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Brand new gaming PC; unexpectedly poor performance... Please give any advice or help you can. =) - Page 3

post #21 of 29
It sounds like a software problem to me, but to rule out an issue with the cards, do as asked above and try with each card alone separately. Also try and install the latest drivers by first uninstalling, restart and then install the newest drivers.

Also, if you OC you will be fine with 750W for certain. My sig rig barely tips the power meter at over 400W with my 2700K (which uses about the same amount of power as the 3820) and my 7950, with the 7950 overclocked to 1200MHz at 1.3v and the CPU running at 4.5GHz (Both fully loaded with BOINC). Once you take into account the PSU efficiency curve, you are looking at a DC draw of under 400w, my sig rig could run, with a SERIOUS overclock on a good 450w PSU if I wanted. There is no way the OP needs more than 750w. That said, the unit the OP has is not the best PSU going around in that power range, but it shouldn't be the problem.
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post #22 of 29
Quote:
Originally Posted by Bubba Hotepp View Post

If you actually READ what I said quote "if you OC your CPU you need a minimum of 800W". That's erring on the side of caution if he hit's 100% on the GPU's. And that recommendation CAME from PSU Calc with the CPU OC'd and the GPU's STOCK.
"750 watts is enough even with both cards oced"
It is huh? From the same program you just quoted using.....
Stock
700
CPU OC'd
700
CPU stock GPU's OC'd
700
CPU OC'd GPU's OC'd
700
Yep....that looks like no circumstance that ever needs more than 750W to me..hmmmmmm (now it's my turn to roll my eyes)

i ran psu calc myself on this not but 10 mintues ago the cpu at stock both gpus 5 fans 1 hhd and 1 opitcal drive comes to a reccomendation of 750 watts both cards oced comes to 750 still without overvolting its not till u oc the cpu does it recomend 800 and 800 i undertand but 1000 is painfully overkill.also to state that the op is having these preformace errors due to lack of power seems like an off the wall assumption.
Edited by michaelcat41 - 5/1/12 at 1:54am
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post #23 of 29
Quote:
Originally Posted by michaelcat41 View Post

ROFL thats with 40 % or more oc on the cpu! way to fail at an agurment without that 40% cpu oc if you oc BOTH gpus it will still only say 750 watt not to menton i never said it would never go over 750 watt for any reason i said you would NEVER need 1000 thats just sickingingly overkill 800 is on thing and to be on the safe side i arugee its preferable/ but to say that these proformance issues are a psu related problem truthfully is laughable

One thing I will say though, is while he will only really need 750w and it is definitely not his problem. Don't tell anyone who uses a 1000w+ PSU that they won't need it. In my last rig, which is why I have the AX1200, I had my PC drawing over 1200w from the wall. This is something like 1080w DC power. It can be done and people do it, it's just not for everyone.
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post #24 of 29
barring things like overvolting and 40% or higher ocing his power supply is fine
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post #25 of 29
Quote:
Originally Posted by DirektEffekt View Post

One thing I will say though, is while he will only really need 750w and it is definitely not his problem. Don't tell anyone who uses a 1000w+ PSU that they won't need it. In my last rig, which is why I have the AX1200, I had my PC drawing over 1200w from the wall. This is something like 1080w DC power. It can be done and people do it, it's just not for everyone.

im not saying a pc can never draw 1000 watts dont get me wrong i just feel like most people who go out and by 1000 watt psu's are people who dont need to and are just being consertivie i understand why some want the comfort but everyones needs are differnt. And yes with a PC that needed it id be the frist to go and recomend a 1000+ watts and i dont mean any offense to those who use that much power im just sick of the exadurateing that happens over psu's so often on these forms
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post #26 of 29
Quote:
Originally Posted by michaelcat41 View Post

im not saying a pc can never draw 1000 watts dont get me wrong i just feel like most people who go out and by 1000 watt psu's are people who dont need to and are just being consertivie i understand why some want the comfort but everyones needs are differnt. And yes with a PC that needed it id be the frist to go and recomend a 1000+ watts and i dont mean any offense to those who use that much power im just sick of the exadurateing that happens over psu's so often on these forms

And I RARELY ever say someone MIGHT have a need for a 1000W PSU. His rig is far from normal though. Typically someone with that kind of setup rarely stays stock and will probably be doing some serious overclocking. Otherwise there's no point to have it. If he were doing alot of rendering (which is what the SB-E's are perfect for he would have pro GPU's instead of consumer. I could be wrong but his setup screams serious gaming/overclocked.
post #27 of 29
Quote:
Originally Posted by MrThc View Post

Take one of the video cards out, run benchmarks then put the other in and see what results you get. Then put both in, and see if it improves.

This. Don't even run the benchmarks. Just play a game with one in and then the same game with the other in and post the results in terms of FPS. Use the same test as with the 2 in CF. You will instantly know if one of them is broken.
 
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post #28 of 29
Quote:
Originally Posted by Bubba Hotepp View Post

And I RARELY ever say someone MIGHT have a need for a 1000W PSU. His rig is far from normal though. Typically someone with that kind of setup rarely stays stock and will probably be doing some serious overclocking. Otherwise there's no point to have it. If he were doing alot of rendering (which is what the SB-E's are perfect for he would have pro GPU's instead of consumer. I could be wrong but his setup screams serious gaming/overclocked.

he will never need anything more then a 850watt. look at my sig rig, my old i7 pulls a lot of power and my dual gtx470's pull a crazy amount of power. In future mark i'm only pulling 800-850watts from the wall. So really only around 700watts DC. Unless your running two highly overclocked gtx480's I wouldn't worry much about needing 1000watts.
Edited by DzillaXx - 5/1/12 at 4:04am
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post #29 of 29
Quote:
Originally Posted by DzillaXx View Post

he will never need anything more then a 850watt. look at my sig rig, my old i7 pulls a lot of power and my dual gtx470's pull a crazy amount of power. In future mark i'm only pulling 800-850watts from the wall. So really only around 700watts DC. Unless your running two highly overclocked gtx480's I wouldn't worry much about needing 1000watts.

I think we've all agreed that he has enough juice to run everything at stock though, and that it is definitely not the root of his problem, so perhaps it is time to stop talking about that particular topic! thumb.gif
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