Originally Posted by NinjaSushi2
Why would you need a fan on the heat sink already in the gpu? Once you add a second gpu you won't have room to actually use that fan efficiently. The heat would blow on to the PCB of the next gpu. Why would you add a fan onto a heat sink with a fan?
Ok, let's step through this very carefully.
From the second post:
Then go to post 1255 in this thread. Someone is trying to fit a dwood bracket + VRM fan on a GTX 670 (680 PCB) in a BitFenix Prodigy, which is a Micro-ITX case with two expansion slots pretty close to the side panel (post 1262) - although the side panel is ventilated. They want to be able to close said case. Thus they have 2, and exactly 2 slots to work with, and no worry about anything else being pushed up against the card. They also won't have the original heatsink on the card (as a good % of the point of this thread is replacing the GPU heatsink/fan with a sealed watercooling unit, which leaves you to worry about the VRMs, which is what the Scythe fan is suggested for).
So dwood suggests the slim Scythe fan in post 1265. This is the one you started poo-pooing (post 1276), presumably without reading any of the comments leading up to the suggestion of it.
So, for summary:
2 slots total
slim fan, of which the Scythe is a good choice (perhaps the only choice in slim ones, at least in larger sizes, although I know of a 20mm Yate Loon 120mm one too).
Sorry for the thread hijack. The Scythe fan is a good choice for this application, as it would likely keep the card to only 2 slots in size, and thus let a dwood-bracket-modded card fit in the Bitfenix Prodigy while still having active VRM cooling from a fan.