Recommend me a graphics card

i have the same spec as you
don't change the CPU, just overclock it at 4Ghz.
and take a GTX1070

i have a GTX980, and i can play at 1080P at full with all games.
and sometime in 4K !

my spec :
-Carte Mère: Asus Maximus IV GENE-Z
-CPU: Intel i5 2500k @4700 h24 (46*102,2) (@5100 en bench) GROS VCore :/ mais tiens bien depuis 6 ans !
-Ram: G.Skill RipJawsX 8Go(2*4)DDR3 PC3-12800 + 8Go autre !
-Ventirad: Corsair H60 push/pull 2*NoiseBlocker SilentPro PL1 900rpm
-SSD: OCZ Agility2 240Go
-HDD: WD Green 2*2To + Seagate ST2000 2To + Seagate 5To (un Seagate HS :/)
-Alim: Corsair Hx750w
-Carte Graphique: Gigabyte GTX 980 "N980G1 Gaming 4GD" "4K POWAAA !!!"
(AVANT -> SLI eVGA GTX570 SC)
-Boitier: LianLi v354b
-Ventillo: 2*NoiseBlocker SilentPro PL1 900rpm (120mm) sur le H60, 120mm LL sur façade, 120mm LL extraction arrière, 140mm LL sur TOP
-Ecran: Samsung 24' B2430H (1080p, HDMI/DVI/VGA)
-Son: Logitech Z323 - Enceintes 2.1 RMS 30 Watt - Noir
-Casque-Micro: Astro A50 (Compatible PC/PS3-4/Xbox 360-One)
-Clavier: Logitech Dinovo Edge (HTPC --> génial)
-Clavier Gaming: Razer Nostromo
-Manettes: GamePad x360 sans fil, + GamePad XboxOne
-Joystick: Saitek x52
-Souris: Logitech G700
-En double écran: TV UHD/4K LG 55UB850V (WebOS, Dalle IPS)
-Casque VR: Oculus Rift DK2 (revendu)

 

Potential system instability/hardware damage if you mess it up. Just look up some guides and you should do fine, it's not particularly difficult

 

You don't really need a cpu upgrade for now as long as you get the good cpu oc, get that RX480 for more.

What are your requirements to begin with.

 

1070 probably as it's getting cheaper

 

No I meant give us information on what resolution are you gonna game, what types of games are you looking forward to game at.
The RX480 destroys 1080p and with new DX12 titles and with Vulkan it can pretty much do 1440p as good as the GTX1060, if not better. Go for the RX480 Custom cards, you won't regret it.

It's powerful enough to get the job done easily, cheap enough so that you can save money to get a new cpu-motherboard overtime and get another RX480 at a lower price, by the time you upgrade your rig.

 

Then an RX480 is the cheapest that will give you the performance you are looking for. If you want less power draw, the GTX 1060 consumes about 30% less power, has slightly better performance, but costs about $50 more (I don't know how that translates into the European market).

 

Yeah the RX480 should be good enough

 

my recommendation is for a card thats a few years old but still works with the most modern games. a gtx 750ti sold by MSI. you can get a factory refurbished one for about $100. its a neat 2gb GDDR5 card if you're on a budget like I was at the time i got mine. also, whats your psu wattage?

 

Go RX 480 or GTX 1060. choose whatever you want of you prefer one manufacturer over the other. keep in mind that the gtx 1060 uses slightly less amounts of power, and has a slight increase in performance

 

It should say somewhere on the PSU itself. If you have a box laying around with the manuals for all the components and extra parts like spare SATA cables and such (I keep all that in the mobo box) you can check the manual for the PSU. I'm not aware of a way to check the PSU wattage in software.
I vote for the RX 480, seems to be a solid card, but you can't go wrong with the GTX 1060 either.

 

Power supply.

 

http://www.tomshardware.com/reviews/best-gpus,4380.html#p1

 

Just uh, be sure you have really good cooling and airflow when you go about it, things can go really bad really fast.