I have a 550W power supply, it needs 500W but it just refuses to work.
But, look on the bright side mate – you’ve got an Oculus Rift and most of us dont 😀
I’m *very* glad I future-proofed this PC when I bought it 4yrs ago:
750W ‘gold’ P/S, i7, 16GB RAM.
Upgrades have been SSD and quite recently, the GTX970 – only thing is the mid-tower case means I can’t fit ‘gaming’ GPUs since the HDD mounting brackets will foul it
Since the 970 is ‘below’ the recommended spec for Vive / Commercial Oculus Rift, it might be an excuse to build a new PC with a full tower case
BTW – spewin’ that commerical Vive release is delayed until April – everyone will be all over the Rift
Oi! That's Baron von Schnellenstein to you, mate. No, it doesn't matter that I'm an Imperial Prince!