No clue why, but with 192MB test, with 8GB it ran on one system, but no on another (3770K).. Im guessing b/c of the memory mapped for the two GPUs in the 3770K system?
Anyway, here is a 64MB:
Earthdog | Intel | 3770K @ 4500mhz | 752% | 3591 MIPS | 26858 MIPS | 64-bit | XXX