t30 processor speed married to motherboard?

[rwarlick]

I'm rebuilding a t30 and am unsure if I should purchase a mb on ebay without the processor. Is the speed of the processor matched to the motherboard? Is the mb made to go with a particular speed processor? Can I swap out 1.6GHz, and replace w/ 1.8, 2.0, 2.2?

Can't think of any other ways to ask this...

[jronald]

They will generally swap.
There are 2 different motherboards, and at least 2 different fans. I have run up to 2.0 gig CPUs with no issues on all of the MoBos. When you go higher than that, you tend to get over heating.

Ron

[cadillacmike68]

The main system board controls the machine's speed. These are all P4M CPUs, but they are RATED for a max speed (sort of like speed rated tires). Now that said if you put a 1.6GHz CPU in a 1.6GHz system you are overclocking the CPU with associated attendant risks. the reverse should not pose any problems.

[Neil]

The motherboard sets the bus speed. The multiplier is set on the CPU chip. - (Condensed version of the story.)

[jronald]

OK, both of your posts confused me, and I have worked on them!

I have run up to a 2.0 CPU on both boards, no issues.
If you attempt to run higher than the 2.0 CPU on the lower board (1.6 or 1. I personally have run into over heat issues.
My Winblows machine was an early 1.6 and the fan runs most of the time, with the 2.0 installed.
My Macbuntu machine was a later 1.8 and the fan never runs.
When I swapped the HDD the 1.6 machine ran hot on the Linux.

Hope that helps
Ron

[ajkula66]

Two types of boards, and three types of fans exist for the T30 generation.

Type I board was meant to be used with 1.6/1.8 CPUs.

Type II with everything above.

That being said, I've ran 2.0 CPUs on Type I board, but with a proper fan for that CPU speed.

Honestly, anything about 2.0 is overkill on these machines IMHO since the performance gain doesn't justify the extra heat.