With the 770's if you want to oc the card alot dont go with the EVGa's unless you get the classified version. all but the classified use the reference PCB and VRMs which will limit overclocking. You would need get a non reference board with better VRMs like the gigabyte windforce or the MSI lighting or twin frozr. My Gigabyte 770's oc well I have hit 1333Mhz on the core and 7630Mhz on the memory and have thermal headroom to push more but I dont even need what i have till i get all 3 monitors going in a few months. Here is a review where they pushed the windforce even higher. http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/62065-gigabyte-gtx-770-windforce-3x-oc-review-8.html
And a GTX 780 set the world record...
How well does the gtx 700 series overclock? Are there problems overclocking? A friend told me that the 700 series has lots of overclocking problems.
Based on my experience, not by much. Even if you add voltage to it, it's still not fully stable. Maybe I just got a not-soo-good overclocker card or prolly because my card has already got it's full potential as I bought a pair of Superclocked versions of 770 from EVGA. I say, if you want to get a 700 Series card, Just get the pre-overclocked version.
With the 770's if you want to oc the card alot dont go with the EVGa's unless you get the classified version. all but the classified use the reference PCB and VRMs which will limit overclocking. You would need get a non reference board with better VRMs like the gigabyte windforce or the MSI lighting or twin frozr. My Gigabyte 770's oc well I have hit 1333Mhz on the core and 7630Mhz on the memory and have thermal headroom to push more but I dont even need what i have till i get all 3 monitors going in a few months. Here is a review where they pushed the windforce even higher. http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/62065-gigabyte-gtx-770-windforce-3x-oc-review-8.html
And a GTX 780 set the world record. http://www.tomshardware.com/news/GTX-780-Overclock-3DMark-LN2-Record,23231.html
Keep in mind what the 7 series is. They are the same chips as found in the 6 series, just with more voltage and higher clocks. (except for the GTX780.) If you think of it like that, it's already an OC'd card. I wouldn't expect great OCing results from the 7 series.