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PSU quandry

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  • Graphics Cards
  • Graphics
Last response: in Graphics & Displays
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March 6, 2011 3:11:28 PM

Hi guys, new to the forums but avid fan of the site.
Here is my problem. I have a new computer that was pre-built and unfortunately came with a rather bad psu.
specs: AMD X6 1055T 2.8ghz
4GB ddr3 1600
1tb sata hdd
24x dvdrw
HD 5770 GPU
Xtreamegear 700W PSU

Now I want to upgrade the GPU to a 6970 or even a 6950(flashed) but I am not too sure if the 12v rails can handle the load of that gpu.
The specs on the PSU really dont make much sense from a voltage perspective to combines wattage.
Features / Specifications
Features:
• Model No: PSAZ-CP700
• AC Input Voltage: 115/240V
• AC Input Frequency: 50~60Hz
• AC Input Current: 12.5A (RMS) for 115VAC Input
• Output: 8.5A (RMS) for 230VAC Input

Specifications:
AC Input 115V ~ 240V
DC Output +3.3V +5V +12V1 +12V2 -12V +5VSB

700W
Min. Output Current 1.0A 1.0A 0.5A 0.5A 0A 0.1A
Max. Output Current 24A 32A 21A 22A 0.6A 2.0A
Max. Combined Wattage 200W 480W (38A) 7.2W 10W
Max. 700W

So, my big concern is since the CPU is water cooled( I am a noob at that) I dont really want to change the PSU since I have no experience changing wires on a water cooled CPU.

Should I get the 6970 or 6950? Or maybe try my luck at changing the PSU and get a GPU at the same time?
Thanks for any help :) 
:wahoo: 

More about : psu quandry

a c 130 U Graphics card
March 7, 2011 11:44:32 AM

That power supply is definitely suspect, though just going by the specs, either video card 6970 or 6950 should work fine with it.

That being said, because the PSU is not all that great, replace it if you can. It's really one of the easier components to replace.
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March 7, 2011 2:38:41 PM

Thanks for responding Ubercake. I have been looking at the specs as well and I think I should be ok with an ATI card since they use less juice(no 580 for me).
I will definitely look at getting a new PSU but the only think I am a little freaked out about is the water cooling. I have changed alot of PSU before but never a liquid exchange. It is an Asetek 120mm Liquid Cooling System. I am not too sure if it uses a molex, but there is a single wire running to where the heatsink itself is.

Again thanks for your help.
Stormcrow
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a c 130 U Graphics card
March 7, 2011 2:56:11 PM

I actually replaced one of those Asetek units with an H50 (believe me when I tell you the performance is darned near identical).

You're talking about the self-contained liquid cooling Asetek unit? If so, you won't have to remove it. The pump - just above the heatsink - is already plugged into your motherboard. The single wire coming from the heatsink to which you're referring plugs into the motherboard. You can just leave that the way it is. You probably have a single fan on the radiator? Just find out where that fan connects to your current power supply and use the same kind of connection from the new power supply. It's highly likely the radiator fan is using a molex connection. It was on my system.
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