New PSU

Benv

New Member
Right so I bought an XFX HD4890 XXX got it delivered and excitedly installed it in my rig then realised that my psu is a bit naff and can't power it! So i need a new psu with both the 6pin and 8pin PCI-E power cables but I'm on a budget because i spunked all my money on the card, I have found 2 similarly priced (ish) but both very different, which do you suggest? (i've only just started researching psu's so my knowledge is limited!

Corsair 550vx

http://www.dabs.com/products/corsair-memory-550w-vx-psu-4Q0T.html

or (off brand 800w)

http://www.aria.co.uk/Products/Comp...+Arianet+Black+HE+Gaming+PSU+?productId=35821
 
Are either sufficient? looking at it i don't think the aria one has an 8pin pcie. Is the Corsair one powerful enough, at some point i will upgrade my mobo and cpu, also the corsair is a single rail, would a psu with more than one rail be better?
 
the 550w SHOULD work, but the 650 will more suited, especially if you plan on upgrading processors in the future.
 
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