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Task manager reports 2.53 GHz, but CPU-Z reports 1192 MHz. My windows is a fresh install of the Windows 8 Pro Upgrade. When I used the Consumer Preview, task manager would report different frequencies, but in my current installation this doesn't happen.
I'm currently running on battery, 64-bit, Intel Core i5 540M.
Ah, it seems to be related to certain drivers http://www.blankmanblog.com/general-news/tips-tricks/enable-windows-power-saving-features-while-running-hyperv-on-windows-2008-r2/ Haven't tried it though, still in the middle of unresumable download.
– Martheen Cahya Paulo – 2012-11-25T11:00:45.183I have created this question as a followup: Why doesn't Windows 8 Task Manager report the actual CPU frequency when Virtualisation is turned on?
– None – 2012-12-05T00:39:02.303