DDR2 and DDR3 RAM motherboard capatibility issue

[DavidL87]

My motherboard has 2 X DDR2 slots and 2 X DDR3 slots. I recently bought 2 X 4GB DDR3 sticks to put into my computer. I am currently running 2 X 2GB DDR2 sticks. Are the two RAM types compatible?

When I installed the DDR3 RAM my computer will not turn on. I have yet to try to take out my DDR2 sticks and just use the new DDR3. Will that make a difference?

Thanks.

 

[mailpup]

It is likely you can run only one type of RAM at a time. What does your motherboard manual say about this issue?

 

[cliffordcooley]

^^^^ +1
It's been my understanding that motherboards running two different types of RAM, can only run one type at a time.

 

[SNGX1275]

Yep, it will make a difference. Remove the DDR2 RAM and all will be well.

 

[DavidL87]

Thanks