It will probably be ok, however it is not a good PSU. HEC OEM, old old old model, not even 80+ certified. It probably won't murder your GPU or anything, but definitely don't try to load much else on it.
Well, I've got two of them, and had zero issues with them. One is running perfectly fine with two heavy power GPUs, as linked above. For the price I paid for mine, I think they're very hard to beat.
They're still a quality PSU, they're not like the crappy CIT or ACE things that are £20 for a 750W.
haha you say crappy but some of those cheap power supply can be tough as hell iv got an ALPINE 750w and dam its had some abuse iv had it in PC cases where parts have ran over 100C iv had its droped and thrown and iv taken it up to 600w and other than a squeeky fan its still going strong
also op if you pay a bit extra get something like
http://www.scan.co.uk/products/700w-ezcool-ps-08-modular-sli-crossfire-eps-12v-quiet-fan-atx-v23-psu
