intel C2D CoolnQuiet equivalent?

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rei
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intel C2D CoolnQuiet equivalent?

Post by rei » Fri Jun 08, 2007 4:26 pm

Is there any driver or tool to download with C2D chips to disable/enable the throttling?
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Sizzle
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Re: intel C2D CoolnQuiet equivalent?

Post by Sizzle » Fri Jun 08, 2007 6:27 pm

rei wrote:Is there any driver or tool to download with C2D chips to disable/enable the throttling?
EIST, Enhanced Intel SpeedStep needs no software in XP or Vista. you can enable or disable it in the BIOS of the motherboard.
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HueyCobra
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Re: intel C2D CoolnQuiet equivalent?

Post by HueyCobra » Fri Jun 08, 2007 7:11 pm

It should be enabled/disabled in both the BIOS and Windows XP power management according to Bay Wolf's SpeedStep FAQ.
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rei
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Post by rei » Fri Jun 08, 2007 8:02 pm

Thanks for the replies. So set to "minimum power management" profile a la CnQ?
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sjoukew
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Post by sjoukew » Sat Jun 09, 2007 2:19 am

More or less Yes, but cool 'n quiet saves more energy.
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Lawrence Lee
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Post by Lawrence Lee » Sat Jun 09, 2007 9:55 am

C&Q is better because it drops the voltage and multiplier more than EIST. The lowest multiplier for Core 2's is 6 so on the E6420 system I just built EIST drops the multiplier from 8 to 6 and vCore from 1.35V to 1.20V. Not really a lot of power savings there. I imagine it'd be more effective on Core 2's with high multipliers.
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LuckyNV
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Post by LuckyNV » Sat Jun 09, 2007 11:27 am

Amourek wrote:C&Q is better because it drops the voltage and multiplier more than EIST. The lowest multiplier for Core 2's is 6 so on the E6420 system I just built EIST drops the multiplier from 8 to 6 and vCore from 1.35V to 1.20V. Not really a lot of power savings there. I imagine it'd be more effective on Core 2's with high multipliers.
multiplier is only dropped to 5x on A64, but because it uses 200MHz CPU FSB only therefore final is only 1000MHz compared to 1600MHz Core2
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jojo4u
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Post by jojo4u » Mon Jun 11, 2007 3:52 am

Frequency is nearly irrelevant, only the vcore counts here. And that's 1.1 V for the Athlon 64 and 1.15 V for the desktop Core 2 Duo. How much the CPUs draw in idle is also determined by the manufacturing process. As an example, look at the Core 2 Duo which evolved pretty well as you can see here.
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