Which of these cards would be a better upgrade for me (Radeon HD 7850 vs Radeon R9 270)

[liamr]

Currently using a Radeon HD 6670, and i have been looking at the R9 270 range but have also been looking into a Radeon HD 7850


Current spec's
CPU: AMD Athlon 750K X4@4.0Ghz
Ram: 16gb
GPU: Radeon HD 6670 2gb vram
Motherboard: Gigabyte F2A55M-DS2


Cards i have looked at so far
1. http://www.scan.co.uk/products/2gb-xfx-radeon-r9-270-boost-28nm-5600mhz-gddr5-gpu-900mhz-boost-925mhz-1280-streams-dp-dvi-hdmi-plus

2. http://www.scan.co.uk/products/2gb-msi-radeon-r9-270-gaming-2g-28nm-5600mhz-gddr5-gpu-900mhz-boost-975mhz-1280-streams-dp-dvi-hdmi

3. http://www.scan.co.uk/products/2gb-xfx-radeon-hd-7850-core-edition-4800mhz-gddr5-28nm-gpu-860mhz-1024-cores-dvi-hdmi-mdp-plusfree-g

4. http://www.scan.co.uk/products/1gb-msi-radeon-hd-7850-4800mhz-gddr5-28nm-gpu-860mhz-1024-cores-hdmi-2x-mdp-dl-dvi-i

5. http://www.scan.co.uk/products/2gb-msi-radeon-r9-270-gaming-28nm-5600mhz-gddr5-gpu900mhz-boost-975mhz-plus-bf4-game

Things to note:
-I'm a gamer and recently bought this PC, i knew it would need an upgrade so i would like the upgrade to last a few years
-My budget is around about £150, i would prefer less but i might be able to go a little higher if i have to

 

[sosofm]

I recomend you Nvidia 760 is a little higher than your budget , is more performant than 270 and is more future proof for the next games.
Now is on sale : MSI GeForce GTX 760 2GB Twin Frozr Gaming Edition http://www.scan.co.uk/products/2gb-msi-gtx-760-twin-frozr-gaming-oc-28nm-pcie-30-%28x16%29-6008mhz-gddr5-gpu-1085mhz-boost-1150mhz-core

 

[liamr]

I recomend you Nvidia 760 is a little higher than your budget , is more performant than 270 and is more future proof for the next games.
Now is on sale : MSI GeForce GTX 760 2GB Twin Frozr Gaming Edition http://www.scan.co.uk/products/2gb-msi-gtx-760-twin-frozr-gaming-oc-28nm-pcie-30-%28x16%29-6008mhz-gddr5-gpu-1085mhz-boost-1150mhz-core

Thanks for the suggestion, it might be just a little too out of my price range i'm afraid. thanks for the suggestion though

 

[sosofm]

You can buy XFX AMD Radeon HD 7870 Double Dissipation http://www.scan.co.uk/products/2gb-xfx-radeon-hd-7870-double-dissipation-edition-28nm-4800mhz-gddr5-gpu-1000mhz-1280-cores-2x-dvi-h £137.74 Inc VAT and you have two free games bonus.

 

[liamr]

You can buy XFX AMD Radeon HD 7870 Double Dissipation http://www.scan.co.uk/products/2gb-xfx-radeon-hd-7870-double-dissipation-edition-28nm-4800mhz-gddr5-gpu-1000mhz-1280-cores-2x-dvi-h £137.74 Inc VAT and you have two free games bonus.

Thanks, i'm definately looking at that now, i'm still taking answers until christmas day which is when i am ordering my card. btw would my cpu be bottlenecked by this upgrade?

 

[sosofm]

No.