Is it true with Haswell CPU you need a haswell ready PSU


  1. Posts : 445
    Windows 7 64 (bit)
       #1

    Is it true with Haswell CPU you need a haswell ready PSU


    I have heard people saying you need a Haswell Ready PSU or are people blowing it out of Proportion

    Reason i ask is i know Jake Sh*& about intel including Haswell
      My Computer


  2. Posts : 24,479
    Windows 7 Ultimate X64 SP1
       #2

    It is true. The Haswell platform introduced two new C states, C6 and C7 which allow the PC to sleep on about 0.05A and the PSU has to be able to recognize it otherwise it will shut down thinking the board has no power at all.
    Most good, well built PSUs are fine. I also disabled all the C states.

    By the way, I don't even know what a C State is.

    Some info.
    http://www.bit-tech.net/news/hardwar.../haswell-psu/1
      My Computer


  3. Posts : 2,973
    Windows 7 Professional 64bit SP1
       #3

    Like Gary said, most well built, decent power supplies support the Haswell architecture. Also, quite a few PSU's that are Haswell compatible will say so in the description. If you need a recommendation, just let us know.
      My Computer


  4. Posts : 445
    Windows 7 64 (bit)
    Thread Starter
       #4

    Good job I checked my psu that's alls I know c state like you I have not got a clue
      My Computer


  5. Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
       #5

    Britton30 said:
    It is true. The Haswell platform introduced two new C states, C6 and C7 which allow the PC to sleep on about 0.05A and the PSU has to be able to recognize it otherwise it will shut down thinking the board has no power at all.
    Most good, well built PSUs are fine. I also disabled all the C states.

    By the way, I don't even know what a C State is.

    Some info.
    Haswell C states raise PSU compatibility fears | bit-tech.net
    Intel ACPI Guide - C/G/S/P states and OCs

    C-States are advanced CPU current lowering technologies. These are configured in the BIOS and are automatically used by the OS.
      My Computer


 

  Related Discussions
Our Sites
Site Links
About Us
Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 22:36.
Find Us