I've had my trusty enermax 550W psu with 36A on single 12V rail for about 6 or 7 years which has powered all my computers right up to my current build in sig even though it has no pci-e power connectors. I wont lie.. its daisy chain galore but it works...
Anyway I recently sold my 4890 and picked up a 4870x2 for pretty much no extra cost and wedged it into my system to see if my PSU could handle it, only to be greeted with the middle finger. The motherboard (ip35-pro) refused to post giving me error code 8.2. - check power supply. Thankfully putting the 4890 back in made everything ok again which I guess means I need a power supply with more juice.
I've had a look around and read a few reviews and the XFX Core Pro range is what has caught my eye with the 750W coming in at £60 and getting good reviews.
I know that its a rule not to cheap out on a power supply, but is pretty much my limit.
Can anyone suggest any alternatives?