Sorry I don’t think that will work. You really wont know for certain until you try. But from the owners manual it says this. Memory modules of different sizes can be mixed within a memory channel (for example, 2-GB, 8-GB, and 4-GB), but all populated channels must have identical configurations. Page 130 support.dell.com/.../HOM.pdf So I would say it will not work. And if it does it will not run at the full potential. Thanks.
Hi All, Currently i using 20GB Arrangement is as below A1 - 4GBA4 - 4GBA7 - 2GBA2 - 4GBA5 - 4GBA8 - 2GBA3 - emptyA6 - emptyA9 - empty Now i have 2 more RAM of 2GBDoes below arrangement  work ?A1 - 4GBA4 - 4GBA7 - 2GBA2 - 4GBA5 - 4GBA8 - 2GBA3 - 2GBA6 - 2GBA9 - empty Thanks in advance.
PowerEdge R710 RAM 20GB