I can confirm no EIST for any multiplier except 9.

Quote Originally Posted by 6_6_6 View Post
As for EIST, I can confirm that EIST is disabled on 4 x 800. Its setting is no longer in BIOS and software reports it as disabled. F7, F8C, F8D all same results. EIST with 9 x 400 works in BIOS though... Also works for 9 x 333, 9 x 380... This brings me to a question:

Is EIST implemented only with the highest multiplier of a cpu (9 for Q6600) and not available with the intermediary steppings?