Originally Posted by moustang
You don't need a waterblock for the G10. It's hybrid cooling. An AIO cooler attached to your GPU. The only thing that's required to use one is for the 4 screw holes around the GPU where the heatsink attaches to line up. You will need heat spreaders or heatsinks on your VRAM and VRM, but your card should already have that. At MOST you may need a copper shim if your heat spreader interferes with the AIO seating properly on the GPU, but other than that it should work fine.
Most GTX 770s throttled at 80C. They'll all run up to 80C and then start backing down the GPU speed to maintain that temp.
I've got a comparison for you here. This is my own system with one G10/X41 installed and the other running on air. This is the highest overclock I could achieve with one card running air cooled.
Air cooled = 1246mhz
And this is with both cards liquid cooled =1303mhz
The initial overclock went from 1246 to 1302mhz on the GPU, but even more important since the cards stayed in the mid 40C range there was never any throttling which resulted in a 7fps increase in average frame rates.
You don't need water to remove the throttling, a simple custom bios does that. I have a custom bios from someone on OCN here on my 770 and I can run it up to (and have before) 95c, and 98c on air and it doesn't throttle and keeps pushing my 1202 Mhz overclock with no issues. It removes nvidia boost and all throttling what so ever. My card never throttles, not due to heat, not due to power, nothing. All of it gone, flat 1202 Mhz always at all times no matter how hot or how much power it uses.
Exactly what I want from a video card. I don't care if I have to push it to 100% fan sometimes, or if it runs in to the 90's C, it won't hurt it. Cards are designed to handle up to 100c - 120c before taking physical damage.
And I can't go in to all that AIO water cooler and mounting crap on the ram and all of that mess because my card's still under warranty until 2018 from EVGA. At most I could do a full waterblock then keep the factory air cooler for later. But nothing that does serious modifications to the hardware that can't be reverted.