Quote Originally Posted by denden View Post
as I known before 4c is for quad so I flashed it with using my q6600 and also cannot select the multiplier. In the offical site said 4c is for quad core as well, so you sure 2c is also used for q6600?
When the BIOS first came out in April, the 4C was for Quads and the 2C for dual cores. In the 521 release, they changed the BIOS configuration but did not change the nomenclature making it very difficult for people with a Q6600 to know what to use. This was confirmed by Raja on the DFI forums.

Now the beta bios releases that have been posted lately appear to be unified but I haven't tried it.