- Jet Lockheed
- |
- Intrepid Member
Posted by: THE SALTY CHIP
Posted by: Jet Lockheed
Posted by: THE SALTY CHIP
Wait a minute, are those four 7990s?...
There's now way you can power all of those, it should be impossible. Just one of those cards draws at least 400W.
Uhh no
When you calculate the initial power taken from a GPU you factor in all the other parts
1 GPU could be about 650 watts
But that also powers the processor, hard drive, ram, etc
Adding another could be probably another 200-300 watts
So then you would only need about 800-900
You can also downclock them
If you add another 400-600 watts, that would only be 1200-1400 watts
They sell 2000 watt PSUs you knowI'm not sure where you're getting these numbers. The GPU doesn't power the whole system, the CPU does. The GPU just processes the graphics since that's what the GPU was built for. To power not only the main board, CPU, water cooling radiators and the fact that each of those 4 graphics cards takes three 8-pin connectors, you would likely need two 1000W or 1200W PSUs.
Even if it didn't take more than 2000W, there still aren't any power supplies with more than like, 6 8-pin connectors at the most. Let alone 12 of them.
I worded it badly
a setup with 1 GPU would be about 650 watts for this card
Most set-ups like this are probably paired with 1000 watts and 400 watts, total 1400, or whatever else combination you want to do
Some full cases have 2 PSU mounts for 4-way crossfire/SLI
Ones even larger than that are probably not for consumer use
[Edited on 12.09.2012 6:50 AM PST]