Why is my 260x not a huge leap from intel's 2500HD graphics?

I recently purchased an r7 260x 1GB GDDR5 OC edition card and my settings stayed the same since I had intergrated graphics game/intergrated fps/ 260x? Fps
TF2/45/110
Minecraft/35/60 (someone with a MUCH weaker gpu and a lower end cpu got a load more fps)?
L4D2/40/60
Hexxit(moded minecraft)/60/65
and Tactical Intervention which I will no longer play/30/42
I don't understand why my fps are not so dramatic increases
specs
i3-3220 3.3Ghz
6GB DDR3 1333mhz
r7 260x 1GB GDDR5 OC
and just a standard hard drive
motherboard is cheap but has features like sata 6GB/s and USB 3.0
I installed the drivers from the disk and when I decided to check windows for an update I got nothing!

Added (1). I run all games at 1080p

Sounds dumb, but did you plug into the 260x's vga or dvi port and not the motherboard's?
how is a jump from 45 to 110 in tf2 not an improvement? You bought a mid range card, not a 290x.