New graphics card

[shadowtdk]

so my current graphics cards is the AMD Radeon gHD 6670 and I am looking for a new one.
I have around £250, and I am currently looking at something like the AMD R9 390.
What I want to know is if there is a bette card for the price range for 1080p/1440p gaming, or if this card will do me fine for the next 3-4 years.

 

[iballew]

I need your system specs to recommend you a card (psu, cpu, motherboard etc)

 

[shadowtdk]

I need your system specs to recommend you a card (psu, cpu, motherboard etc)

I am slowly but by bit upgrading my pc, so these are just temporary conponants.
My ran is a stick of 8gb that I can't find a brand for.
My processor is an AMD FX-4350.
My motherboard is a Gigabyte 78LMT-USB3.
As of the moment, my power supply appears to be an unbranded 500w PSU, but as soon as I order my new graphics card I am ordering a Corsair 750w modular power supply.

I don't really care about bottle necking as I am going to upgrade the rest of my pc, but I'm just starting with my GPU because I hate playing my games at 720p when I spent £160 on a 1080p monitor.