I wouldn't buy anything from Visiontek. They do not honor their lifetime warranty on older cards. My ti4600 died a couple years back, after Visiontek went bankrupt, and taken over by another company. They refuse to honor it. No customer loyalty.
"We are sorry but the warranty on the Nvidia based cards is no longer valid. The company, Visiontek Inc, who manufactured and provided the warranty, went bankrupt 3 years ago. All of their warranties and liabilities were absolved within the bankruptcy. Our company only purchased the rights to the name Visiontek to produce ATI based cards.
Thank you,
Visiontek Tech Support"
...Yeah, thanks a lot.