intel turbo memory is a sort of ready boost and ready drive that works in conjuction with windows vista ONLY. it basically works by caching frequently accessed programs into the cache memory and push them to RAM at no access time latency. most of us are familiar with the use of usb thumb drive to perform ready boost, which is fine, but external usb drive cached files are discarded every time your pc reboots because the content are considered volatile. built in hardware ready drive solved this issue.
for dell owners, it will show up as Flash Cache Modules (FCM) for intel turbo memory.
nothing can come close to pure RAM performance. intel turbo memory is a method used when memory is not abundantly available and the main purpose is to sit in the middle between the slow hard drive and super fast RAM. because flash memory does not suffer from seek time latency, it is therefore theoretically faster than HDD.
that said, the more RAM you have, the less benefit you'll see from having intel turbo memory and vice versa. for example, there is a tremendous increase in computing performance when using FCM with 512MB or 1GB RAM. for 2GB RAM, the performance increase is less than 512 and 1GB, but still there are some improvement. 3GB RAM onwards see very little benefit from using FCM.
in other words, im trying to squeeze as much juice as i can from my inspiron 1520. hope this info helps.
Thanks for the info. now i know already.