CL9 with CL8 compatibility

[acsakvith]

Hi,

Currently im running in DDR3 1333 9-9-9-24 2GBx2 (F3-10666CL9D-4GBNQ) dual channel

Im planing to upgrade more 4GB of RAM
but my store have only F3-10666CL8D-4GBHK 2GBx2 DDR3 PC3-10666 CL8 RAM (8-8-8-21)

Will it be compatible ?

MotherBoard :Gigabyte GA880GA-UD3H 3.0
CPU : AMD PhenomII 965BE

Please help
Thank you.

[Tradesman]

Might be able to get them to play together at 9-9-9-24 with a little extra DRAM voltage and CPU/NB....but any time you mix sets (even the same exact model) it can be problematic..especially w/ AMD