my ti4600 has packed in!!! 8(

Hello

Came home from work yesterday to find my desktop was corrupt so i re boots
the machine and i find i got all horizontal lines down the screen i try the
graphics card in another machine and it has the same problem The card is
a Gainward Geforce 4 ti4600 750/gxp golden sample which i have had clocked
at 320/700 for over a year with no probs i don't think overclocking has
caused this cause its got major cooling components like ram sinks etc... on
it. Looks like now i got to go out and purchase a new graphics card so i
thought i would seek some advice. What would be a good upgrade to a ti4600
with best price/performance ratio i don't have mega amounts of money to
spend so like the high end cards are a no no i was thinking of the FX5700
ultra.

Anyone give me some advice? TIA
-----
Lee.