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AMD Athlon 64 2800+ ("Newcastle") Socket 754

DISCUSSION Michael Pophal 4 participants 4 messages Mar 29, 2005

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Hi,
I decided to change my new Sempron 2600+ to a Athlon64 2800+. Does anybody habe experiences with this CPU an CPUfreq? Does it work together?
This CPU knows of course 'Cool'n Quiet', but is NOT a mobile processor! Is there a difference between powernow! and Cool'n Quiet?
I have to send the sempron back soon, so any hints are appreciated.

Thanks!

Mike

#1 lore raw

Hello all,

In the same thread I'd like to ask if is it possible to slow down a "Intel(R) Xeon(TM) CPU 3.40GHz" with the appropriate module ()p2_clockmod)? It does not has 'Cool'n Quiet'. It is a workstation. BTW which is the best utility to switch cpu frequencies, besides the kernel modules of course?

Thanks,

Daniel

Quoted 17 lines · Michael Pophal

Hi,
I decided to change my new Sempron 2600+ to a Athlon64 2800+. Does anybody habe experiences with this CPU an CPUfreq? Does it work together?
This CPU knows of course 'Cool'n Quiet', but is NOT a mobile processor! Is there a difference between powernow! and Cool'n Quiet?
I have to send the sempron back soon, so any hints are appreciated.

Thanks!

Mike

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10LE - Linux
Nokia Institute of Tecnology - INdT
Manaus - Brazil
#2 lore raw
Quoted 5 lines · Daniel Petrini

Hello all,

In the same thread I'd like to ask if is it possible to slow down a "Intel(R) Xeon(TM) CPU 3.40GHz" with the appropriate module ()p2_clockmod)?

You're referring to p4_clockmod, and its possible to use it to slow down said processor, AFAIK.
However, it does not scale _voltage_ (and only throttles but does not scale frequency) like 'Cool'n Quiet' or 'Demand-Based-Switching'. Some recent Intel Xeon processors are capable of dynamic frequency and voltage scaling, so you should try out "acpi-cpufreq" and "speedstep-centrino" first.

Dominik

#3 lore raw
In reply to Michael Pophal

All Athlon64 do support C'n'Q.

I have 3000+ and my brother have 2800+. Both work with cpufreq without any problems.
(I've even undervolted my C'n'Q :) )
Ofcorse, you should read your motherboard manual and search Internet a little bit because some Socket 754 mobos does not support C'n'Q well if they work with two memory modules.

C'n'Q = PowerNow! for AMD64

Quoted 21 lines · Michael Pophal

Hi,
I decided to change my new Sempron 2600+ to a Athlon64 2800+. Does anybody habe experiences with this CPU an CPUfreq? Does it work together?
This CPU knows of course 'Cool'n Quiet', but is NOT a mobile processor! Is there a difference between powernow! and Cool'n Quiet?
I have to send the sempron back soon, so any hints are appreciated.

Thanks!

Mike

_______________________________________________
Cpufreq mailing list
[email protected]
http://lists.linux.org.uk/mailman/listinfo/cpufreq