In building my first computer I've come across and narrowed down my GPU choices (I think). I'm not a gamer but want Nvidia for CUDA as I do BOINC and also for watching videos and very rarely encoding videos.
So here you go,
124.99 after rebate
EVGA 01G-P3-1158-TR GeForce GTS 250 1GB 256-bitDDR3 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card