Should memory cards match? For example, let's say you have 768 MB RAM installed in your computer (one being 256 and the other 512). Isn't that wrong? And, if they don't match, what effect does this have on the PC's performance?

Thank you =)

12 Years
Discussion Span
Last Post by tarik25sea

I dont see any problem with it. Its just one of those things where we are used to having things even and then as soon as there not we start thinking that there must be something wrong with doing it uneven. That and the RAM makes would much rather you buy 2 512 sticks then 1 512 and a 256 because they make more money that way.


no it wont effect your pc you can either have a 1 Gb or 512 or both simultaniously

if iam wrong plz correct me


Some types of ram it has to (DDR?)
Sodimms (laptopa) dont as my tp has 384 - 1x 128 and 1x256

Go on crucialmemory.com and run the wizard it will tell u whether it needs to be in matched pairs or not


The memory dimms do not have to match, not in speed nor cas latency etc, you may put whatever you wish in the slots. There are a few exceptions to this however. First, if you are running Dual Channel memory, then you will need identical Dual Channel memory dimms. Also, on some boards, they have problems with you running 2 regular dimms in dual channel slots, and will try and clock them to dual channel, however, this is an entirely separate problem. As it stands there are no conflicts with putting all sorts of different memory in most systems.


Thank you everyone for your help. I finally am able to put this issue to rest once and for all!


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