A company called Xtremedata Inc used to make an FPGA coprocessor module that plugged into an x86 socket using AMD hyper transport bus. I thought it was cool enough to do my MASc thesis on some potential applications for it:<p><a href="http:&#x2F;&#x2F;www.hypertransport.org&#x2F;docs&#x2F;wp&#x2F;FPGA_Acceleration_in_HPC_Nov06.pdf" rel="nofollow">http:&#x2F;&#x2F;www.hypertransport.org&#x2F;docs&#x2F;wp&#x2F;FPGA_Acceleration_in_H...</a>