maikon: MSR contains your maximum turbo multipliers and your first screen shot shows,
I took a wild guess based on the Intel documentation for the E3-1230v1 CPU but your v2 is slightly different than my guess. There are 4 different multipliers in this MSR that define what your CPU is capable of. 0x23 is a hexadecimal number so converting that to decimal gives you 35. 0x24 in hex equals 36 and 0x25 in hex equals 37. These are the maximum multipliers your CPU can use based on how many cores are active.
1 core active - 37 multiplier
2 cores active - 37 multiplier
3 cores active - 36 multiplier
4 cores active - 35 multiplier
As long as your CPU is operating within the temperature and turbo power limits, it will be able to operate at those maximum multipliers.
MSR 0x194 shows whether your CPU supports any multiplier overclocking features. The digit 1 in the middle of that register confirms that your Xeon CPU does not support any multiplier overclocking so the multis listed above are your absolute maximum. On a K series CPU with unlimited overclocking, this digit would be the letter F. If you see the number 9 in that register, that shows the CPU supports up to +4 bins of multiplier overclocking. looniam's Core i5-2400 probably has a 9 in that register.
I originally couldn't figure out why the E3-1230v2 in the video you posted was using the 35 multiplier when fully loaded but now it makes sense. That is the maximum multiplier for the E3-1230v2 when all 4 cores are active. There is no way to go beyond this limit. The only overclocking you can do is by raising the BCLK. If you do this, make sure you do lots of testing to confirm that you are 100% stable. I have yet to see any users that were 100% Prime and IBT stable at a BCLK of 108.6 MHz.
The 8 in MSR 0xCE shows the minimum multiplier for your CPU. By default, most desktop CPUs have a lower limit of 16 but you can go down to 8 by using ThrottleStop if you need to.
This register also shows your CPU supports adjustable turbo power limits. You can adjust these limits while in Windows as long as your bios does not lock this feature. Many desktop boards lock adjustable power limits but you can usually adjust these in the bios if they are locked. The only reason you would need to increase your turbo power limits is if your CPU can not maintain the full 35 multiplier when all 4 cores are fully loaded.
The 21 in MSR 0xCE is the default multiplier for your CPU. (0x21 = 33) so your default multi is 33.
i showed in my screenshot that all four cores were being stressed in prime with a 36 multi.
That's true. What I was trying to say is that your CPU supports higher multipliers than 36 but you can not access those multipliers when all 4 cores are active. If you want a bigger CPU-Z validation number, try disabling 3 of your 4 cores in the bios and you might be able to access the 38 multiplier. I am pretty sure your CPU supports this multiplier but the bios might block you from accessing it. Only the fully unlocked K series CPUs will let you run a CPU's maximum multiplier when all 4 cores are active.Edited by unclewebb - 6/15/13 at 8:58am