Underclocking?

[Craig Hay]

Does anyone know if it is possible to 'underclock ' a processor?
I am looking at doing some Performance comparisons , but am limited to the hardware I have already.
Also is it possible to vary the amount of Cache available?

Thanks

C

[Jan Soska]

Hello,
try to find CPU specified utilities, I think there are some for AMD, should be for Intel as well, but they are not provided by HP.

Jan

[Michal Kapalka (mikap)]

hi,

if you have proliant server, you oculd use this :

With the HP Proliant G5 -G7 servers (e.g. DL380, ML370, etc.), it is possible to disable half of the cores available to the server.

This is a BIOS switch labeled "Processor Core Disable" with options "All Processors Enabled" and "Disable One-Half of cores per Physical Processor."

Of course you will be able to disable/enable HT,

and of course you could use Intel® Turbo Boost Technology, it will disable cores, but the frequensy will be increased.

http://www.intel.com/technology/turboboost/

mikap

[Michal Kapalka (mikap)]

hi,

and also check this docu :

Configuring the HP ProLiant Server BIOS for Low-Latency Applications White Paper

http://h10032.www1.hp.com/ctg/Manual/c01804533.pdf

mikap

[Mark Woodruff]

You might try this: http://www.techpowerup.com/systool/

Haven't used it. On the DL385s there's a power regulator setting in the Bios (RBSU) that allows you to lock the processors at low speed as well.