i5 4570 haswell PSU compatibility problem

[ZStan]

I build a new rig

i5 4570

Asus z8z-a

Patriot Black Viper 1866 2x4GB

Chieftec BPS 750w c2 PSU (its CWT based PSU) http://www.chieftec.com/power_nitro85II.html CHIEFTEC | NITRO 85+II

Chif BPS is their top line so don`t say crap PSU it cost 110e here also its CWT production so many other brands use same!

There is a problem at power on, the CPU light on mobo lit red and no post, i need to punch the power on/off few times to make it post, each time it managed to post i get bios error, Overclocking failed, default loaded (but i don`t OC and bios is at default) after that system is 100% stable, next restart again no post

Tried disabling C6, C7 did not help, also removing extra GPU, PCI cards, just one memory modul all the same

Then i tested PSU with SB 2500K no issue at all! so Chiftec BPS PSU is fine!

Now i am using OLD LC Hyperion 700w PSU with haswell and all working gr8 for past week!

I plan to buy new PSU but i am confused, looks like there is more to it, not just C6/C7 state but also power on problems with some of the PSU and i duno which one to buy?

[DArce]

There would not be any other requirement than the one that mentioned. You may check the list of power supplies that has been available on the article below or check with your power supply manufacturer directly to check for compatibility tests done from their side:

http://www.tomshardware.com/news/EVGA-PSU-Haswell-C6-C7,23171.html http://www.tomshardware.com/news/EVGA-PSU-Haswell-C6-C7,23171.html

[ZStan]

I know, list is not full, many PSU are not tested, Chieftec Nitro II should use CWT http://www.cwt.com.tw/Product/enus/Product_ThirdShow.aspx?Series=PC%20Power%20Supply&Category=EPS12V%20/%20ATX12V&Model=PUQ%20(B)%20Series ::Channel Well Technology::

which are used by Corsair, prolly Thermateka and many other..... so that mean none of those are non compatible also

Also i have only some Cooler Master, Chieftec and Seasonic PSU available here in Serbia

and look at list from CM??????????? like ALL are compatible

http://www.coolermaster.co.uk/news.php?action=ViewNews&newsletter=2&id=6201 http://www.coolermaster.co.uk/news.php?action=ViewNews&newsletter=2&id=6201

I could bet they did not test their PSU with Haswell and i just mocking intel

[wlick]

How did you get on, did you buy a new PSU? has the problem been resolved?

[ZStan]

Yeah i bought seasonic 750xt3, no problems at all...

[wlick]

Dude thank you for the update! I've had the same problem and tried disabling C6 - C7 etc.. none of it works. I've also found if it goes into sleep I lose the system then also.

I guess Im in the market for a confirmed supported PSU.

Thanks again for the update!