It'll be close. You will have to measure from the middle of your processor in all four directions. That distance needs to be less than 2.35." The hitsink directly below your processor looks like the closest obstruction. I can' tell by eyeballing it whether that is less than 2.35"
The 690II is also listed at 8.4" wide. The V6 is tall, but not tall enough to get dangerously close to the side panel. A possible trade-off is that I may only be able to mount 1 fan instead of 2 on my side panel. But looking at the side panel of the DF85, you should still be able to mount a fan on the side.