Page 1 of 1
problem upgrading thinkpad 600 2645 memory
Posted: Fri Sep 22, 2006 9:14 am
by craigm1
put 2 sticks of PNY 128MB PC100 SODIMM 100MHz
the computer is recognizing the second stick as 64meg
only 224meg comes up
any solutions?????
thanks in advance
Craig Margolies
Posted: Sat Sep 23, 2006 7:44 pm
by Catlover32
I have this same problem, but I bought a 66mhz RAM card, because I read that 100mhz wouldn't work. Previous posts have said that it could be that my 600 is one of the earlier models that don't recognize more RAM.
Posted: Sat Sep 23, 2006 8:06 pm
by tfflivemb2
Some PC100 will work, but generally when it comes to the vanilla 600s, it is best practice to only use PC66 ram, to get the full amount. With PC100, the second slot almost always reads 1/2 the ram.
Posted: Sat Sep 23, 2006 9:03 pm
by cure
Mixing Pc66 & PC100 memory on a 600 is ok, bad, or very bad?
Posted: Sat Sep 23, 2006 9:13 pm
by tfflivemb2
cure wrote:Mixing Pc66 & PC100 memory on a 600 is ok, bad, or very bad?
It isn't necessarily about whether or not that you are mixing them, but rather the use of PC100 ram, period.
The FSB for the 600 is only 66mhz, whereas the 600E is 100MHz.
PC100 will work, if you have nothing else, but it will not always read the full amount. (ie. 224 instead of 256)