2x4Gb vs 1x8 gb price to performance difference?

I'm looking to buy Kingston 1600 MHz ram with the options of 4gb and 8gb

Now my mobo has only 2 ram slots and 8 gb will cost me about 1200rs( about 20$) less than 2 4 gbs..I will only be playing games on my desktop. Now I have read the performance difference might be 5% to 10% lesser in case on single 8 gb. But is it really gonna affect the overall gaming performance? Since I have cutdown on the processor also, chose i5 4570 over 4670 saving few bucks. I hope these things combined wont ruin and degrade my gaming performance. Do note I am willing to spend those extra bucks if 4gb x2 will really make a difference.
I play with a hd7750 at 720 p resolutions and soon will replace my GPU with r9 270x

Do give your suggestion guys, what should I do??
3 answers Last reply Best Answer
More about 2x4gb 1x8 price performance difference
  1. Best answer
    The 2x4GB will give better performance overall, but for primarily gaming with your rig the 1x8GB should be fine and doubt if you would really notice any real difference - in gaming DRAM is more a data conduit than anything else
  2. Alright thanks, going with 8gb module only
  3. Let us know how it goes
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