Hi, I have a Gigabyte X58A-UD3R and 6GB of Kingston Hyperx KHX1600C9D3K3 (3x2GB) and wanted to get 12GB for the other 3 slots. Would the mismatch between slots still work? It would be 3 at 6GB and 3 at 12 Gb it would all be the same brand and model. Any help would be greatly appreciated **NOTE** My OS is Windows 7 Home Premium x64