IBM ThinkCentre not recognizes CPU 3.6GHz only with 2.8GHz

[Freddy Crueger]

Hello forum members.
Wanted to quickly introduce myself only, am new here in this forum and have 10 years experience with IBM ThinkPad and ThinkCentre. Unfortunately, I am now at my limits because I know only to BIOS F1 & F12.
Very briefly, since it may be too extensive.
I have an IBM ThinkCentre 8104-CTO, including Intel P4 / 640 / 3.2GHz / 800MHz FSB / 84W to I swapped an Intel P4 / 660 / 3.6GHz / 800MHz / 115W. This is, however, detected only with 2.8GHz.

CPU Takt 2793.0 MHz (Original: 3600 MHz)
CPU Multiplikator 14x
CPU FSB 199.5 MHz (Original: 200 MHz)
Speicherbus 266.0 MHz
DRAM:FSB Verhältnis 8:6

What's wrong, I cannot say I've been locking in to it for weeks.
Normal is the multiplier of a 3.6GHz x 18 and 3.2GHz in x 16 and they come from the same family.
In the IBM data are the CPU's just to 3.4GHz 84W x17 Multiplier the 3.6 is not stated whether the to the power supply is the only max. 225Watt.
I cannot say for certain, because I lack here the experience, since many facts import, because the CPU cannot over clocking.
My TC will be used exclusively for office applications, XPpro, W7 Ultimate, MS Office Enterprise, Net-Framework, Adobe [all applications], AVG, Paragon, etc. So no need for i7.
Hope that a member may have to help me, even more data and can still provide information.
With best regards / Freddy

[Fossalta]

I believe that CPU supports some sort of speedstep (lowering multiplier). Try to put some load on the CPU, and the multiplier should go up. Run this little proggie for each core/thread your cpu has to put it to 100% usage.

[Guest]

Hi Fossalta
Thank you for your respond.
Nice program but I don’t know it and I am scared it will fry the Mobo or the CPU. [We got here ~40C]
I done a tests with Intel Programs from there Site, and Everest_AIDA64 Benchmark and the CPU will not move over 2.8GHz under extreme Stress.
Further I used the MS-Calculator with a 15 Digit Number and then N!
This puts extreme power on the CPU.
Is there some got experience with the program?
Regards
Freddy

[max3]