OK. i need your help guys and gals.
My graphics card has over heated and burn out

(nVidia Geforce FX5200)(it DID' NT have a HEAT SINK) and i have had to go back to my built-in 32mb shared graphics card (i know it REALLY SUCKS).
But this is where u come in to help.
Which kind of card would u say is better ?
nVidia or ATI Radeon
Thxs for any info
( and i know i should of got 1 with a heat sink, i wont make that mistake again ! )