
The following chart may be the most interesting to many of you because it depicts the product’s performance-per-dollar score. We looked up the current price of each PSU on popular online shops and used those prices and all relative performance numbers to calculate the index. Note that all of the numbers in the following graphs are normalized by the rated power of each unit.
The Gold SF600 unit achieves a higher performance per buck compared to its Platinum sibling. So if you are not interested in having the highest possible efficiency, you could spend less and get the plain SF600 which features high performance as well, but it is not as silent as the high-end model.
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 noise difference between the Gold and the Platinum SF600 models is chaotic. This doesn't mean that the SF600 Gold is noisy, quite the opposite we could say but only under normal operating conditions. Once you push hard its minor rails the fan profile gets too aggressive, with the semi-passive operation lasting for a very short period.
Efficiency Rating
The following graph shows the PSU's average efficiency throughout its operating range, with an ambient temperature close to 30°C.
SilverStone's passive unit shows its teeth here, however it is easier for it to achieve higher efficiency since it has 150W less and it doesn't employ a cooling fan, which also consumes a (small) amount of power. The SF600 Platinum fares pretty well, achieving the third place in this long list.
