A memory question.

**Ebisoba** · May 11th, 2002, 05:27 PM

My motherboard has 2 slots for PC2100 and 1 slot for PC1600. Is it ok if I have a mixture of them?

**Wizzard~Of~Ozz** · May 11th, 2002, 05:28 PM

I've never heard of this setup? don't see why it would exsist. What board do you have?

**Atomic Rooster** · May 11th, 2002, 05:29 PM

Yes, but the PC2100 will run at the PC1600 speed.

**Ebisoba** · May 11th, 2002, 05:38 PM

It's the Soyo K7ADA board. Damn this sucks. I was thinking about getting more memory, but I don't want to waste a good 128 meg stick.

**Ebisoba** · May 12th, 2002, 10:32 PM

I just realized that I might misunderstood you AR

I know if I put the PC2100 in the PC1600 it will run at PC1600's speed, but what about the other 2 sticks? Will they also be running at the speed of PC1600?

**GroundZero3** · May 12th, 2002, 10:34 PM

the ram will run at the lowest speed of what ever ram is insalled on the mb

**MDS** · May 12th, 2002, 10:38 PM

edit GZ3 beat me to it

**KenKun** · May 12th, 2002, 10:45 PM

My motherboard has 2 slots for PC2100 and 1 slot for PC1600.

I think one of us is confused

.. there is no such a thing as a slot for PC1600 and 2 slots for PC2100 on the same board ...
All memory slots on the same board can take either PC1600 or PC2100 sticks.

All RAM will run @ the FSB that you choose by jumper or BIOS setting ... running PC1600 @133FSB is considered hard OCing .. and might cause instability ...

Regards

**Ebisoba** · May 12th, 2002, 10:54 PM

Alright, this is straight from the manual,

"Supports PC2100/PC1600 DDR SDRAM up to 3 DIMMs and using system memory up to 3 GB. Supports symmetrical and asymmetrical DDR addressing."

"This motherboard can only support 2 pcs of PC2100 DDR module, we suggest using DIMM1 and DIMM2 for PC2100 DDR module."

edit: looks like if I set the frequency to 100mhz I can have upto 3 slots of PC1600 and if I set it to 133mhz(currently set at) I can only have 2 slots of PC2100. So what happens to the 3rd slot? Does it become useless?

**KenKun** · May 12th, 2002, 11:26 PM

Well, your system *might* become instable when using the third slot @133FSB...
So it is better not to use or limit your system to 100FSB and use the three slots ...

I used to have an ECS MoBo that will refuse boot-up if i used the third slot ... and if it booted the OS will crash at once ..

Regards