I revisited Geekzone yesterday to ask this question, but got involved in some other interesting threads, so to get myself back on focus...
After spending more time than ever before looking into a new build, and changing direction several times, I'm 'almost' ready to go with an i9-7900X build in a Cosmos II case. The only thing still worrying me is just how difficult is it to keep the CPU temperature under control with this chip?
The prospective full build spec is:
ASRock Fatal1ty X299 Professional Gaming i9 — it has an excellent VRM, and a full 10 SATA ports, and lots of USB3 headers (I use a lot of USB3 external drives for back up.
64Gb G-Skill Trident Z 3600 CL17 (4 x 16Gb).
Cooler Master Cosmos II — huge and heavy, but lots of room inside, lots of drive bays, and good air flow.
GTX970 — bumped from my existing 3930K box. This is to keep the cost down. I'll see if anything comes of Volta next year, and maybe look at a GTX1080 if it doesn't.
Cooler Master 1000W Gold Silent Pro — I'll never use more than one GPU, but I have a lot of drives. The 1200W is another $90, and I am torn even if I honestly don't think I'd ever need 1200W
Corsair H115i — 280mm 2 x 140 fans. The block has a USB connection that ties with an app that gives feedback and control. I am not totally sure this will fit in the top of the Cosmos II despite its size, and have a couple of forum posts awaiting feed back on this.
Samsung 960PRO 500Gb — for the boot drive. I _really_ like to keep as much as possible off the boot drive, and rarely go above 180Gb, but Samsung only do a 250Gb version with the EVO. This proved to helpful when Windows died and needed a full reinstall a few weeks ago. All data files, including the Outlook pst file, where there on my second 840PRO 250Gb drive. The Motherboard has three M.2 sockets, so I'll fit a second 960PRO 500Gb drive, and leave the other M.2 socket until I have worked out how best to use it.
So my main question is, has anyone built with 7900X, and if so how are they cooling it, and what temperatures are they managing to keep it down to?