From Amazon
Corsair CMV8GX3M2A1333C9 Value Select 8 GB (2 x 4 GB) DDR3 1333 MHz CL9 Mainstream Desktop Memory Kit
Gadcet
Corsair CMV8GX3M2A1333C9 Value Select 8 GB (2 x 4 GB) DDR3 1333 MHz CL9 Mainstream Desktop Memory Kit
Clove Technology
Corsair 8GB DDR3 1333MHz memory module 2 x 4 GB