The linked dimms have 43% lower bandwidth than what Apple has specced (PC1866 vs PC1066) and are over twice the $ per GB.

wait a few months.

I can't think of a single app that's RAM-speed-bound.

Pretty much everything is CPU- or GPU- or disk-bound.

Memory performance is a big problem. http://www.theinquirer.net/inquirer/news/2158184/intel-memor...

(this is possibly why they opted to go for a chipset that supports 4 channels and only include 4 slots; 1 slot per channel)

If that were the case, we wouldn't have multi-level CPU caches and we really wouldn't care about misses stalling the processor.

Everything is RAM speed bound when it comes to CPU and GPU.