Originally posted by Curator
First of all. The 2 meg cache in that P4 Extreme edition is level 3 cache, not level 2. There is a difference. This chip is a waste of money because at most it can only increase performance by 20%, and programs have to be coded to use it. Typically you'll probably see more along the lines of a 10% increase.
As for PCI Express, here's the basic jist. The original PCI operates at 33 mhz and 133 MBps. AGP 8X runs at 66 mhz x 8 which equates to 2133 MBps or 2 GBps. PCI Express will debut at X16 for graphics which offers 133 mhz or 250 MBps per line for a total of 4200 MBps or 4 GBps. You can find out more here.
Doesn't motherboards come with inbuilt L3 cache for the cpu as well?