I just recently noticed that my Core i7 860 is not reaching full turbo boost in Windows 7. Not sure why, because it worked for a number of years previously, and still works as expeted when dual booting to Windows XP. So I'm suspecting this is a Windows 7 software problem, rather than a bios or hardware problem.
System specs:
Asus p7p55d, latest bios
Intel Core i7 860
Cooler Master Hyper 212+ cooler
12GB DDR3
AMD Radeon r9 380
Windows 7 SP1 with recent updates
Windows XpP SP3
The basic problem is that the CPU only clocks up to 22x multiplier - this is the max turbo frequency when all cores are active. When only 1 core is under load, it's supposed to clock up to 26x multiplier, but my cpu still goes only up to 22x, no matter how many cores are active. I'm using cpu-z and Tmonitor to measure the cpu frequency. Any ideas what can be causing this?
Things I already tried:
-resetting bios defaults
-reinstalling cpu driver in device manager
-changing power plan setings
System specs:
Asus p7p55d, latest bios
Intel Core i7 860
Cooler Master Hyper 212+ cooler
12GB DDR3
AMD Radeon r9 380
Windows 7 SP1 with recent updates
Windows XpP SP3
The basic problem is that the CPU only clocks up to 22x multiplier - this is the max turbo frequency when all cores are active. When only 1 core is under load, it's supposed to clock up to 26x multiplier, but my cpu still goes only up to 22x, no matter how many cores are active. I'm using cpu-z and Tmonitor to measure the cpu frequency. Any ideas what can be causing this?
Things I already tried:
-resetting bios defaults
-reinstalling cpu driver in device manager
-changing power plan setings