Will this p3 work with my 600E?

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tonepaq · #1 Post by **tonepaq** » Sun Apr 30, 2006 10:18 am

Before I buy this Please members with more experience tell me will this cpu work with my 600E? 2645-55U

link

Granted I do the L2 cache thing? Does it have to say something about speedstep? (I am somewhat clueless about the feature "speedstep")

Also is it a good deal pricewise? Or should I search elsewhere?
Would be a great step up from my current 366mhz!

Thank you.[

Website · #2 Post by **tfflivemb2** » Sun Apr 30, 2006 10:24 am

The 55U is a different beast that the regular 600Es. I had poor success using a PIII CPU. Here is the threadthat outlined my trials and tribulations in trying to upgrade a 55U. You can also search the forum for 55U and might find some more info.

The 55x and A5x series 600Es are all different from the other 600Es. They even have a different BIOS.

tonepaq · #3 Post by **tonepaq** » Sun Apr 30, 2006 12:01 pm

wmarqusm wrote=
FYI. I have a TP 2645-55U. I noticed after a PIII-650 (MMC2) upgrade that the fsb was running at 66mhz. I cut pin 25 on the sg577 clock
generator which is tied low on this motherboard and then tied pin
25 to vddref - pin 48 with a 1k resistor (I could not locate the pull-down resistor after searching for an hour with a VOM - but it is there Smile.

TP now boots at 100mhz fsb - runs great.

Have you given up then on your upgrade of the 55U?
Think maybe I'll just try to find a good 600X mobo or something.
Will my 600 2645-45U accept a p3 650mhz?

Website · #4 Post by **tfflivemb2** » Sun Apr 30, 2006 12:24 pm

I have already sold off the 55U to someone that wanted a simple linux system, with no plans for modding.

I am not sure about upgrading a 45U, as it is only a 600, not a 600E. The 55U had been my first "mod". I have worked on over 250 600 and 600Es but it has been mostly repairs and rebuilds. I never stepped outside of the box until I was given a 500MHz and a 750MHz processor. Then I decided what the heck....lets try.

I was able to get the mod to work in a "normal" 600E.

As for the quote about cutting pins...not sure if I would be willing to try that...and even still that is only a work around for adjusting the FSB.

#5 Post by **AlphaKilo470** » Sun Apr 30, 2006 12:28 pm

You can upgrade a ThinkPad 600, just not with a PIII. One of the key differences between the ThinkPad 600 and ThinkPad 600E is that the unlike the 600E which uses MMC-2 CPU boards, the ThinkPad 600 uses MMC-1 and if I'm not mistaken, the fastest MMC-1 module that will work in the ThinkPad 600 is a 400mhz Pentium II.

Website · #6 Post by **tfflivemb2** » Sun Apr 30, 2006 12:35 pm

Alpha is exactly right. I wasn't even thinking about the different socket types. (I guess this is what I get for doing too many things at one time.....gotta love a 3 year old boy!!)

tonepaq · #7 Post by **tonepaq** » Sun Apr 30, 2006 12:49 pm

One last thing while I have your attention. A 600X system board will strap right in my 600E's base, right? Nothing special I gotta do or buy?

#8 Post by **AlphaKilo470** » Sun Apr 30, 2006 1:12 pm

I'm afriad not. You might be able to fit a 600X motherboard into a 600 or 600E shell but you won't have access to the mini-PCI slot. There are a few small differences in chassis between the two models. If you want to upgrade to a 600X, the best option would be to buy a working bottom half of a 600X and move the keyboard and screen from your 600E to it.

ChefJohn · #9 Post by **ChefJohn** » Sun Apr 30, 2006 7:18 pm

Let me see if I have my head around this....
I have a 2645 55U 600e running with a 300 PII.
If I were to drop a 500 PIII into it it would in fact only run at 2/3 500 ie 335 similarly a 450 PIII would run at 301?
And apart from hardware hacking that would be it?

THe powerleap software will only enable the L2 cache?

Thanks for explaining this

Website · #10 Post by **tfflivemb2** » Sun Apr 30, 2006 7:19 pm

I am not quite sure as to the 2:3 ratio, or the reasoning for it. I do know that I couldn't get it beyond about that point.

ChefJohn · #11 Post by **ChefJohn** » Sun Apr 30, 2006 7:40 pm

I was reading theat the bus speed on the 600E is set at 66 Mhz and the PIII is rated for 100Mhz. hence the true speed of the CPU will be 2/3 of its rated speed or have I got it completely wrong?

serverbook · #12 Post by **serverbook** » Sat May 06, 2006 5:17 am

it will run 100 unles you got one of them beaut

beta mobos
that only allow 66fsb max which is rare for a tp600e.
if 100 fsb is no go you can go pentium11 400 or celeron 433 or 466
which seem to be faster over the 300-366 variants regardless of less cache.

ChefJohn · #13 Post by **ChefJohn** » Mon May 22, 2006 8:36 pm

I put a P3 500 into my 600E (55U even)
Powerleap sayss the FSB is running at 100
The L2 cach is enabled and it is running at 500.
I put two 128 Mb sticks into the unit from Khalon (It counts up to 292 on POST though).

Will this p3 work with my 600E?

Will this p3 work with my 600E?

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