Upgrading PSU

[SKULLZ1987]

Ma rig is as follows:

Intel Quad Core Q6600
Asus P5N MoBo
4GB RAM (2x Adata 800MHz, 2x Samsung 667MHz)
2x BFG 7900GTX OC 512MB
4x 500GB SATA HDD
2x DVD-RW Drives
1x Floppy Disk Drive
4x Case Fan's
Antec 460watt PSU

I'm looking to upgrade most components but first I need to sort out the power issue with the 2x SLI cards. If I play any game wit intense graphics the PC just shuts down. Very Annoying! Can anyone recommend a decent PSU?

I'm thinking of getting a Thermaltake, BFG or Corsair PSU but I'm unsure of the wattage needed. Checked out http://www.extreme.outervision.com/PSUEngine and apparently I need over a 700watt PSU?! Need to top up my electric bill!

[Monty007]

Yeah the 460watt is to small, what you have picked is perfect.

[Kevin_gibson]

Might sound stupid, but have you checked it's not your graphics card over heating? Again as you've posted, it could be your PSU. But double check it's not a card issue so you're not wasting money buying a PSU for nothing.

[thebanditblog]

I have a similar setup minus 2 of the hard drives and with an amd phenom II quad core and an ati 4850 instead of an intel cpu and an nvidia gpu. I use a thermaltake 850 watt toughpower and I have no complaints what-so-ever. I picked mine up from Best Buy because I was in a pinch and needed a psu right then. But you can get it at newegg for a better price.