A friend of mine recently bought an i7 barebone from trigerdirect for only $769can. The barbone came with an i7 920, evga x58 sli mobo, 6gb ddr3 ram at 1333mhz, 1tb sata 3 hdd, 750 watt ps, and a decent case. Depending on your budget I would consider buy a barebone like this and using your old gfx card in it.
It's hard to say whether the phenom, i5, or i7 is the best deal, but my decision would probably be the i7.
link to the barebone kit
It's hard to say whether the phenom, i5, or i7 is the best deal, but my decision would probably be the i7.
link to the barebone kit