Just upgraded my Mac 4,1 (firmware updated to 5,1) and put in my X5670 CPU. Everything went great (single CPU Mac, btw). After everything came up and looked good, I shut down and removed the original RAM (1066 ECC). I popped in 4 x 4GB PC312800 (DDR3-1600) modules. Turned on and system started but shows 1066 still. I reset the PRAM, but since I have a non-Mac Graphics card, I can only go by what I hear. I turn it on, then press the OPT-CMD-P-R and hold it down. I hear the first BONG. Then, about 30 seconds or so, a second BONG and I release the keys. System comes back up, but still 1066. I don't see that anything reset, per se...is there a way to tell if the PRAM reset? What is some decent 8GB DDR3-1333 modules that people are using?