Intel 5xx J CPUs and EIST (speedstep)

[jarthel]

A member of an Australian computer forums mentioned that the Intel channel roadmap does not mentioned EIST in the J CPUs.

Also this publicly available page ([L=http://www.intel.com/products/...essor_number/info.htm)]http://www.intel.com/products/processor_number/info.htm)[/L] does not discuss EIST with J CPUs.

Anand's Intel roadmap talks about EDB and EIST for the J CPUs. http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2256

Which is true?

I need to buy a CPU soon and if EIST will be appearing in Q1 05, I'll just get what's available now.

Thanks

 

[markku]

I see in that anand chart, that only prescott-2M cores and dualcores support EIST.
but at least one cpu with E0 stepping definately supports EIST is mobile P4 548 (3.33).
that's the one i'm looking for. but i'm afraid that cpu wont do for you because it's s478...