Is there a way I can slow/underclock my QuadCore down when not required ?
i.e. in the day I do video converting but at night I want it to do plain downloads. I searched on google, but it throws up SpeedFan, which doesn’t really solve the purpose.
Yup..
undervolt it slightly & you are done…
On Intel quad enable Intel EIST from BIOS.
Read here how EIST underclock CPU automatically.Enhanced Intel SpeedStep® Technology How To Document
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see first identify your primary requirement - what will under clock achieve for you? I think you may look at undervolting also. The BE of the AMDs can be underclocked and undervolted to a great extent. i use k10stat (for AMD phenom based processors) for my AMD 7750 and underclock it to 500 Mhza and undervolted to 0.8 when playing H264 files via dxva. Similarly I use RMclock for my k8 based AMD 64 venice (in download rig to underclock to 800 Mhz at 1.1 v at most times during download etc.
You can enable CnQ from your bios - your proccy will underclock automatically when idle.
@OP: When you ask a question, you should provide your system configuration. We can’t guess which CPU you have and recommend.
most core2’s have a feature when the system is idle, the multiplier automatically reduces, there’s some setting in bios for that, mine does it.
^^ ALL CPUs support power saving features.
Sorry , its a Q8400 on a DG31.
If C1E and Eist are enabled in BIOS and power saver/balanced is enabled in vista/7, your CPU’s should underclock and under vold automatically. You actually don’t need a different s/w for that.