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Core 2 Duo E6750 Idling at 1.99 MHz Not 2.66
Posted: Fri Nov 16, 2007 12:31 pm
by Damnidge
My new processor is a E6750. It is rated at 2.66 GHz.
When I first put the machine together CPU-Z reported the core at 1.99 and multiplier at 6x. I dismissed it as a possible error after doing some research on the web, but now find it is not the case
Today I installed Easy Tune 5 to monitor cpu fan speeds, and I noticed it also reported the idle speed at 1.99. When I open a program, or game etc, it jumps to 2.66 for a few seconds, and then once the program is open it goes back to 1.99
I am assuming this is an energy setting in my BIOS, but I cannot seem to find anything obvious to me. I double checked my BIOS has the multiplier set at 8x. Any suggestions?
Posted: Fri Nov 16, 2007 12:40 pm
by Damnidge
Is it Intel SpeedStep?
Posted: Fri Nov 16, 2007 1:51 pm
by DW_Cheapshot
Like the head on a nail, its a power saving feature.
Some say it can mess with over clocking,
otherwise its a good thing. My system clocks down
on ut2004 not enough of a strain.
Im running the quad at 2.8 Nothing has topped it
out yet, not need to go higher.
Posted: Fri Nov 16, 2007 1:58 pm
by Damnidge
So when I eventually overclock will I need to turn it off? If so, how do I turn it off? Is there a BIOS control, or is it something built into the chip I cannot change?
Posted: Fri Nov 16, 2007 6:21 pm
by zeus
It is a BIOS setting. Basically, when the machine is at idle, the multiplier sits at 6x. When you put load on the CPU it flips to 7x (or whatever yours is suppossed to be).
Fire up CPU-Z, then fire up Orthos. Watch it flip.
Posted: Fri Nov 16, 2007 8:32 pm
by Damnidge
should I turn it off or leave it on?
Posted: Fri Nov 16, 2007 9:31 pm
by DW_ToxicWaste
When you are ready to overclock, turn it off.
When you get your overclock completely stable, and you're ready to go, you can re-enable it (make sure you manually record your BIOS settings somewhere in case it really screws things up and you need to reset your BIOS).
Some people report that it makes overclocks unstable. Others report no issues. If you see instability after you enable it, then turn off. if not, you can leave it on.
Rich (TW)
Posted: Fri Nov 16, 2007 11:51 pm
by Damnidge
What is it labeled as in the BIOS?
Posted: Sat Nov 17, 2007 9:47 am
by zeus
What is your MB?
Posted: Sat Nov 17, 2007 10:35 am
by Damnidge
my mobo is a Gigabyte GA-P35-DS3L
I did some research last night, and I think I found the entires I am interested in and their current states in BIOS:
1. CPU Enhanced Halt (C1E) = Enabled
2. CPU Thermal Monitor 2 (TM2) = Enabled
3. CPU EIST Function (Enhanced Intel SpeedStep Technology) = Enabled
From the info I read on all three, these are the things making my cpu go down.
The thing that confuses me is that all three sound like they do the same thing more or less. C1E is the one that sound like it drops the multiplier to save energy, TM2 sounds like it throttles back voltage to avoid overheating, and EIST was compared to AMD's Cool 'n Quiet.
My main question is, do I want any of these? Saving energy is great, but at what cost? I am also curious how much energy I am actually saving?