So, I need a new GPU this month (donating my 960 2GB). Help me decide between a GF 1070 and a Radeon 580?
Rest of system: i5 3570 non-K, 16 gigabytes DDR3, AOC G2460PF monitor 1920x1080, 144 Hz, Freesync, 550W XFX bronze PSU (6 years old), SSD+HD
1070: £380, no Freesync but should be at 144 FPS for a lot of games anyway, unless my CPU will keep me below 144?
580 8GB: £290 which is way over the launch price, freesync, higher power consumption for lower performance.
580 4GB: £240, same as the 8GB but not so overpriced and limited VRAM. How much does that matter?
I don't play demanding games that often and I'm OK with reducing texture quality but I care about high framerates and responsiveness. I would like to use Freesync, although games at solid 144Hz already feel really smooth to me so the 1070 is an option, especially since I also like my system quiet.
I would really like to play Fortnite BR, UT4 and DOOM at solid 144 FPS or close to it with Freesync. The next games I'll be buying are Cook, Serve, Delicious 2 and South Park TFBW though so a 1070 is overkill most of the time.