When dual Xeon 2.8GHz CPUs aren't fast enough: upgrading a Mac Pro to dual 3.2GHz mon

[HEXUS]

Yup, octo-core processing at its best.

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[TheAnimus]

These 45nm Xeons are just fantastic, got a couple of new calculation servers with these in, and my latest builds have been able to run at well over twice the speed. The memory controller bottleneck problems seam to be less apparent.

What really seams to be the killer now is the latency of the system RAM, try getting hold of ECC 1.6GHZ FSB RAM, even what you can sell your sister to get, has awful latency timings.

[Biscuit]

why does adding ram thats the same as the exsiting ram increase latency?

[warejon9]

Most likely the ram increases latency, as the northbridge can't handle all the data throughput, as its probs bottlenecked by the fact there are two processors communicating over it aswell.