You'll have to post some links to your friend's CPU.Originally Posted by KURTZ
A Core i7-860 can only have a 26X maximum multiplier full time if you disable 3 cores in the bios.
If you have all 4 cores enabled in the bios, the multiplier will constantly cycle between 25 and 26. You can use a program like i7 Turbo and calculate the average multiplier which has some meaning.
When 4 cores are enabled in the bios, CPU-Z and ELEET might report your maximum multiplier at 26 but it is not steady at 26. It's constantly dropping down to 25 or lower depending on how many cores are active at any point in time. Ask your friend to send a screen shot of CPU-Z and i7 Turbo at the same time when CPU-Z is reporting a 26 multiplier and I will show you what's really going on.
i7 Turbo reported a multiplier of 25.248 in the screen shot you posted in the RealTemp forum. The only way the average multiplier can be greater than 25 is if it is spending some of its time at 26. With C3/C6 enabled, your multi is definitely spending some time using the 26X multiplier but with 4 cores enabled in the bios, it is not possible for it to spend 100% of the time using the 26 multi. Don't be confused by CPU-Z or ELEET reporting the maximum multiplier. That only tells part of what's really going on inside your CPU.
Edit: The 0x00000016 in MSR 0x199 is in hexadecimal so the equivalent in decimal is 22. The default multi is 21 and setting this to one more than 21 is asking the CPU to use turbo mode. The CPU gives back the maximum turbo boost it is allowed to use based on how many active cores you presently have and whether C3/C6 is enabled. You can also read MSR 0x198 which tells you what multiplier the CPU is using but I'm not sure what multiplier it will show on these new CPUs when multiple bins of turbo boost are available. That's why programs that depend on reading MSR 0x198 are not always accurate, especially at idle or when lightly loaded.
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