Review on Crucial 4GB Kit (2GBx2) DDR2 667MHz PC2-5300 CL5 FBDIMM ECC 240pin- CT2KIT25672AF667 / CT2CP25672AF667 by Marc Stewart

I didn't need it anytime soon so I ordered it from Revain. This is excellent quality RAM with a compact design that takes up half the space of the old Apple modules that came with the Mac Pro. They must be swapped in pairs, although for performance it is even better to have 4 blocks of the same capacity (using both blocks for both processors). The module has an adequate heatsink to minimize overheating and is suitable for use in a Mac Pro. Computer. There are several cheaper modules that are advertised without a heatsink and are not recommended for use with the Mac.