Intel Q6600 CPU initialization

[Михаил Кипа]

I have got Intel Q6600 and use it under FreeBSD 7STABLE (RELENG7). My cpu works with same 
overclocking (instead of standart 266x9 (FSBxMultiplyer) i use 425x8). When I boot my system I 
have these messages on the screen (and in dmesg)

Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Core(TM)2 Quad CPU    Q6600  @ 2.40GHz (3825.23-MHz K8-class CPU)
  Origin = "GenuineIntel"  Id = 0x6fb  Stepping = 11

But it really works ONLY on 3400MHz! not 3825.23-MHz!
Can somebody explain me where this value calculates? 

Mihail.