@Unaccounted4 Yeah, right now with the side panel (which has *no* holes), the 4790k gets to about 90c - but it still does not throttle.
*without* the side panel, it runs at 70c on this setup. So I'm going to buy a 3D printer and design a custom side panel, that has ventilation holes over the graphics card area and CPU cooling area, so that it can run closer to 70c.
It's a labour of love. I'm already proud of it; it's literally finished except for that side panel. I'll be buy a 3D printer soon.
@libreleah I had a similar issue a few years back for my custom SteamBox 360 build. With a decided lack of access to 3D printing I just cut a hole in the side panel and put a custom fan grill on it.
(Yes, the internal dc-dc power supply converter thing is still held on with a zip tie to this day.)