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Would a 40A 520W power supply (Seasonic) be adequate for a GTX580, STOCK?

post #1 of 12
Thread Starter 
I am interested in picking up a GTX 580, but I am wondering if my power supply can handle it. I know that this will be a tough load to cope with, but considering the PSU in question is extremely high quality, and has 40A on the 12V rail, I was wondering if it is possible. Rig in question is my sig rig.
    
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post #2 of 12
According to guru3d, it would be cutting it extremely close. On full load, their entire system tops out at 477w. Still they recommend 650w min.

Considering the OC on your CPU I'd consider upgrading.
post #3 of 12
well, according to this
http://www.bit-tech.net/hardware/graphics/2010/11/09/nvidia-geforce-gtx-580-review/8
it draws 368 watts peak which is about 30-31 amps. you cpu probably pulls about 120-150watt which is about another 10-13 amp..

well lets say, if you dont load it it will run. not recommended though.

these are my opinions.
    
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post #4 of 12
Thread Starter 
hmmmm... I don't feel like risking my hardware... how about a GTX 570?
    
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post #5 of 12
Manufacturers recommend 600w 42a for GTX 580 and 550w 38a for GTX 570.
GTX 580
http://www.pccasegear.com/index.php?main_page=product_info&cPath=193_1170&products_id=16007
GTX 570
http://www.pccasegear.com/index.php?main_page=product_info&cPath=193_1177&products_id=16311

You could probably get away with it with no OCing CPU or GPU.
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post #6 of 12
GTX580 is a 240w GPU. 950 at 4.4G draws about 200w alone already. That Seasonic unit is a good unit but it is really on edge now. It can do more than its specs so I think it may make a cut if you scale down 950 a bit but it is a bad idea to have psu at full load all time. Since you have 20" lcd, maybe just get gtx560 (170w) or sell your PSU and pay the different to get a 'bigger' PSU.
post #7 of 12
Quote:
Originally Posted by linskingdom;12197068 
GTX580 is a 240w GPU. 950 at 4.4G draws about 200w alone already. That Seasonic unit is a good unit but it is really on edge now. It can do more than its specs so I think it may make a cut if you scale down 950 a bit but it is a bad idea to have psu at full load all time. Since you have 20" lcd, maybe just get gtx560 (170w) or sell your PSU and pay the different to get a 'bigger' PSU.

Oh I didn't even notice his screen. That's 1600x900 right?

Good advice here. A 580 is overkill at that res. A 560 would be a wiser investment imo and requires much less power.
post #8 of 12
I have Q9550 @ 3.9GHz and GTX480 @ 850/1025MHz w/1075mV and I'm running it on CM Real Power M620W that has 43A combined for 12+ rail (3x 12+ rails @ 19A each)..

I have trown everything on it from Furmark 20 minutes to Crysis benchmark 60 runs with OC'd GTX480 @ 850/1025MHz and it holds it like champ..

So your PSU should manage to feed that system with GTX580 @ STOCK for sure if it's 80+ certificated PSU and really has that amperage..

CHEERS..
     
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post #9 of 12
Thread Starter 
I'm moving up to a 32 inch LED TV, which is why I'm scaling up.

GTX 570, yea or nay?
    
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post #10 of 12
Quote:
Originally Posted by roflolol;12197413 
I'm moving up to a 32 inch LED TV, which is why I'm scaling up.

GTX 570, yea or nay?

Yeah GTX570 is a great choice also and it's about fast as STOCK GTX480,runs cooler with less noise and uses less power..

CHEERS..
     
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