[tp69]

The design of the DB4 is such that the graphics card is mounted vertically. Fresh, cool air flows in through the grille at the bottom, over the VRM area, then up and out the top of the case.

I have more small heat sinks I could put on the mosfets, but they are relatively low profile so I'm not sure they would improve things much.

A single, large heat sink, with long fins (that would protrude above and beyond the nearby capacitors) would seem to make more sense — but given there are no mounting points I could use to clamp it down I'd be a bit concerned about the long-term effect of torque.

Opinions and suggestions are welcome.