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Help and Support Forums => Technical Support => Topic started by: Krusty on May 03, 2007, 12:22:57 PM

Title: Swapping CPU, questions....
Post by: Krusty on May 03, 2007, 12:22:57 PM

I saw this in another thread:

Quote

Originally posted by Skuzzy
If you update the BIOS ROM, you may need to update the INF drivers for the motherboard as well.  This problem usually will only show up for an Intel CPU when the INF files have not been installed, updated, or if it is the Intel mobile CPU.

I have some questions ...

I've got a P4 2.66GHz Prescott with 533MHz FSB right now. I was running a BIOS at version 1.80. I ordered a new CPU, and checked the webpage for my mobo which listed a slew up updates to the BIOS, including tweaked support for the new CPU I've ordered.

I updated the BIOS to version 2.40.

Now the fan is louder, even at idle. The CPU fan never drops below 3000 rpm. It's not any hotter than it used to be, just never drops below that amount. Used to idle at 2400 or so. I've gone in and tried to set the quiet fan function in BIOS but doesn't seem to help much.

Does this mean I need to update the INF I'm using in windows?? Or is it totally unrelated?

Will I need to do anything other than take out the old CPU and put in the new CPU? From memory, WinXP should just auto-install the proper drivers for this chip.

Title: Swapping CPU, questions....
Post by: Skuzzy on May 03, 2007, 12:28:10 PM

The INF files should not be driving the CPU fan.  That information does come form the BIOS.  The INF files are more for chipset initialization and parameters for the operating system to use.

Title: Swapping CPU, questions....
Post by: Krusty on May 03, 2007, 12:37:19 PM

Okay then, thanks. I guess the new BIOS just had different settings for fan speeds. It was quite a big update (at least a dozen versions came out since my default BIOS).

I've never swapped a CPU that didn't involve swapping the mobo and reinstalling WinXP from scratch.

Is there anything I have to worry about, Windows-wise? I don't want to reinstall just yet. Am I foolish to think I can just swap the chip, and that all will be well?

Title: Swapping CPU, questions....
Post by: Tigger29 on May 03, 2007, 08:53:47 PM

You can just install the chip.. and all will be well.. ASSUMING the BIOS update adds support for the new CPU.

Good luck.

Title: Swapping CPU, questions....
Post by: Krusty on May 03, 2007, 09:54:11 PM

It came with support for it, the BIOS update just tweaked some things including RAM support and other minor things. Thought it was best to get the update, just in case.

Title: Swapping CPU, questions....
Post by: Roscoroo on May 04, 2007, 01:23:58 AM

install the new cpu .. enter the bios and check/set the timings then boot windows it should be fine .  

i always run dxdiag after a cpu swap just for the heck of it , then do a temp check .  unloaded 1st for a baseline, and then  after loading it hard  .