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Memory compatibility - DDR

8 posts · originally from https://geek.digit.in/community/threads/memory-compatibility-ddr.46770/

ApoorvKhatreja
ApoorvKhatreja Original post #1
Jan 18, 2007 at 10:30 PM
I have a D101Ggc Intel Motherboard which supports only DDR RAM. I just wanted to know that if I wanted to add another stick of memory to the other slot that is currently empty, what are the conditions so that it is compatible with the previous stick of RAM?
n2casey
n2casey #2
Jan 18, 2007 at 10:33 PM
Clock speed/frequency must b same for both RAM sticks.
ApoorvKhatreja
Jan 18, 2007 at 10:42 PM
So there isn't any issue with the size? I mean can I combine a 1 GB stick with 128 MB?
n2casey
n2casey #4
Jan 18, 2007 at 10:44 PM
Yes u can.
codename_romeo
Jan 18, 2007 at 10:45 PM
u can definitely add.....but then it is not advisable as both the modules will take different voltages.....so if u can then add a 1 gb stick n remove the 128 mb stick
ApoorvKhatreja
Jan 18, 2007 at 11:07 PM
How about a 512 + 256 ? And could you eloborate on the problems could arise with the different voltage intake?
n2casey
n2casey #7
Jan 18, 2007 at 11:35 PM
ApoorvKhatreja said:
How about a 512 + 256 ? And could you eloborate on the problems could arise with the different voltage intake?

It will work fine if both sticks have same clock speed.
Regarding voltage, in a condition of different working voltage, ur system can hang, errors related to memory can occur or system will not boot.
I faced these errors when I was trying to upgrade my friend's PC.