topic Re: help:supported voltage and frequency for CPU ?? in Mobile and Desktop Processors

help:supported voltage and frequency for CPU ??

idata — Sun, 07 Mar 2010 15:35:14 GMT

Hi,

Intel processors support multiple voltage and frequency settings. It is called DVFS technology. But I can't find information about supported frequency and voltage in follwing files:

Datasheets , Design guides , Specification updates

By the way, my processor is Intel® Celeron® CPU E3200 2.4 GHz

Can you help me?

Re: help:supported voltage and frequency for CPU ??

idata — Wed, 10 Mar 2010 23:42:57 GMT

The information that you are looking for is not available easily. The thing is that processors will utilize a range of voltages (0.85V – 1.3625V) and this depends on the processor temperature, usage, core speed and features like the Enhanced Intel SpeedStep(R) Technology (EIST).

PV.

Re: help:supported voltage and frequency for CPU ??

idata — Thu, 11 Mar 2010 07:24:39 GMT

Thank you for your help.

But why some paper list some settings about voltage ,frequency and power.(matching)

for example:(about xscale processor)

Frequency fk (MHz) 150 400 600 800 1000

Voltage(V) 0.75 1.0 1.3 1.6 1.8

Powerconsump. pk (mW) 80 170 400 900 1600

How can I get similar settingsv like that？

Thank you！

Re: help:supported voltage and frequency for CPU ??

idata — Thu, 11 Mar 2010 17:58:40 GMT

No, or at least you wont get a general one as it depend on many factors like the specific motherboard design and chipset.

The information that you are looking for can only be provided by the motherboard manufacturer when using that specific processor.

PV.

Re: help:supported voltage and frequency for CPU ??

idata — Fri, 12 Mar 2010 13:08:19 GMT

Oh,my motherboard is G31_M8056_A662, cpu is intel® Celeron® CPU E3200 2.4 GHz, I will try to contact Lenovo.

If they can't give valuable information, I think intel is more familiar with its cpu.

Re: help:supported voltage and frequency for CPU ??

idata — Fri, 12 Mar 2010 18:43:09 GMT

Intel wont give you that information as it will need to be tested on your computer to measure the correct voltage and provide you with an answer.

Re: help:supported voltage and frequency for CPU ??

idata — Sat, 13 Mar 2010 16:24:07 GMT

Sorry to bother you again. I have contacted Lenovo,and they told me to get information about G31 motherboard from intel site.

I have tried all the technical files, but with no result.

BTW, I have only a power meter, which can test the whole system voltage, current ,power. But how about the processor.

How can you get it?

Thank you.

Re: help:supported voltage and frequency for CPU ??

idata — Mon, 15 Mar 2010 15:23:32 GMT

There is no way to do it directly. Intel(R) uses specialized systems to test the processors running at certain speeds and see how they work and if it gives processing errors.

It seems like the only way to know this information is that you go and change the multiplier on your system and the voltage and run a stress test for every change, this way you can get that information.

Remember to stay in the voltage ranges that where provided above.

Note that this may burn your processor and void your warranty.