Want to upgrade graphics card, no idea to what!

[obobski]

Yes, everything does draw power, but no graphics card will actually use 600W. What you're probably seeing is the suggested PSU capacity for the entire machine, which includes that "extra" based on some generic assumptions about your computer (which probably works out for your system, based on the specifications you provided). The GTX 770's actual power draw will be around 200W at max, and in normal usage it will be lower than that (it has power management features that will try to minimize its power consumption).

 

A 600W PSU would be fine with your configuration; "at least 750W" is decidedly overkill.

 

As far as the different types of cards - there's various brands, like PNY, EVGA, and Asus (all three are good; EVGA is usually the crowd favorite), and then different makers will have different features like offering the card overclocked from the factory, with upgraded cooling, etc.

 

Price-wise, $550 is ridiculous. $250-$300 is not unreasonable though.

 

If you want a bone-stock card, it won't get any more standard than this:

http://www.bestbuy.com/site/nvidia-geforce-gtx-770-2gb-gddr5-pci-express-3-0-graphics-card-black-silver/1826004.p?id=1219065626957&skuId=1826004

 

Looking at prices for 770s, it may be a good idea to strongly consider the GTX 960 instead - you can get one for probably $100 less, and the performance difference will not be that dramatic (if at all), and the 960 will use less power to boot. Here's a review, comparing them, and a lot of other cards, in Bioshock Infinite:

http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_960_SLI/8.html

 

"960 SLI" means two cards operating together (and your system may not support this), so that can be ignored. For whatever reason it appears TPU has removed Skyrim from their benchmarks (they used to include it), but it will run equally well on GTX 960 or 770.

[Doryani]

If your PSU is good enough I would suggest you to get a GTX 960, you won't have to upgrade your PSU that way and save some money yourself.

But before committing that route you should check your PSU specs, if it's truely 460W(12x36 at least) you should have no problem. Check the 12V channel to see how many Amp you got.