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ACPI Uniprocessor PC

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by cp7212 1 view

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Ah yes, it seems no matter how much you know, you still have room to get scr*wed. I have a CPU labeled Celeron on a box I built. I tried to run some things on it and got a "CPU not supported". I haven't seen that since 486 went to Pentium class.

I think my supplier pulled a bait and switch on me. Device manager says the CPU is a "ACPI Uniprocessor". Google just gave me a bunch of nothing. Could you fellow Tech Republic people give me some insight? Thanks.

Dafe2, I hope this is correct grammar and placement.

5 replies

by thechas

Looking through a few documents on Intel's site, "ACPI Uniprocessor" is a default description for the CPU in an ACPI compliant computer.

In several chip-set design guides, Intel refers to the CPU as a Uniprocessor.

Now, as to your specific problem:

When do you get the "CPU not supported" message?

Does the BIOS properly identify the CPU for Front Side Bus and clock speed?

It may be a simple mater of the CPU identifier not being included in the CPU table of the BIOS.

For socket 429 and 478, Intel has managed to increase the complexity of selecting a CPU.
Different motherboards and chip-sets support different Intel CPUs.
At some processor speeds, there are as many as 4 different Intel P4 CPUs. At most, 2 of the 4 will work on a specific motherboard.

The Celeron family has 2 basic models. The standard Celeron CPUs have a 400 MHz FSB.
Celeron "D" CPUs have a 533 MHz FSB.
Older motherboards might not support Celeron "D" CPUs.
Many of the newest Intel based motherboards will NOT support the 400 MHz FSB Celeron CPUs.

If you get the error message when running applications, I would be curious to know what the applications are.

I could make a case that some CAD and other graphics programs would require a Pentium CPU and would not be able to run with a Celeron.
The hardware requirements for the software would detail this.

Chas

by cp7212

Chas, guess your going to be the only helper on this one. Thanks for the input.

by cp7212

TheChas:

The app that did not recognize the CPU was only a game demo. Up until that point, I never had a problem. The CPU looked normal when I put it in. I just want to make sure it is a decent chip; I don't want my supplier getting one over on me.

Let me ask this. Would you put one of these chips in a box that you would make? It's not a business machine, just a home PC. Thanks.

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