Is there such a thing as Power Supply 'incompatibility' - OC-UK RMA PROBLEM

Pallaris

Pallaris

Pallaris

Associate
Joined
30 Apr 2004
Posts
163
Hi,

I recently put an i7/Windows 7 rig together with a Gigabyte-UD5 mobo, Corsair RAM (xms3), Nvidia Quadro and a BeQuiet 650w power supply.

Build was having stability issues @ stock with random rebooting/shutdown/failure from coming out of sleep mode. This was happening pretty much from the off. I posted about it here. After testing I narrowed it down to the PSU which was starting to act up with some horrific screetching noises.

I found people on this forum who had experienced the exact same problem here and here. In one case the PSU ended up blowing up, so hardly a coincidence then, same brand, same PSU unit.

I call up ocuk - the person on the phone seemed to think it was a dead cert faulty unit from the issues I had described, even going as far to say that I should avoid using it cause it could blow up at any time. So he arranged an RMA, at the same time recommending Corsair as the most reliable PSU to get. So I ordered the HX 750w on the same day (roughly the same price).

Since installing the Corsair, i've had zero problems. Not one issue. PC is running like a dream. And the PSU is silent, with a only a slight whirl coming from the PSU fan you'd expect - none of these high pitched squeeling noises that I was getting.

The problem now is OC-UK are saying they've found no fault with the BeQuiet, and that i'm now liable to pay service+vat+shipping back fees. Apparently there could be an 'incompatibility' with the PSU and the rest of my system and thats down to me.

Could this PSU 'incompatibility' really be true? I'd heared of motherboards and certain types of memory and other components not playing well with each other but never heard issues with a standard ATX power supply not being 'compatible', deinitely not a £100+ one.

Please advise, as the PSU i'm being sent back is useless to me.
 
ive never heard of psu incompatibilty (it either connects to your motherboard or doesnt), and 650w should be enough for a system like that.

if you could have, i would have tried the psu in another pc to rule it out, maybe not enough power is been drawn, or not enough at a stable rate.

screeching noises generally means (to me at least) lack of power coming through.
 
Yes, definitely has been an issue in the past. (S939 DFI boards spring to mind as being particularly PSU picky). No comment on whether this is the case with you, but it's not unheard of :)

-Leezer-
 
If a PSU is out of whack, voltages too high or low, this could lead to issues...

Read up on the ATX spec, if it meets this it should be ok.

Also, load test the PSU, I use 12v car bulbs... Q-tec and hiper PSU's do NOT do their rated power, they shut off or blow up instead! :eek: :D

Each car bulb will pull around 5A, so if your'e PSU does 35A on the 12 rail, try loading it with 30A (6 bulbs, wired in parallel), and if this doesn't make it screech, nothing will! :)

Many PSU's are fine with a few hundred watts, but one you get towards their rated power, this is when you see problems (if any).
 
Only "incompatibility" i could think of is if running a very powerful psu on a low power system when the psu requires a minimum load to power up. Other than that i am struggling to think of any reason why a "good, read that as non faulty" psu wouldn't work.

Your system should certainly pull enough load to get most, if not all, psu's running.
 
If i recall correctly there were also problems with Abit IP35 boards and the original coarsair 520 and 620w power supplies.
 
You must log in or register to reply here.
Back
Top Bottom