Memory placement question: For best stability, which DIMM slots get which 128MB sticks of RAM?

[|TOAST|]

I have a Soyo 6BA+IV with a P3 500 overclocked to 750, which means my FSB is 150MHz. For a year and a half I have been running this setup with 2x128MB RAM from Mushkin of their HSDRAM which does 150MHz at 3-2-2 stabily. The setup has been rock solid under WIN98SE, NT4 (SP5, SP6a), WIN2K (no SP, SP1 and SP2). I recently added 2x128MB Corsair PC150 CL2. From my understanding I do not need to change the 3-2-2 settings and I can just add the 2x128MB Corsair sticks to the current configuration. I moved the Corsairs sticks to DIMM slots 1 and 2 since they have the ability to be faster and would be accessed first. I then moved the old Mushkin RAM to slots 3 and 4. Is putting the slower RAM sticks in the last two slots bad? Or should I keep the current configuration? OR does it not matter?

 

[Xmenxmen]

If all the memory gets access, it really does not matter. From what I have been told, it's usually good to put the slower memory first as the faster one can accomodate with them.

 

[|TOAST|]

That is what I suspected since I have now experienced some system instability. Anyone else have some more input?

 

[|TOAST|]

Update: the system does not boot with the Mushkin RAM in the first two slots and the Corsair memeory in the last two DIMM slots. Weird... now I think I want to check for stability of the memory timings with just the Corsair memory in... (I guess this will test the stability of the 3rd and 4th DIMM slots also since they will not be used and therefore could be the culprit).