I'm running some 2k textures and some overhauls. Tried various ENBs and Tetrachromatic is a good one with good perfomance. I'm running all that on a AMD R7 360 2GB Vram, so i think you will be fine. I play at 1080p and using Windows 7. Without ENB i get over 60 fps and with ENB enabled i get over 30 after tweaking it a little bit. Anyway i limited it at 55 fps to avoid weird problems caused by physics :P Hope i helped. Have a good day!