Originally Posted by Remonster
AMDs cache has a MUCH lower latency than anything Intel has ever produced, that's straight fact, and I think this has a lot to do with why they can get away with tons less cache (thereby being cheaper, running cooler and possibly overclocking a bit further) having super low latency L1 and L2 cache, and having less L2 but more L1 than Intel counterparts means AMD can make much more efficient use of the cache memory it has.
It has nothing to do with Hyper Transport or the Integrated Memory Controller, those are the reasons why system memory (RAM) is much lower latency on AMD platforms than on Intel platforms but the cache is located on die inside the CPU.
You sure about that its just another factor.
With the HT link providing a much quicker bus speed between RAM and the CPU it means it can contact the RAM much faster and vice versa, so naturally it doesnt need the massive amounts of cache that Intel's do.