Used GTX 680 OC vs New GTX 760 OC (On a budget)

[TheMagicalManiac]

Hey guys just wondering,
making a budget PC soon and I am trying to get something around $300 with the best performance I can get. I can get a various used GTX 680 OC for about $300 from shopping around ebay and/or gumtree (while getting either something like an Evga or something with a decent non-referance cooler like the Asus DC2) or I could get for about $315 a brand-new GTX 760 with more warranty and support and the alike.

My main point is that what difference in performance is the 680 to the 760? Is it worth the sacrifice to get a used card for extra performance? I have heard that the 670 and the 760 are basically the same and that the 670 to the 680 is only a 5% difference.

Two more things,
does over clocking void your warranty on your card and if I get a card what cooler is the best out of these three:
http://msy.com.au/product.jsp?productId=11229 (MSI Twin Frozr)
http://msy.com.au/product.jsp?productId=11166 (ASUS DC2)
http://msy.com.au/product.jsp?productId=11169 (Gigabyte Windforce)

-Thanks guys, appreciate it in advance.

 

[clutchc]

The stock GTX 680 is generally faster at gaming than the GTX 760: http://www.anandtech.com/bench/product/772?vs=854
The O/C version would up that by a bit. But buying used is always dicey. I buy a lot from ebay and have about a 90% success rate so far.
Don't buy from someone that doesn't offer returns. And look for someone who has a good feedback (95% or better) on several sales.

I don't O/C my cards, so I can't answer that part. As far as which of the cards in list of 760s, I like Twin Frozrs (see my sig). I started out with a GTX 560 OC Twin Frozr and the 2 x 660s I have are just as nice. Big coolers w/big heat pipes and a great fan design.

Btw, If you get the used GTX680, the first thing I'd do is remove the cooler and replace the thermal paste. After about a year of gaming, it gets dried out and looses its thermal conductivity.