currently using Corsiar xms 4x2 800 Mhz running windows 8.1 x64.
the spec for the board calls for:
P45/ich10r intel FMA
1600/1333/1066/800 MHz
4 x DIMM, max. 16GB, DDR2 1200/1066/800/667MHz, non-ECC, un-buffered memory
like to increase to at least 12 GB by replace a pair with 2x4GB
but...