Thinking on upgrading

[Tythus]

I am thinking on upgrading from my GTX 295 to 2xGTX580's and was wondering if my rig could take it.

I have an antec 902 with a 750W corsair powersupply.
It is supplying the following components with juice already.
GTX295
i7920@4ghz Using a noctua D14
3 Sticks of corsair ddr3 2GB 1600Mhz (might up these to 4GB sticks but I doubt that will impact on power usage much)
5 HDD
1 Blu-ray reader

I'm thinking on using these.

 

[Tythus]

I think your PSU might be able to get away with it but it's safer to go with a 1000w PSU as the 580 SLi is pretty power hungry. How about upgrading to one 580 first and see how it goes?

Nah I cant its really all or nothing as I know I'm not going to gain much performance over my current 295 with just one.