ASUS P8H67 Can I use different memory modules?

[oa786gunnerhq]

The motherboard only has 2x DIMM slots. And I already have a:
Corsair 4GB (1 x 4GB) LP Vengeance DDR3 1600MHz DIMM CL9 CML4GX3M1A1600C9 - my motherboard only supports 1333MHz so it successfully runs at 1333MHz

I want to add either a 2GB or 4GB to enhance my performance, would this be possible with another branded memory module?

 

[Orcvader]

Yes. Download CPU-Z and see what speed + timings the RAM is running at, then try and get something similiar.