Does my server support SpeedStep / TM2 ?

Pentium100 May 15, 2011 10:05 PM

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Hi again, I tried to run RMClock on my server and found out that it appears to not support TM2 which allows better control of the power consumption.

The server has a SE7520JR2 motherboard and two 3GHz Xeon (Stepping E0) CPUs.

The manual of the motherboard says that it supports SpeedStep.

The CPU (Nocona) should also support it, at least it says so here.

AIDA64 also says that the CPU supports it.

There is no option in the BIOS for enabling it (or it's well hidden).

So, does the CPU and board actually support SpeedStep (or TM2) or not?

1. Re: Does my server support SpeedStep / TM2 ?

edwardzh May 17, 2011 7:42 AM (in response to Pentium100)

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Yes SpeedStep is supported. If you have the latest BIOS installed, you should find the setting in Advanced => Processor Configuration sub-menu.
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2. Re: Does my server support SpeedStep / TM2 ?

Pentium100 May 17, 2011 12:23 PM (in response to edwardzh)
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BIOS version is the latest I could find (SE7520JR22.86B.P.12.10.0092), however, there is no option for SpeedStep in the Advanced ->Processor Configuration menu. Is there another way of enabling it?

20110517068.jpg 1.4 MB
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3. Re: Does my server support SpeedStep / TM2 ?

edwardzh May 19, 2011 10:39 AM (in response to Pentium100)

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So you have a Xeon 3GHz processor E-0 stepping. SpeedStep is not support on this processor. See http://download.intel.com/support/processors/xeon/sb/30240222.pdf.
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4. Re: Does my server support SpeedStep / TM2 ?

Pentium100 May 22, 2011 5:25 PM (in response to edwardzh)

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Interesting, the two documents conflict.

The .pdf file says that the CPU does not support TM2, while this list says:
SL7PE 3.00 GHz 800 MHz 90 nm E0 1 MB 604-pin micro-PGA 1,2,5,10
with note 5 (and 2) being TM2 support.

Oh well, if it does not support TM2 then there is nothing (short of replacing the CPUs) that I can do about it. Thanks for clarifying it to me.
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