6600 GT AGP out

config: CM ASRock K7S8X DDR333/40 lan AGP8X 39 MS 1 M6376

CPU AMD Athlon XP 2600
1 GB DDR ram
Here's my problem:
my 6600 GT AGP 8X 128 mb just drop me after many hours of play!
I have an AGP board and I would not change my config.
I propose a ATI 3D X CONNECT 1650 to 64 euros
AGP interface
512 MB DDR2 memory
What do you recommend? Thank you

what budget you have max?
if you can put a little more: HD3650 512MB

thank you for your answer but my processor is not just a little?

For new games? What is your screen?

acer 19''1440 x 900

for games I was obliged to be at reasonable parameters