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Will this PSU work with my gtx 680?

Last response: in Graphics & Displays
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March 24, 2012 5:22:52 PM

I know the minimum power for this card is 550w, but what is the recommended? Will my 750w Corsair TX 750 be sufficent? I also must admit I don't fully understand the amp requirement. Though efficent will this card cause heat issues with my CPU (i5 2500 k) Thanks for any feedback!

More about : psu work gtx 680

a b Î Nvidia
March 24, 2012 6:03:27 PM

You could run two 680's with that power supply, you're for sure good with one!
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a b Î Nvidia
March 24, 2012 6:16:38 PM

Good choice, it's a quality PSU with plenty of power for a GTX680.
No, the current GTX680 cards all exhaust their heat out of the case through a grille in the back of the card.
To get the best out of the GTX680 I'd suggest you install a better cooler and overclock the i5. Even an inexpensive aftermarket cooler will allow you to push that CPU to 3.4 GHz without things getting either too hot or noisy.
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a b Î Nvidia
March 24, 2012 6:22:29 PM

The above poster probably meant 4.4 GHz btw ;) 
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a b Î Nvidia
March 24, 2012 6:44:56 PM

trogdor796 said:
You could run two 680's with that power supply, you're for sure good with one!


Two points:
1) I read that the GTX680 required 38Amps on the +12V rail. You may wish to check with one of the manufacturers such as Gigabyte or Asus.

2) The cards can also be overclocked (beyond the GPU boost). That requires additional Amps.

3) The Corsair TX 750W supplies 60Amps on the +12V rail. Plenty for a single GTX680 overclocked but not enough for two, if the source was correct.

I'm only buying one card so I can't be bothered to check.

*Unless you plan on running SLI there's no point in getting two GTX680's as a single card will max out any game on the market.
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a b Î Nvidia
March 24, 2012 6:47:35 PM

Sunius: No, you'll need something more than an inexpensive cooler to push to 4.4GHz.
My Hyper 212+ is OK at 3.4 GHz (i5 750 Lynnfield) but any more an I'll have to turn the fan up a little more, and my rig was built for quiet speed, on a tight budget :( 
But, that said the OP does have the 'K' variant with its unlocked multiplier... :) 
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a b Î Nvidia
March 25, 2012 4:54:52 AM

photonboy: As far as I understand it, the 38amp requirement does not mean the 680 will use up 38 amps all by itself, just like the 550W does not mean the card it self needs 550W. If I am wrong about this, someone please correct me. I understand about only getting one, I was just throwing that out there. No point in getting 2 IMO, unless you run triple monitor setup AND 3D and want to max out BF3. Not worth it IMO lol.

coozie7: the i5 2500k overclocks like a monster. Mine, being cooled by a Hyper 212+, runs at 4.4Ghz, and never goes past 50C. Most of the time it's in the 40's. Idles mid-20's. Room temp is ~70F.
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a c 75 Î Nvidia
March 25, 2012 5:22:02 AM

4.4 - 4.5 GHz - Hyper 212
4.6 - 4.7 Ghs - Hyper 612 or Scythe Mugen 3
4.8 - 5.0 Ghz - Phanteks PH-TC14PE or Thermlright Silver Arrow

http://www.geforce.com/hardware/desktop-gpus/geforce-gt...
195 WMaximum Graphics Card Power (W)
550 WMinimum System Power Requirement (W)4

550 + 195 = 745 watts is therefore nVidia's recommendation

If OC'ing , two cards and the CPU, I'd do 850

195 / 12 volts = 16.25 amps (non OC'd)
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a b Î Nvidia
March 25, 2012 11:04:40 AM

coozie7 said:
Sunius: No, you'll need something more than an inexpensive cooler to push to 4.4GHz.
My Hyper 212+ is OK at 3.4 GHz (i5 750 Lynnfield) but any more an I'll have to turn the fan up a little more, and my rig was built for quiet speed, on a tight budget :( 
But, that said the OP does have the 'K' variant with its unlocked multiplier... :) 


I use scythe Katana III, which is ~$30. My i5 2500k easily reached 4.3 GHz with it. Also I had successful overclock to 4.8 GHz, but I dropped it down because the temps were a bit high (up to 80C with prime95). At 4.3 GHz, it doesn't go above 70C with prime95. Idles at 30-35C, and while gaming/doing intensive tasks doesn't go above 60C.
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a b Î Nvidia
March 25, 2012 12:17:50 PM

Nice results Sunius.
It'll depend on Arbegust, though, not everyone is happy to overclock and I've always been nervous about it myself, hence the low numbers.
But, the point is made, if the OP wishes, he/she can OC without breaking the bank or needing to upgrade the PSU, although at that resolution with a GTX680, I doubt it'll be needed :) 
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