Datamem seems to be really inexpensive. I am seriously considering putting another 2GB into my system. 2GB Kit (2 x 1GB) FB DDR2-667 (PC2-5300) 128x72 CL5 1.8v 240 Pin ECC FBDIMM It's only $390.00. Is it quality memory? Are the heatsinks big enough? Here's a picture of it, for all who are wondering.. It seems to be ok, and I've heard that it's quality ram, but I'd like to get some more feedback before I buy. mac pro still says shipping by the 19th. =( It will at least give me time to get the extra memory. Thanks!