Corsair XMS3 HX3X12G1333C9 12GB (6 x 2GB Kit) PC3-10600 240pin DIMM Desktop Non-ECC DDR3 Memory Full Technical Specs, Reviews and Benchmarks
[Corsair XMS3 HX3X12G1333C9 12GB (6 x 2GB Kit) PC3-10600 Non-ECC DDR3 Memory Full Technical Specs]

Does anyone know if you can just use 4 of these instead of the 6, someone has offered me a set cheap but my motherboard does not have 6 memory slots?
((Answered by electrobyt)) It is not a requirement to have all six installed, use four if you only have room for them and save the others as spares.