Help regarding new RAM selection

[Kavneet Rekhi]

Hi
i have Intel DH55TC which has dual channel support
I was using two 2gb kingston RAM's.
I ordered one Corsair Vengeance DDR3 4 GB (1 x 4 GB) PC DRAM (CMZ4GX3M1A1600C9)
from here
and have installed it as well but now after some research i am a bit confused, should i return it and buy some other ram

So is it a good idea(is everything compatible) or is it a waste as my board supports DDR3 1333 / 1066 MHz DIMMs and i suppose this RAM is 1333 MHz (Specified), 1600 MHz (Test) and is it that i'l have to order another same ram for best performance( because of dual channel thing)

Other details of my system are as follows:
http://valid.x86.fr/nyjj4l
http://i.imgur.com/LdRYX2r.jpg

So it would be really great if someone could guide me with this
Thanks

 

[C12Friedman]

CPU-Z validator is showing 8GB at 1333MHz with timings of 9 so it seems your added 4GB is working properly. You can run MemTest86 just to check complete operation but it looks okay to me.

 

[Kavneet Rekhi]

Alright thanks
And what about the dual channel, should i buy another one?

 

[C12Friedman]

You could purchase another but I'm not seeing the need, you're running dual channel for the first 4GB so I'd think that'd suffice. Try with the current configuration, I suspect you wouldn't be able to tell the difference adding another 4GB (even just for dual channel function).