Alrighty! I know this is a bit of an older thread but it's time to put in my two cents for those asking if there's a water block that fits the GV-N207GAMING OC-8DG. so there is a way to make the recommended Alphacool block for the windforce cards fit.
The card you need is the Alphacool Eisblock GPX Aurora #12984
In order for this to fit correctly on the Gigabyte Gaming OC -8GD card, you need to CAREFULLY remove the plastic clip for the OEM RGB header for the Gigabyte logo on the fan cooler. Use a small wide sharpened screwdriver or something similar in nature to not damage the PCB. Then, you need to desolder the four pins for the "J603" header,
View attachment 2435 as you'll learn that they stick out just a bit too far and conflict with the block. You'll need a hot soldering iron, and a small wire clip or something suitable to grab one of the pins but not wick the heat away too much to allow the solder to melt. Just be sure to NOT BURN THE PCB! Lol
View attachment 2436