Just thought I would share some info, if anyone would like me to post the screenshots I can do but I've got nothing to gain by lying but anyway.
Graphics Card: GTX 295
CPU: AMD Phenom II X4 955 Black Edition @ 3.6GHz (3.8Ghz = add extra 2 fps)
Ram: OCZ Blade Series 6GB (3x2GB) DDR3 PC3-16000 Triple Channel (Tested at various timings using 2x2GB) / OCZ Platinum 4GB (2x2GB) DDR3 PC3-10666C7 1333MHz Dual Channel (SAME RESULTS)
Crysis 1600mhz 7-7-7-24 = 54.98 fps
Crysis 1333mhz 7-7-7-24 = 54.43 fps
Crysis 1333mhz 6-6-6-24 = 54.87 fps
Crysis 1333mhz 9-9-9-24 = 52.98 fps
Conclusion
For gaming you don't need the best ram for AM3 rigs, in terms of FPS performance, spend the extra cash on a better graphics card etc.