NVIDIA's GeForce 6200 with TurboCache
 

Cute little boards, interesting technology that might make it
into high-end hardware in the future (what about a 256MB board that can
texture into system memory when needed, saving you the massive cost of a
jump to a 512MB variant?), along with all the attractions of a well
engineered small PCB and passive cooling, mean they're well worth
considering if you're looking for low-cost PCI Express thrills and spills.

Link:
http://www.hexus.net/content/reviews...lld19JRD05NTI=