Power Supply enough for gtx 680

[davey_63]

Hi guys, I'm running a 730 Watt power supply "http://www.newegg.com/Product/Product.aspx?Item=N82E16817152036&Tpk=raidmax%20730w"

I know it's a pretty sketchy power supply already, but do you think this would be able to run a single 680. I read the 680 requires 38amps and my power supply has 2 12v 24amp rails I'm wondering if this is sufficient... thank you

 

[stchman]

I would go with a 750 watt minimum modular power supply with at least a 50 amp 12V rail.

This one is fully modular with a 62A 12V rail. The GTX 680 is a POWER HUNGRY beast.

http://www.amazon.com/OCZ-Series-Fully-Modular-Performance-compatible/dp/tech-data/B005SCYFRE/ref=de_a_smtd

 

[Someone Somewhere]

It should be enough as the PSU states it has 741W total on the rails, and the amount of power is about half again what you need, but it doesn't have APFC (which while not a major problem on it's own is a bad sign) or any form of 80PLUS testing. I can't find any reviews on it either.

There are better cards out there for the money eg http://us.ncix.com/products/?sku=75186&vpn=GV-R797TO-3GD&manufacture=Gigabyte which should be cheaper than any GTX 680 and perform similarly too. GCN also OCs very well and destroys Kepler at high resolutions.

 

[davey_63]

So this power supply won't run a single 680? or....

 

[davey_63]

or can I power the card from both rails and be fine?

 

[Someone Somewhere]

I just noticed something - 48A (the maximum you could draw from the 2 24A rails total at 12V is 576W. That probably isn't enough for a 680 and decent CPU. Get a 7970 (non-GHz) and a decent 600W PSU.

Edit: If you tell me your budget i'll find you a PSU+GPU.

 

[mouse24]

Honestly with a GOOD 700w psu you have enough power to run 3 680s

http://www.guru3d.com/articles_pages/geforce_gtx_680_review,9.html

Yours however to put it bluntly a horrid PoS. I would replace it, even a 500w model is more than enough for a 680 + any cpu. Since you have the cash for a 680 you really should replace it man. You could also drop down to a 670, overclock that, then spend your savings on a psu if you absolutely have to stay in budget.

170w x 3 = 310w + 190w (lets assume heavily OC'ed i5 3570k) and thats only at 400w. (lets then assume +50w for drives and fans.)

Edit: according to qbsinfos benchmark link it appears a 700w might not have enough power to run 3x 680s but you get my drift nonetheless.

 

[davey_63]

I just noticed something - 48A (the maximum you could draw from the 2 24A rails total at 12V is 576W. That probably isn't enough for a 680 and decent CPU. Get a 7970 (non-GHz) and a decent 600W PSU.

Edit: If you tell me your budget i'll find you a PSU+GPU.

I'm running an i5 2500 if that helps anything

 

[qbsinfo]

a reference 680 needs 228 watts (which is slightly less than a "non Ghz" 7970 btw)
http://www.techpowerup.com/reviews/KFA2/GTX_680_Limited_OC/26.html
so 20 amps (which is 12V2 on that PSU) for that and over estimating 15 amps for your system (which is 12V1 on that PSU)

but that raidmax . . .something wrong with powering a high end card with a $60 PSU smells like fail . . .

 

[davey_63]

Yea I think I'm just going to grab an upgrade power supply, before I get the 680 xD probably http://www.newegg.com/Product/Product.aspx?Item=N82E16817139021&name=Power-Supplies

 

[davey_63]

a reference 680 needs 228 watts (which is slightly less than a "non Ghz" 7970 btw)
http://www.techpowerup.com/reviews/KFA2/GTX_680_Limited_OC/26.html
so 20 amps (which is 12V2 on that PSU) for that and over estimating 15 amps for your system (which is 12V1 on that PSU)

but that raidmax . . .something wrong with powering a high end card with a $60 PSU smells like fail . . .

I just want to know if thing would run stable at all on the raidmax, till I got a new psu

 

[Someone Somewhere]

Yes. I wouldn't trust anything with that brand name on it to deliver the rated wattage.
I suggest:
CX600V2 - $60 http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028
HD7970 - $400 + $20 rebate http://www.newegg.com/Product/Product.aspx?Item=N82E16814102982

While that may also be a $60 PSU I would trust it to deliver more power than the Raidmax..

EDIT: Missed OP's last two posts. The TX750 should run two 680s (or 7970s) ok, or you can save dosh and get the CX600V2 I linked.

You might be able to run stably on the Raidmax, but I wouldn't do any OCing, and if you had too many HDDs or fans it could kill it. No stress tests either.

 

[davey_63]

I know it's a crappy power supply, but it's done a pretty good job of running my 2 6870s XD

 

[davey_63]

Alright I'll get a new power supply, before I grab the 680 thank you guys

 

[Someone Somewhere]

I'd say run it until you have enough to replace it, but do it quickly.

A 670 is a lot cheaper than the 680 and performs almost as well. You could get one of those (and a PSU) instead.

 

[davey_63]

The reason I'm headset on either a 680 or a 7970 is because I plan on buying a 2560x1440 monitor soon as well

 

[davey_63]

Best answer selected by davey_63.

 

[Someone Somewhere]

If you're going for that resolution you should get a 7970 as the extra memory bandwidth will make a big difference.

Also the reason I said you could run it for a while was that if it can run two 6870s it's only utter rubbish, not complete & utter explosive rubbish

 

[davey_63]

If you're going for that resolution you should get a 7970 as the extra memory bandwidth will make a big difference.

Also the reason I said you could run it for a while was that if it can run two 6870s it's only utter rubbish, not complete & utter explosive rubbish

Got the 750 watt corsair it's all hooked up and everything no more utter rubbish power supply ^^