Roundup: 12 Gaming Power Supplies Compared

By TG Publishing Team, Patrick Afschar
published

Gamers demand a lot from their computers, starting with the PSU. Therefore, almost every PSU manufacturer sells products optimized for gaming PCs. We introduce ripple and noise testing in this roundup to further improve our power supply evaluations.

OCZ Fatal1ty 750 W: Results

Efficiency meets 80 PLUS specifications:

Efficiency under different load profiles:

In our test lab, the OCZ Fatal1ty just barely misses the values required for its 80 PLUS Bronze certification. Under full load, it only reaches 80% efficiency instead of the required 82%. Additionally, under a 25 W load it only reaches an efficiency of 62% and is thus among the worst in this roundup at this particular test.

Except for the short hold-up time, which is how long the PSU can deliver stable voltages in case of power grid spikes or voltage drops, the OCZ Fatal1ty sails through the other tests without difficulty, including the ripple and noise measurements. All values are within the specifications.

The OCZ Fatal1ty lacks nothing that you would expect from a gaming PSU. The electrical quality is generally high, but shows some weaknesses in efficiency. The bottom line is that this is a reasonable unit for gamers on a budget willing to budge a little on the specs.

TG Publishing Team
103 Comments Comment from the forums
  • FLanighan
    Why not Corsair? I jizz at my tx850w :)
    Reply
  • xxsk8er101xx
    Because it failed a few of the tests.

    FLanighanWhy not Corsair? I jizz at my tx850w
    Reply
  • p1n3apqlexpr3ss
    Corsair has a gamer series... whyd they test one of the units from the top line aimed more at enthusiasts?
    Reply
  • V8VENOM
    Odd, why isn't Silverstone reviewed at all? Most of the power supplies they looked at are junk for anyone with more than one GPU and overclocking. I dumped my PC Power & Cooling 1000 Watt PSU because it couldn't handle two ATI 5870's and overclocked CPU to 4Ghz with 1600 FSB. I put in a Silverstone 1500Watt PSU and my system has been rock solid ever since.

    The article doesn't appear to measure noise from during switching and how much noise is introduced to the CPU and bus.

    Anyway, it will be a cold day in hell before anyone gets me to switch out my Silverstone 1500 Watt PSU.
    Reply
  • scook9
    V8VENOMOdd, why isn't Silverstone reviewed at all? Most of the power supplies they looked at are junk for anyone with more than one GPU and overclocking. I dumped my PC Power & Cooling 1000 Watt PSU because it couldn't handle two ATI 5870's and overclocked CPU to 4Ghz with 1600 FSB. I put in a Silverstone 1500Watt PSU and my system has been rock solid ever since.The article doesn't appear to measure noise from during switching and how much noise is introduced to the CPU and bus.Anyway, it will be a cold day in hell before anyone gets me to switch out my Silverstone 1500 Watt PSU.You are either lying or very unlucky (got a bad PSU)......I have crossfire 5870s and an i7 965 and all stock cannot exceed 650W at the wall (about 550W actually used) no matter what I try.
    Reply
  • JamesSneed
    Nice tests but I came to a different conclusion. The seasonic X-750 is close to the most effiecent in the bunch and did you see that voltage ripple it looked like it was flat lining.
    Reply
  • boiler1990
    For the ~$20 price difference between the Corsair 850HX and the AX850, I think I'll get the AX. It never hurts to invest in a great PSU :)
    Reply
  • juuh
    V8VENOMOdd, why isn't Silverstone reviewed at all? Most of the power supplies they looked at are junk for anyone with more than one GPU and overclocking. I dumped my PC Power & Cooling 1000 Watt PSU because it couldn't handle two ATI 5870's and overclocked CPU to 4Ghz with 1600 FSB. I put in a Silverstone 1500Watt PSU and my system has been rock solid ever since.The article doesn't appear to measure noise from during switching and how much noise is introduced to the CPU and bus.Anyway, it will be a cold day in hell before anyone gets me to switch out my Silverstone 1500 Watt PSU.
    I call BS. I could run your setup with my PC power & cooling 750w unit.
    http://www.techspot.com/review/289-geforce-gtx-480-sli-versus-radeon-5870-crossfire/page9.html
    Reply
  • vanhalen
    No recommendation for the Seasonic? Am I missing something?
    Reply
  • random1283
    agreed no reccomendation for an x series seasonic, you guys must be mssing something, every other review of the x series said that they are simply amazing much better then any nxzt or anything.
    Reply