TheSloth
The Slowest One
It's 1600 Mhz only. the data rates are doubled in DDR Rams, so it's shows as 800 instead of 1600 Mhz.
The Brands do not matter, AAMOF many times you won't find the brand which the manufactures has supplied for your Laptop. For a ram to work in dual channel mode, the frequency and timings should match, not their brands.
I believe you should look out for this one , G.Skill DDR3 4 GB Laptop RAM (F3-12800CL11S-4GBSQ) - G.Skill: Flipkart.com this should work in dual channel.
Thanks for suggestion. Ok How about this one? Corsair DDR3 4 GB Laptop RAM (CMSO4GX3M1A1600C11) - Corsair: Flipkart.com