Mobile Intel Celeron and Pentium III differences?

[ArchStudent]

Other than speedstep, what is the main difference?

Will the Pentium III with speedstep work in a system that only supports 1.5-1.7V ?

Archstud?

 

[Mingon]

The mobile P3 celeron started at 500mhz and had a 100mhz bus and 128k of cache, bit of a dog really. This eventually ended up with the Tualatin core which toped at 1.4ghz with 256k of cache and a 100mhz bus speed. This was faster than the Normal P3's which stopped at around 1ghz. I dont think I ever saw a laptop with the PIII-S cpu which had 512k of lvl2 cache / 133bus speed.

Asa side note the celerons upto 700mhz didnt have speedstep, nether did the original 500mhz P3.

 

[ArchStudent]

Thanks for the info

What if someone wanted to upgrade their system from onen of the original PIII 500MHz that did not have speedstep to say a 700MHz or 800MHz PIII that has speedstep... would that pose a problem because the new chip has speedstep?

thanks

 

[Mingon]

No as long as it physically possible to remove the chip, most early mobile chips were soldered directly to the motherboard.

 

[ArchStudent]

groovy! My system uses the Molex 2 (I think that is what it is called) socket, and the cpu can easily come out. I just bought a Mobile PentiumIII Micro-PGA2 900MHz... will post feedback

Still not too worried about the heat... *fingers crossed* should be a very noticable upgrade from the current Celeron 450

I did some some tiny dip switches near the socket... I wonder what they do. I know that this is an Intel board... do you think I could find the specs for what the switches do, or ask Intel what the switches do?

 

[ArchStudent]

should say "I did see some..."

 

[ArchStudent]

COOL!!! I popped in a 800MHz micro-pga2 PIII and the notebook booted up!!! It reads as a PIII 666MHz in the BIOS and in Windows it reads as 650MHz using DXDIAG.EXE and a couple of other motherboard id programs

The notebook is faster... I still want to see how far I can push it... will experiment with the DIP switches near the cpu socket soon.

 

[Mingon]

try disabling power management and then check with wcpuid. It could be that 650mhz is the speedstep operation

 

[ArchStudent]

hmmm... funny I set the computer power scheme as always being on, but it still seems to only want to run at 650MHz.

Either I missed some setting in Windows XP, or I will have to use those dip switches eventually

Thanks for the help Mingon