1 of 1 people found this helpful
Yes, they'll work. The faster RAM (CAS9) will default to the slower RAM (CAS10). If you have both color coded memory slots occupied it will run in dual channel.
Thank you Major A! .. so if I fill all the slots : 4-8-4-8 ,it would deliver me 24gb of ram ..
ok Im sure now , correct me if Im wrong , but I was afraid that if I fill them whit 4gb for the first slot this would downgrade or lower the 8gb performance ....
and yeap giga z77 dh3 it has blue-white-blue-white slots
It will work. Typing this on a computer running 2 different sets of DDR2 800 (2x1GB Elpida and 2x2GB A-Data). Working just fine and has been for a while now. Did something similar with my old C2Q 9550 machine, had 2 different OCZ kits running fine. The only tid bit of advice to help ensure stability is to run the slower kit in the slot 1 and 3. Then the faster stuff in slot 2 and 4.
Here's a screenshot of my mismatched RAM in CPU-Z.