Best GPU for this system.

4745454b

Titan
Moderator
I personally consider cards like the 710, 730, 1030, etc to be IGP replacements. They are really too weak to do any kind of modern gaming. You said lower end games which can work, but overall they won't provide a great gaming experience. As I've been saying, you really need something like the 750TI to handle games at 1080. Anything less than that and you'll need to lower the res and down down details. The 730 and 1030 just can't game at 1080.

http://www.tomshardware.com/reviews/nvidia-geforce-gt-1030-2gb,5110-4.html

Here is Tom's review of the 1030, which is the faster of the 1030 and 730. Here in BF1, even at 720 resolution it can't hit 60FPS with medium details. The same is true with Doom. 720 res, medium details, and the 1030 is still sub 60FPS. It's possible to do some gaming with these chips, but for the most part they aren't going to let you game at 1080 with good details.
 

4745454b

Titan
Moderator
5min of looking and you couldn't find any?

As a general rule I don't provide exact help like that. Just look for CSGO results with the 730. You should be able to find 720 and 1080 results. Your res will be in the middle, as will the scores.