Reply 20 of 44, by red-ray
red-ray wrote on 2020-10-15, 14:15:
The last time I recall checking was on 22-Feb-2006 on a Gigabyte 7DPXDW-P system with an AMD Athlon @ 2.00 GHz + a Duron @ 1.60 GHz.
luckybob wrote on 2020-10-15, 17:48:
NO. No, they don't. If you have mismatched CPU's it will run at the slower speed. Period. End of discussion. It's a fracking miracle it even posts with mismatched processors like that. NT/2K will complain about mismatched processors and might not be stable. XP will NOT boot unless the processors are PERFECTLY matching.
Given my earlier post I can't see how this can be correct. Using the save file and running in SIV test mode I get as below which clearly shows the two CPUs are different and running at different speeds.
Heck, with multi-core CPUs the cores can run at different speeds so Windows MUST implicitly support different sockets at different speeds.
After pondering Intel CPUs running at different speeds I am concerned about the QPC. It's possible the TSC get's used for the QPC and suspect the two sockets having different TSCs may cause issues, then again keeping the two TSCs I phase may also be an issue. I also recall XP and 2003 using different QPCs for the same system.