Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Currently I have 1 RAM stick installed in my computer (the motherboard supports 4 sticks of DDR memory, see my specs here at my profile info) Kingston:

1 GB
200 MHz
PC3200

I've bought another stick that I could find in any possible computer center.
It is Hynix:

256 MB
333 MHz
PC2700

So what RAM should be first, faster or bigger?
My guess is that faster RAM should be first.

share|improve this question
    
You can buy larger memory sticks for good prices at crucial.com They'll have more selection for cheaper there –  Kurru Nov 6 '11 at 17:13
add comment

4 Answers

If I understand what you're asking correctly, then there's no difference which module is "first". In fact the distinction itself is irrelevant unless you're trying to make a dual-channel system, which is in this case impossible.

Anyway, the faster module will slow down to match the speed of slower module so both will work at the same speed.

share|improve this answer
    
Thanks for response. But I still gona try the newer stick in first slot –  Roberts Nov 6 '11 at 15:01
    
@Roberts Feel free to do so. –  AndrejaKo Nov 6 '11 at 15:10
add comment

If you have four memory slots in the typical [][] [][] configuration, just don't use two slots next to each other. Otherwise, it doesn't matter.

The best you can do is make sure the two sticks are on two different memory channels. At least that will save you one command state per burst with typical memory controllers -- it takes an extra command state to select which stick the access is going to if both sticks are on the same channel.

share|improve this answer
add comment

Depending on your motherboard it might be safer to put the slower module first. On one older system I had PC133 + 3xPC100 memory installed and the BIOS set the memory speed to 133MHz which ofcourse caused problems. In any case, running memtest86 for a night after adding the memory will tell you if the configuration you choose will work or not.

share|improve this answer
    
I have tried 256 MB 333 MHz first but it slowed the computer. –  Roberts Nov 6 '11 at 17:09
add comment

Just buy another 1 GB module and insert it to paired slot to double performance (i.e. run memory chips in "Dual Channel" mode).

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.