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DUAL SLI GTX 580 750watts? - Page 2

post #11 of 30
it will work fine...

i ran my system on a 750 watt until recently
post #12 of 30
Thread Starter 
Quote:
Originally Posted by hodgoes2001 View Post
it will work fine...

i ran my system on a 750 watt until recently
so ur running two gtx 580 on ur 750 psu? did u overclock or is limited to how far u can go
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post #13 of 30
Quote:
Originally Posted by AliceInChains View Post
go to google.com and type psu calculator. One of the first few links should say extreme psu calculator or something like that. This is the psu calculator i have used for a while and would definately recommend it. It has never failed me.
No No no.

Those calculators are very inaccurate

The best thing to do is do your own research For example..

The GTX 580 uses 244 W

The I5 750 uses 95W

Meaning before he even OC he is using 583W

Add another 100W (Mobo HDD FANS)

And he is only using 683W maximum.

He will still have headroom to OC..
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post #14 of 30
It should work as long as you dont run Furmark all day. With one GTX580 OCed 1.138v it hit ~ 550W in some games ~ 500W actual. I have Water Cooling and a Heavy OCed CPU, a lot of HDDs and fans.
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post #15 of 30
Thread Starter 
Quote:
Originally Posted by StuffStuff1 View Post
No No no.

Those calculators are very inaccurate

The best thing to do is do your own research For example..

The GTX 580 uses 244 W

The I5 750 uses 95W

Meaning before he even OC he is using 583W

Add another 100W (Mobo HDD FANS)

And he is only using 683W maximum.

He will still have headroom to OC..
so wut does dat mean haha
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Intel i5 760 @ 3.8GHz ASUS P7P55 LX EVGA GTX 580sc 4gb Corsair Dominator 
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1tb 7200 HDD Win 7 64 bit Asus 27 inch Thermaltake 750 watts 
Case
CM 690 II Advanced 
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post #16 of 30
Quote:
Originally Posted by big220 View Post
so wut does dat mean haha
you can run Furmark, Intel burn test, and HD tune at the same time and still have extra power..
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OCZ Agility 3 Seagate 7200.12 Sony 18X DVD-ROM 48X CD-ROM SATA DVD-ROM Drive Scythe MUGEN-2 SCMG-2000 
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Windows 7 Ultimate Planar SA2311W 3D Monitor Microsoft Keyboard PC Performance & Cooling Silencer 750W 
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post #17 of 30
Thread Starter 
hmmm final answer so yea it works? haha o yea i checked that psu calculator and it asked for around 920 watts hahahaha dam im fuged XD
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CPUMotherboardGraphicsRAM
Intel i5 760 @ 3.8GHz ASUS P7P55 LX EVGA GTX 580sc 4gb Corsair Dominator 
Hard DriveOSMonitorPower
1tb 7200 HDD Win 7 64 bit Asus 27 inch Thermaltake 750 watts 
Case
CM 690 II Advanced 
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My System
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CPUMotherboardGraphicsRAM
Intel i5 760 @ 3.8GHz ASUS P7P55 LX EVGA GTX 580sc 4gb Corsair Dominator 
Hard DriveOSMonitorPower
1tb 7200 HDD Win 7 64 bit Asus 27 inch Thermaltake 750 watts 
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CM 690 II Advanced 
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post #18 of 30
Quote:
Originally Posted by SniperXX View Post
Whoops.

That power supply isnt nvidia sli certified but it should work. What other parts are in your pc?
SLI certification is just marketing. Means nothing.

Quote:
Originally Posted by StuffStuff1 View Post
No No no.

Those calculators are very inaccurate

The best thing to do is do your own research For example..

The GTX 580 uses 244 W

The I5 750 uses 95W

Meaning before he even OC he is using 583W

Add another 100W (Mobo HDD FANS)

And he is only using 683W maximum.

He will still have headroom to OC..
No No no. No way a P55 motherboard + fans + HDD is using 100 watts. A P55 doesn't even have a north bridge(i.e. the most power hungry part of a chipset). They're very power efficient.

On the other hand.. TDP does not equal power usage. http://en.wikipedia.org/wiki/Thermal_design_power

TDP is the amount of heat the cooling system needs to disipate. It does not refer to the amount of power used.

Then, considering his system is already overclocked.. TDP means even less.

tl;dr You're doing it wrong.
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post #19 of 30
Quote:
Originally Posted by big220 View Post
so ur running two gtx 580 on ur 750 psu? did u overclock or is limited to how far u can go
2x480s actually...

which is more power hungry lol

I oced my graphics cards 900/1800/2200 for benching

but 800/1600/2000 for a 24/7 OC

4Ghz CPU speed with 3Ghz Northbridge speed

and it was 100% stable....

I only upgraded due to my mate upgrading his PSU and he sold me hes old PSU cheap
post #20 of 30
Doesnt dual SLI mean 4-Way SLI?
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