i am thinking about upgrading my single 5850 to a crossfire set up. my current psu is only a 550w so i think that this is nowhere near enough.(correct me if i am wrong) so i was thinking that i should upgrade the psu as well. i was thinking of a Antec Truepower 850 or 1000w psu is this sutable. and can you give me any other possibilities.
"Coolermaster" are not a good brand (although they are not the worst brand). id say a 700-750w good brand PSU, corsair, antec, silverstone, that will give it plenty of breathing room. The antec truepower 850 is more than enough. I think there is a "truepower NEW", which is the one to get, not the older model.
If your from the UK overclockers UK have got the corsair tx650 for 75 quid, just got it myslef, runs my 5970 perfec so till will easily run ur 5870 crossfired. as dip said above OC it youl need 700-750W.
500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended (600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode).
If overclocking, I'd opt for a Corsair TX-650 and either an Antec EA-650 or TP-650. If doing serious overclocks, I'd opt for the Antec Signature Seasonic X-650 or Corsair HX-650 as a minimum. Check here to see just how much of an Overclosk ya can get away with:
For comparison purposes , the list below contains performance ratings (10 scale) at jonnyguru.com / prices as per newegg on 02/26/2010 and ones w/ double asteris (**) made it onto silentpcreview.com's Editor's Choice List:
Note: Just because you see a brand name on this list, never make the assumption that their other lines are of matching quality. Silverstone for example has other models w/ 6.0 and 7.0 ratings.