Originally posted by Blue Beard
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New tool for undervolt/overclock AMD K8L and K10 processors
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Originally posted by rumirand View PostSorry for the ignorance, but it does support the Athlon Neo MV-40 preocessor? In case if not, it will suppor it?
Thanks in advance.
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Originally posted by blackshard View PostMost probably it is reported correctly, but there is an issue with AM2+ CPUs on AM2 boards: since there is just one single power plane, the processor and the northbridge (i.e. the memory controller) share the power source. So the processor is feed with northbridge voltage, which is usually higher than processor voltage, so those VID numbers means just nothing in such situation. That's the reason why AMD raise the TDP of AM2+ CPUs when put in an AM2 boards.
You may try to change those VIDs but shouldn't happen anything at all. To be precise, I guess that because I never had the chance to experiment it by myself, but just read it on AMD documentation.
At the moment the program can't change the Northbridge VID on K10 processors because I have to test and experiment by myself since the matter is a bit delicate.
Thanks for your clarification
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Hi Blackshard
There is this program for setting the voltage of AMD K8 processors. It works well on my Athlon 64 X2 5200+ CPU, but the project seems idle for
nearly 2 years already. And it's a bit user unfriendly.
Could you take a look at it, and possibly and combine the two? it'd be great.
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Originally posted by ntt2010 View PostHi Blackshard
There is this program for setting the voltage of AMD K8 processors. It works well on my Athlon 64 X2 5200+ CPU, but the project seems idle for
nearly 2 years already. And it's a bit user unfriendly.
Could you take a look at it, and possibly and combine the two? it'd be great.
http://cpupowerd.sourceforge.net/
Anyway it could be interesting to take a look to the code to learn K8 usage, but at the moment, since I have no K8 processor to develop on, I can't produce anything valuable.
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Hi,
I am trying to use your software but I run the compile script I get this:
Code:Griffin.cpp: In member function ?virtual void Griffin::perfCounterGetValue(int, int)?: Griffin.cpp:1122: warning: format ?%lld? expects type ?long long int?, but argument 4 has type ?uint64_t? Griffin.cpp: In member function ?virtual void Griffin::perfMonitorCPUUsage()?: Griffin.cpp:1149: warning: spurious trailing ?%? in format Griffin.cpp: In member function ?virtual void Griffin::perfCounterMonitor(int, int)?: Griffin.cpp:1168: warning: format ?%d? expects type ?int?, but argument 2 has type ?long unsigned int? Griffin.cpp:1192: warning: format ?%llu? expects type ?long long unsigned int?, but argument 4 has type ?uint64_t? Griffin.cpp:1192: warning: format ?%llu? expects type ?long long unsigned int?, but argument 5 has type ?uint64_t? K10Processor.cpp: In member function ?virtual void K10Processor::perfCounterGetValue(int, int)?: K10Processor.cpp:1237: warning: format ?%lld? expects type ?long long int?, but argument 4 has type ?uint64_t? K10Processor.cpp: In member function ?virtual void K10Processor::perfMonitorCPUUsage()?: K10Processor.cpp:1263: warning: spurious trailing ?%? in format K10Processor.cpp: In member function ?virtual void K10Processor::perfCounterMonitor(int, int)?: K10Processor.cpp:1282: warning: format ?%d? expects type ?int?, but argument 2 has type ?long unsigned int? K10Processor.cpp:1306: warning: format ?%llu? expects type ?long long unsigned int?, but argument 4 has type ?uint64_t? K10Processor.cpp:1306: warning: format ?%llu? expects type ?long long unsigned int?, but argument 5 has type ?uint64_t?
I'm trying to control the voltage/frequency for my 7750 which is in an AM2+/AM2 Board. Kernel is 2.6.32-25-generic
Ubuntu 10.04 64 bit
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These silly forums don't let you edit your posts
anyways here is what I would have added to post above:
EDIT: I have OC'd my CPU to 3.1 GHz using a multi bump, and Cool N' Quiet is working as the CPU will scale back to 1.35 GHz when idle. However I'd like to scale back that frequency even more, as well as reducing the voltage further.
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I did manage to get the app working. I have a new question, how can I force the processor to stay in a lower p-state even when under load? I want to stress test my lower p-states with prime95 to make sure they are stable, but when I run prime95 it just switches to p-0. I also want to demonstrate how much power power the CPU uses when idling at 3.1 GHz (1.425v) vs. 0.6 GHz (0.900v).
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