CPU upgrade on a 2647 86G T20

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badgersbum · #1 Post by **badgersbum** » Sat Jun 14, 2008 6:48 pm

Hi wonderful tech type gurus.
I am a happy amateur over in Englandshire in the good old U of K; I have resurrected an old T20 and upgraded the HDD to 40GB and the memory to 512MB. I thought that the next logical step would be to up the CPU. I have the chance to get my hands on a dead T23 with a good processor and video card but not much else so my question is, will the processor (1Ghz) just drop in and be happy or would I need to upgrade the fan/heatsink as well?
Thanks for reading and any help would be much appreciated!

#2 Post by **RealBlackStuff** » Sat Jun 14, 2008 8:18 pm

Welcome to our Forum.
I'm afraid you're out of luck.
The best that you can do on your model T20 is a 900Mhz Intel SL53T (P/N 08K3346) or a 1GHz Intel SL53S (P/N 08K3392) or if you can find it, an Intel SL5TF (no IBM P/N).
In all these cases you first need to update the BIOS and the Embedded Controller Program, and you also need to get your hands on the (larger) CPU-fan of a T22 (P/N 26P9317).
The 1GHz (or any other) CPU from a T23 has the wrong (faster) FrontBusSpeed and will not work in a T20/21/22.

badgersbum · #3 Post by **badgersbum** » Sat Jun 14, 2008 9:45 pm

Thank you, most appreciated.