On 9 Jul 98 at 13:44, Robert Hale wrote: > Does anyone know if the Intel BX chipset has the limitation of > being able to only cache the first 64mb of RAM or will it cache > upto 128mb RAM? In Pentium II (and Pentium Pro) systems, any L2 caching is done by the CPU package, and not by the chipset. To date, most PIIs[*] include 512K of L2 cache, and the cache can span either 1 GB or 4 GB. 4 GB is the full physical address space of the CPU, and 1 GB is the most memory you can physically install on high-end commercial motherboards. [*] Current versions of Celeron have NO L2 cache. I haven't checked out Xeon yet. The issue you're concerned about applies only to some Pentium (Socket 7, so includes AMD and Cyrix) chipsets. David G