Be Quiet!, Fractal Design & Thermaltake Release List of Haswell Compatible PSUs

[N.Broekhuijsen]

Fractal Design, Thermaltake, and Be Quiet! all release their list of Haswell compatible power supplies.

Be Quiet!, Fractal Design & Thermaltake Release List of Haswell Compatible PSUs : Read more

 

[dietrich1]

haswell's too good for my psu? then i'm too good for haswell. i'm sticking with pentium.

 

[afrobacon]

Would be nice if SeaSonic released something similar.

 

[unknown9122]

Yeah Seasonic only has 1 compatible PSU (if I remember correctly) according to Intel.

 

[Cons29]

seasonic already said that their psu lineup is compatible with haswell.
i've seen their statement like at least 2 weeks ago. can't remember where though

 

[Cons29]

here you go, from Toms as well
http://www.tomshardware.com/news/Seasonic-Haswell-Power-Supply,22544.html

 

[JonnyDough]

Intel hasn't released any formal testing procedure or minimum qualifications.
So just what is "Haswell compatible"?
Seems like marketing fluff to me. Won't a regular 24 pin PSU with the latest standards work fine?

 

[JonnyDough]

Intel hasn't released any formal testing procedure or minimum qualifications.
So just what is "Haswell compatible"?
Seems like marketing fluff to me. Won't a regular 24 pin PSU with the latest standards work fine?

 

[cobra5000]

Looks like bs, to me.

 

[JonnyDough]

Intel hasn't released any formal testing procedure or minimum qualifications.
So just what is "Haswell compatible"?
Seems like marketing fluff to me. Won't a regular 24 pin PSU with the latest standards work fine?

 

[-Jackson]

Umm, what?
What is it new exactly about Haswell that requires "compatible" PSUs?
Edit: Never mind, just read the power states article.

 

[dimar]

Haswell requires the power supply to handle very low power states.

 

[WINTERLORD]

any idea if a real power pro from coolemaster 650watt would handle hasweel? what wou;ld happen if your psu did'nbt handle/like haswell burn your stuff?

 

[invisibilian]

I would be really angry, if they told me that my new corsair TX 750W PSU was not longer compatible with the latest chips from intel.

 

[VirtualMark]

BeQuiet are junk - my top of the line PSU failed after only a few weeks. It put out a high pitched whine. Absolute rubbish, I've never had one fail, let alone in a few days.

 

[Guest]

Intel hasn't released any formal testing procedure or minimum qualifications.
So just what is "Haswell compatible"?
Seems like marketing fluff to me. Won't a regular 24 pin PSU with the latest standards work fine?

There was concern for power supplies supporting the sleep modes for Haswell.

"The new C6/C7 power states on the Haswell-Shark Bay platform will require the system power supply to be able to maintain a minimum current load of 0.05Amps on the CPU exclusive 12V2 rail (0.6W)."

Source

 

[mrjhh]

Intel hasn't released any formal testing procedure or minimum qualifications.
So just what is "Haswell compatible"?
Seems like marketing fluff to me. Won't a regular 24 pin PSU with the latest standards work fine?

I ran into a similar problem a few years ago when I got one of the first Intel processors with an integrated GPU. Without the load of a separate GPU, the PSU wouldn't even stay on for more than a few seconds until I connected an old disk to the power supply, just to add more power usage.

 

[mmculber]

From what I have read it looks like Haswell will support a couple new low power states (see link below) that not all power supplies will support. I'm not sure, however, if that means that your old PS won't work at all or will works but just won't be able to support the features enabled by the C6/C7 low power states. My guess would be the latter. I am hoping that someone can better clarify.
Hopefully the link below helps. Thanks.
http://techreport.com/news/24738/few-psus-support-haswell-c6-c7-low-power-states

 

[Guest]

From what I have read it looks like Haswell will support a couple new low power states (see link below) that not all power supplies will support. I'm not sure, however, if that means that your old PS won't work at all or will works but just won't be able to support the features enabled by the C6/C7 low power states. My guess would be the latter. I am hoping that someone can better clarify.
Hopefully the link below helps. Thanks.
http://techreport.com/news/24738/few-psus-support-haswell-c6-c7-low-power-states

This is the best answer I could find.

"According to Intel's presentation at IDF, the new Haswell processors enter a sleep state called C7 that can drop processor power usage as low as 0.05A. Even if the sleeping CPU is the only load on the +12V rail, most power supplies can handle a load this low. The potential problem comes up when there is still a substantial load on the power supply's non-primary rails (the +3.3V and +5V). If the load on these non-primary rails are above a certain threshold (which varies by PSU), the +12V can go out of spec (voltages greater than +12.6V). If the +12V is out of spec when the motherboard comes out of the sleep state, the PSU's protection may prevent the PSU from running and will cause the power supply to "latch off". This will require the user to cycle the power on their power supply using the power switch on the back of the unit."

Source

 

[mmculber]

This is the best answer I could find.

"According to Intel's presentation at IDF, the new Haswell processors enter a sleep state called C7 that can drop processor power usage as low as 0.05A. Even if the sleeping CPU is the only load on the +12V rail, most power supplies can handle a load this low. The potential problem comes up when there is still a substantial load on the power supply's non-primary rails (the +3.3V and +5V). If the load on these non-primary rails are above a certain threshold (which varies by PSU), the +12V can go out of spec (voltages greater than +12.6V). If the +12V is out of spec when the motherboard comes out of the sleep state, the PSU's protection may prevent the PSU from running and will cause the power supply to "latch off". This will require the user to cycle the power on their power supply using the power switch on the back of the unit."

Source[/quotemsg]

Thanks DJChangsta!

 

[zodiacfml]

bs,indeed. this is not news.

 

[lxgoldsmith]

Shut up and take my money!