quick question on psu wall draw

[black3000gt]

I have an xfx pro850 psu. Max power rating is 850w. It is drawing 892w according to my watt meter. PSU is 80+ gold. Am i pushing it too hard? I have it running 2 Ant s1's clocked to 200gh. Thanks.

[philipma1957]

I have an xfx pro850 psu. Max power rating is 850w. It is drawing 892w according to my watt meter. PSU is 80+ gold. Am i pushing it too hard? I have it running 2 Ant s1's clocked to 200gh. Thanks.

yes you are pushing it more then you should are you using freq 400 or 393    .  if you are using 400 change to 393.

if you are using 393 change to 387 or 375



https://bitcointalk.org/index.php?topic=589429.0


this thread has plug in values for 393 387 and 375

try them until you power draw drops under 825

[bitgeek]

As far as I know the power taken from the wall will always be a bit higher than what's used by the components. The PSU loses a bit in the conversion so you're close to its limit.

If you have 850W PSU its the peak power, so it won't  go past it.

[philipma1957]

As far as I know the power taken from the wall will always be a bit higher than what's used by the components. The PSU loses a bit in the conversion so you're close to its limit.

If you have 850W PSU its the peak power, so it won't  go past it.

yeah but he runs it 24/7/365   so an 850 watt doing 892 watts is running at  more then 80% of max power.   

850 divide by 85 percent  ( a gold is around 85 percent  efficient near max draw. )

  is   1000  watts at the wall,  so his psu maxed is about 1000 watts at the wall… 

 he is doing 892 watts at the wall  892 watts is 89.2 percent of max at the wall.

  he should not exceed 80 percent if he wants to run 24/7/365

so my guess is   800-825 at the wall is better for him then 892.

Mind you the oem rating is 850 watts  no telling how accurate that is.  but if it is  a true number he is beyond long term safety rating….

[Glizlack]

Philipma is correct depending on if you want to be conservative or more aggressive most people prefer to go no higher than 75 to 80% power draw. Example for what your drawing some people would be uncomfortable even with 1000w psu.

How hot is your psu getting is the fan always at full speed? Another comparison would be if your car can drive 150 mph how long do you think it would last if thats the only speed you drove?

Most psu in the manual will tell you what it rated at continuous as well.

Steve

ps the xfx pro is a rebranded Seasonic i believe so if any 850w power supply would be ok it would be a Seasonic.