N460GTX-SE vs Radeon HD7770 vs GeForce GTX 560 SE

Hello everyone, I would like your opinion on a low-cost(for me it`s not that low) upgrade:
My curent one: http://www.msi.com/product/vga/N460GTX-SE-Cyclone-1GD5-OC-MD.html
The only game I play is Guild Wars 2.
My PC:
PCU:Intel i3 2120 3.30GHz 
MOBO:Intel DZ68DB 
GPU: MSI GeForce GTX 460 SE Cyclone OC 1GB DDR5 256-bit 
RAM: Corsair 8GB DDR3 1333MHz CL9 XMS3 
Storage: SSD Corsair Force Series 3 60GB & WD 500GB SATA-II 7200RPM 
PSU: Antec EarthWatts 500W

possible choices:

MSI Radeon HD7770
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127687
http://www.pcgarage.ro/placi-video/msi/radeon-hd-7770-ghz-edition-1gb-ddr5-128-bit/

or
MSI GeForce GTX 560 SE OC
http://www.pcgarage.ro/placi-video/msi/geforce-gtx-560-se-oc-1gb-ddr5-192-bit/

Questions:
- are my two choices worth the money to upgrade it / performance gain related to price?
- my MB supports PCI Express 2.0 x16. Will this hold back the Radeon 7770 ?
- what`s the better choice when keeping in mind my PC config? (from the signature)
- should I wait for Black Friday, maybe the prices will be better?

Any other advice is very appreciated, thank you.
3 answers Last reply
More about n460gtx radeon hd7770 geforce
  1. I would side with a 7770 my self, it is slightly faster than a normal gtx460/560 256bit 334 shader. Overclocking is usually limited to around 1.1-1.2ghz for most 7770 and power consumption barely goes over 90w max.
  2. would the gain performance from my 460 SE be something I can see? Any place where I could check / compare the FPS maybe?
  3. Yes but not that much considering that you could very easily push that card to 850-950mhz. Just make sure the power vrm is below 100c or it will degrade as it is a common problem with the gtx460 and some 560. Don't bother overclocking the vram as the 460 256bit isn't bandwidth limited.
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