Two 6 pin PCI-E for HD 2900XT

[Lane-k]

For begin... yur PSU should be enough... at the moment you don't try get a bench period with HIGH CPU and high OC on your GPU ( when i say High.. it's around 3.6-3.8ghz with a QX and HIgh OC on your GPU). all should be fine.. ( my Enermax is 620W . 2x12V rails @ 22A...) ... If then you see the PSU limit your OC.. buy a more powerful... like i have say higher.. a powerful PSU is allways a good way where put some money if you will high OC on your system.