Overclock.net › Forums › Cooling › Water Cooling › Power requirements for a GPU\CPU loop.
New Posts  All Forums:Forum Nav:

Power requirements for a GPU\CPU loop.

post #1 of 7
Thread Starter 
I'm just ball-parking numbers right now, but what kind of power-overheard do I have with regards to a "typical" water-cooling loop covering the GPU and CPU? I imagine two fans for the radiator (maybe four if I'm going dual radiators) and the pump. 12v, 0.5A fans would run me just 25W alone. Would 50W cover it or should I budget more? My current rig is already eating about 600W at load, and while my PSU is rated for 750, I'd rather not spend its limited lifetime at 90% of its output.
post #2 of 7
Quote:
Originally Posted by Konraden View Post

I'm just ball-parking numbers right now, but what kind of power-overheard do I have with regards to a "typical" water-cooling loop covering the GPU and CPU? I imagine two fans for the radiator (maybe four if I'm going dual radiators) and the pump. 12v, 0.5A fans would run me just 25W alone. Would 50W cover it or should I budget more? My current rig is already eating about 600W at load, and while my PSU is rated for 750, I'd rather not spend its limited lifetime at 90% of its output.
What are the components you have now?
Have you tested the wattage or just guessing?
Otherwise if it's a good PSU i presume it should be good for a watercooling loop, maybe a little bigger PSU if it really is using that much power.
post #3 of 7
Thread Starter 
My current build isn't going to be the build I'm going to end up water-cooling. I'm actually thinking (hoping) the power requirements will level-out at the end of the day.

I'm looking right now at the Intel 3770K and a Maximus V Gene. I also currently have a EVGA GTX 570 which is going to carry over to the new build.

Currently it's just an OC'd E8400 C2D with the 570. The i7 is a little bit more power (77W v. 65W). but I'm going to be dumping four of my hard-drives from this rig and putting them in an enclosure, which should save me a bit of power as well. This is really just me phishing for an excuse to buy a new PSU I think, but I'll defer to somoene with water-cooling experience.
post #4 of 7
Dude then that 750 should be absolutely fine, max you'll be using with CPU/GPU is around 250W lol
But it also depends on which power supply it is? is it generic or?
post #5 of 7
Thread Starter 
An entire 250W just for the loop? The 570 uses that on its own plus some. Looking at overheard though. I'm sure the 750 will handle it, just curious the actual draw I should expect.
post #6 of 7
Quote:
Originally Posted by Konraden View Post

An entire 250W just for the loop? The 570 uses that on its own plus some. Looking at overheard though. I'm sure the 750 will handle it, just curious the actual draw I should expect.
You should expect around 400-500W.
post #7 of 7
Quote:
Originally Posted by Konraden View Post

An entire 250W just for the loop? The 570 uses that on its own plus some.

The 570 has two 6-pin PCIe so maximum it can draw is 225W. Rated TDP is 220W, and unless you are running furmark the whole time, or folding 24/7 you're unlikely to be using even that much. So GPU, CPU, motherboard and drives are using less than 350W at load (prime95+furmark). As Socks Keep You Warm suggested, more realistically you are using no more than 250W when gaming.

So this leaves you 400-500W for your pump and 4 fans. Maybe you should look at smaller PSUs not larger smile.gif
Lori Lemaris 023
(21 items)
 
Felicity Harmon
(23 items)
 
Moneypenny
(12 items)
 
  hide details  
Reply
Lori Lemaris 023
(21 items)
 
Felicity Harmon
(23 items)
 
Moneypenny
(12 items)
 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Water Cooling
Overclock.net › Forums › Cooling › Water Cooling › Power requirements for a GPU\CPU loop.