Seasonic Releases Information On Its Haswell-Ready Power Supplies

Subject: General Tech, Cases and Cooling | May 11, 2013 - 06:17 PM |
Tagged: seasonic, haswell, Power Supplies, PSU, 0.05A

Following the announcements from other power supply manufacturers, Seasonic has now released a list of its own power supplies that are compatible with Intel's upcoming Haswell processor. The new Haswell CPUs, set to launch June 3rd, incorporate new C6 and C7 sleep states that draw as little as 0.05A from the 12V PSU rail. Because of the low load, some existing power supplies will have issues with the new sleep states and could result in system instability. In light of that, many manufacturers are validating their existing lineups to determine which ones are compatible.

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As of the time of publication, the following power supplies from Seasonic are compatible with Haswell and the new sleep states.

Platinum Series

  • 1200W
  • 1000W
  • 860W
  • 760W

Platinum Fanless Series

  • 520W
  • 460W
  • 400W

X-Series

  • 1250W
  • 1050W
  • 850W
  • 750W
  • 650W

G-Series

  • 650W
  • 550W
  • 450W
  • 360W

M12 II Evo Edition Series

  • 850W
  • 750W

Stay tuned to PC Perspective for more information on PSU and Haswell compatibility.

May 13, 2013 | 03:16 AM - Posted by psuedonymous (not verified)

It's important to note that if you disable these new low-power states (C6/C7) in BIOS/UEFI, then there is no compatibility issue whatsoever with existing power supplies, and the only penalty is that your idle power is on the order of ~10W rather than ~100mW.

May 13, 2013 | 04:22 PM - Posted by Tim Verry

That's correct.

May 21, 2013 | 03:11 PM - Posted by Anonymous (not verified)

Seasonic Platinum 1200!! Go on.............!

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