Quote Originally Posted by unclewebb View Post
There was a weird problem a while ago with the DFI X58 boards that was limiting the multiplier when using Windows 7 RC.

I wrote a program for them at the time that was kind of a quick work around that helped them out until the bios guys were able to get the real problem fixed.

I just updated it for these new CPUs so give it a try.
http://www.fileden.com/files/2008/3/...MultiBoost.zip

Load your CPU with Super PI or what have you and hit the Boost Now button and see what happens.

I don't know if it will help your problem any but I know it can't hurt to try it. Your CPU seems to be saying that it supports turbo boost so it might be a hidden setting in Windows that is holding you back.
Uncle Webb,
I tried it out but it didn't seem to make a difference. I'm still locked at x20 on the i5 750. I also installed Vista Home 64bit onto another hdd and it shows the same as well. If turbo is set to "enabled" (20x200) in BIOS it will report a speed of 4200Mhz in BIOS but Windows still shows 19x200 and 4000Mhz. If I "disable" turbo it will show a speed of 4000Mhz in BIOS and of course so does CPUZ/Eleet in windows. I'll probably now go and post about this issue at the EVGA forums...