i'm not sure where 2 post this but anyway..i just wanted 2 ask if u can mix a pc150 n pc133 memory stick, both at 256 sdram. i tried it but had a lot of problems with games ie. it automatically goes back 2 windows after playing a game for a while...also it restarts spontaneously everytime i run a virus check.
thnks in advance

Which CLK you re using in the bios?

You must set your CAS level to match the slowest RAM, usually CAS3. Many sticks of PC133 run fine at CAS2. Watch out! Some BX motherboards take a finite number of RAM chips, so you must avoid 2 sided RAM. It can cause the exact symptoms you are having.

Goof luck,

Try setting your BIOS to PC133 and CAS3, if you still get the problems then it may be a compatibility problem between either your different ram or your new ram and your mainboard.

I know a lot of VIA kt133 boards crash when all thier ram slots are filled, try checking your mainboard makers for a BIOS update that might fix any problems.