2x4gb or 1x8gb

i was just wondering if ill notice a difference in gaming and everyday use cause the single stick is like 20 bucks cheaper

Always go with the single stick over dual-sticks if you can. It will leave you room to upgrade, and it actually is a bit faster. Having all the ram in one place is easier for the computer to read than having several sticks of a smaller capacity.

*face palm*

Get 2x4 gb because then it will run in dual channel mode and will be faster

but is it gonna be noticebly better for the 20 dollars more that i have to pay