Question about Dothan in T41...

[jasew503]

I have 2 Dell Precision M70 Laptops, one has a bad video card but has the SL86G (Dothan?) Pentium M-730 1.6Ghz 2MB 533-FSB CPU In it. Will this cpu work in a Thinkpad T41 that has the Pentium-M 1.6 400FSB 1MB Cache? If so, would there be any performance gain? I understand the Dell uses DDR2 ram and has a 533 FSB, and the thinkpad uses DDR1 and has a 400 FSB. Just wondering if these CPUs are interchangable.

Thanks!

[Harryc]

They are physically interchangeable, but the 533Mhz FSB CPU will not run at the right speed in a 400Mhz FSB machine.

[jasew503]

am I corect in assuming that it would only run at 1.2ghz and would be a performance drop to the 1.6 banias thats in there now?

[Harryc]

Yes, it is designed to run at 266Mhz x 6, but would actually run at 200Mhz x 6 = 1.2Ghz

[jasew503]

So would a Dothan running at 1.2GHz with 2MB cache on a 400 FSB still be faster than a Banias based Celeron-M 1.3GHz with 1MB cache?

[Harryc]

Probably ...

[pianowizard]

Don't bother with this swap. Just sell the M70 for parts. If you include the CPU, you can sell the M70 for a little more.

[jasew503]

I tried this swap in my moms Presario V4000 Machine last night just because the cpu is so easy to get to. The machine originally has a 1.3 Celeron with 1mb cache, and swapping the 1.6 Dothan in it running at 1.2ghz actually got worse perfomance by quiet a bit. Strange thing is the 1.3 celeron gets almost 1000 points higher on cpumark 2.1 than the 1.6 Banias P-M in my T41.