Well NCIX is having a sale and their selling this 700W OCZ psu for only 64$, is this good enough to run SLI GTX 460s?
http://ncix.com/products/index.php?sku=35456&vpn=OCZ700MXSP&manufacture=OCZ%20Technology&promoid=1223
http://ncix.com/products/index.php?sku=35456&vpn=OCZ700MXSP&manufacture=OCZ%20Technology&promoid=1223