For those of you running liquid cooled 680, was it worth it in terms of overclocking? We know the temperature benefits brought by liquid cooling, that doesn't automatically guarantee increased overclock over air though. The Zotac 680 I have will OC to 1285 core and 500mhz on vram on air. I generally detest air cooling so in general I would buy a waterblock when one is available. 680 has no problem in that area. EK have the blocks. I could quite happily run my zotac on air without overclock. BF3 on ultra at 1080 seems to run fine. What I need to do is measure the performance increase in game between default 680 speed versus the 1285 + 500mhz I can get overclocked. If the difference is small, why bother OCing? I realise GPU OCing is generally limited compared to CPU but I am evaluating the situation. I would probably get a full cover block purely because I like having low temps but I am interested to hear your experiences and gains running liquid cooled 680?