socket 479 upgrade

[xsilver]

got a ibm r50e and using cpuz checked that it has a 1.4ghz celeron M socket 479 cpu.

however after checking on ebay 99% of potential upgrade cpu's are socket 478 (according to the intel spec finder site (after putting in the code)

what gives?
were there really few socket 479 cpu's around in the day?

btw. im in australia so ebay usa may have plenty but australia = small market.

 

[TheStu]

Socket 479 is still around, my laptop uses it and I have a Core Duo. Core 2 also uses that socket iirc.

So long as your processor is actually replaceable, you should be able to swap it out for a Pentium M since I don't think that chipset supports the Core Duo or later processors.

 

[xsilver]

yeah - I think it was a 855pm chipset - does that even support 133mhz fsb?
the ibm/lenovo site is so crap - cant find squat information

 

[stevty2889]

Originally posted by: xsilver
yeah - I think it was a 855pm chipset - does that even support 133mhz fsb?
the ibm/lenovo site is so crap - cant find squat information

855 chipset only supports 400mhz(100mhz x4) FSB CPU's, should support Banias and 400mhz FSBDothan cores. It does not support 133mhz FSB, core duo/core solo or core 2 duo. They sometimes are labled as socket 478 CPU's, but don't mix them up with pentium-4's or P4M's or mobile pentiium 4's.

Does your Celeron-M have 1mb of cache(dothan based) or 512k cache(banias based). If it has 1mb of cache, I wouldn't even bother trying to get a pentium-m, unless you are worried about battery life. The 1mb cache celeron-m's perform as well as their big brothers, just lack the power savings features.

 

[Mingon]

In actual fact the socket 479 processors only have 478 Pins! two are in a different position compared to desktop 478 cpu's

 

[addoraa]

if 400fsb

pentium M 745 400fsb $100 4 or 5 weeks back these were over 200.
http://www.ewiz.com/detail.php?name=MPM-745

pentium M 735 400fsb $78
http://www.ewiz.com/detail.php?name=MPM-735

Prices have really dropped on some of the pentium M's

Andy