4GB @ 1333 CL 7 with 8GB @ 1600 CL 9

[karmablah]

Model of the motherboard:
GIGABYTE GA-890GPA-UD3H AM3 AMD 890GX

Model of the memory:
F3-10666CL7D-4GBRH
&
F3-12800CL9D-8GBXL

Model of the CPU:
AMD Phenom II X6 1090T Black Edition Thuban 3.2GHz

I was just wondering if it would be possible to use these two different sets of RAM together in one system? One is rated for CL 7 @ 1333 and the other for CL 9 @ 1600 on an AMD motherboard. If yes, what voltage and settings should I use?

Thanks

[Tradesman]

Can't hurt to try, I'd prob start at 1600, 9-9-9-24, CR at 2N and DRAM voltage at 1.55, with the 1600 sticks as primary DIMM slots and the 1333 in the secondary. Will prob have to raise CPU/NB to run stable, if so start with where it's at and gradually raise it in say, increments of .02

[karmablah]

Even with the 2gb sticks in the primary DIMMs (didn't wanna remove cpu cooler) I managed to get the two sets working together. I boosted DRAM voltages to 1.56 and my CPU/NB up by 0.02 like Tradesman said (but only had to do it once!) to get it running stable.

Dual Channel 12GB @ 1600Mhz 8-8-8-24 1.56 1T

Thanks

[Tradesman]

Great, glad to hear it, Enjoy!