I'm on a similar PC setup, and my girlfriend went from PS3 to PS4. I often see them at the same and I'd say a solid 8 graphically, mostly due to the reduced resolution. You're also further from the screen meaning UI tends to need to be bigger, so you do miss those pixels. I upgraded my PS4 HDD with a hybrid SSHD and I also highly recommend doing that. I've got a raid 0 SATA array and she loads faster than me into every zone/dungeon. Disk access speed also accounts for delays/reduction in visible enemies and players, so it's not just fast-load convenience factor.