I have a giftcard for a PC shop for €175 and could add a little extra to that and grab either a Gigabyte GTX 1660 OC 6GB for €249 or a XFX Radeon RX 590 8GB Fatboy for €239. I have a ASUS ROG STRIX 960 4GB card atm.
I have an 27" AOC 144 hz Freesync monitor @1080p which makes me lean towards the R590 card. However, the GTX card is a little faster and less power consuming. sitting at a 550W PSU I am worried that the R590 card will be too power consuming especially if I wanted to do further upgrades in the future.
On the other hand, I hear that wow is more CPU reliant, so I could also go down the route of grabbing a Intel core i3 7300 @4,0 GHZ for €180 - I am sitting on a Intel Core i5 6402P @ 2,8 GHZ atm.
What would you guys do ? What would you consider the biggest upgrade - I am only playing WoW btw.
The GPUs are functionally identical in performance, within margin of error in most things. Power shouldn't be a worry for you, 550W is enough. Quick napkin math would put you at ~400W with your CPU and the 590. These days you have to try super hard to go above 500W. I'm talking 9900k+2080ti only pulling ~450W. Neither are super good value though, and the 590's get super hot
As for buying a 7300 to replace your 6402p : If it performs like a 6400, don't. At all. Not only is the 7300 2 generations old, it's also worse than the 6400 by a decent margin. Upgrading your CPU would probably be a better bet for WoW performance though, but it'll be more expensive than the GPU since you'll need a new MOBO, CPU, and RAM