mixing memory brands/types

[biostud]

So I have 2x2 A-Data 2000x memory @1520Mhz rated at 1.6-1.8v, but with the current prices I would like to add some memory.

I'm not going to buy the same kit since its expensive compared to others.
So my question is:

Can I buy other brands and mix and do they need to be 1.6v+ to be compatible with my current memory?

I'm looking at different 2x4 kits rated 1600Mhz 1.65V
Kingston hyperX blu
Corsair XMS3

or if 1.5v is okay
Corsair Vengeance

 

[Blain]

Mixing brands is usually no problem.
When you start mixing speeds, timings and especially voltage ratings, you're asking for conflicts.

 

[biostud]

they're all rated CL9, so I'll just try to get some 1.65v then.