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System became slow after upgrading the RAM
Posted: Sat Jan 05, 2008 5:20 pm
by gkarthik78
Hi,
My Thinkpad T60 (2623D6U) became slow after i installed 1 GB RAM. Now my system has 1.5 GB in total. .5 GB in one slot and 1 GB in another one.
Is the unmatched RAM causing issues ?
regards,
Karthik
Posted: Sat Jan 05, 2008 5:38 pm
by tylerwylie
If you installed slower RAM that could be the issue, as both modules are running at the slower speed instead of one at the right speed.
Posted: Sat Jan 05, 2008 8:00 pm
by XIII
The difference in RAM speed is not human-observable.
If you are running Vista, the cause is it. Vista likes to fetch a lot of programs to RAM. During the process, the system is very unresponsive but after that, you should see a small boost.
And, this only happens when you have more than 512MB of RAM.
Posted: Sat Jan 05, 2008 9:20 pm
by gkarthik78
both RAM are of same speed 667 Mhz and i am having only windows xp. Not sure which causing this issue
regards,
Karthik
Posted: Mon Jan 07, 2008 1:59 pm
by meekus
A stick of DDR2 PC2-4200 533 MHz RAM wasn't installed by chance?
The T60 (and specifically the 2623D6U which sports a CD T2400) requires DDR2 PC2-5300 667 MHz RAM at the very minimum. Any faster RAM (i.e. DDR2 PC2-6400 800 MHz RAM) will automagically down-clock to the correct PC2-5300 667 MHz speed since the memory will not run any faster than the processor and system board were designed to run.