Overview Built this rig to replace my old build from 2012. The goal was to build a computer around two 1080ti graphics cards. Mainly used for gaming at 1440p@144Hz or in VR.
CPU I chose the Threadripper because the TR4 socket will be supported for a long time, I wanted 16 PCIe lanes for each graphics card, and having lots of threads is good for SLI. SLI can cause CPU bottlenecking which is what causes microstuttering. That and the alternative, the Intel 7000X series, was much more expensive. But Ryzen's single core performance is pretty bad compared to Intel's. My overclocked Threadripper is only marginally faster in single core performance than my old overclocked 3rd gen. i5. So far, I have not observed any microstuttering in the game's I've played, I'm really happy with the Threadripper and X399 chipset so far.
Motherboard At the time of building this, the Asus Prime X399-A is the cheapest X399 board on the market. It has all the features I need on it. Overpaid a little because I bought it bundled with the processor (which I underpaid for) at Microcenter.
Cooling I have a bit of brand loyalty to ARCTIC, they make great coolers and really quiet fans. The 240mm AIO can easily manage an overclocked Threadripper that's consuming more than 200W. I arranged the fans so that the four radiator fans plus one more 120mm fan blows into the case horizontally. I wanted to get as much airflow as possible in-between the the graphics cards. There's one 140mm fan blowing air from the top and one 140mm fan sucking air in the back out of the computer.
RAM The 3200MHz quad-channel memory and the large CPU caches are great for the strategy and simulation games I play. But the single threaded performance leaves a lot to be desired.
Storage I didn't want anything too fancy for storage and I didn't want to spend a lot of money on it, but I also wanted some speed and redundancy. Not a whole lot to say here.
Graphics Card I was pretty lucky when I got these two 1080tis at MSRP + tax. These things are beasts. With Ampere still far off and afraid NVIDIA might raise MSRP on the 1080ti in the future, I decided to build this computer now. They SLI pretty good, because even if it's only a 25% boost in performance, 25% of a 1080ti is as much power as my old HD 7970. Sadly, VR in SLI is not very well supported on the Vive and not supported at all on the Rift. Hopefully that will change with VRWorks.
Case I liked the look and the price of this case and it fit all my cooling needs. But the cable management space is pretty small, the screws don't seem like they were threaded for this case, and the side panel scratches with very little effort. Over all it felt pretty cheap but it looks good and does the job.
Power Supply I picked a big power supply that I could actually get my hands on in this mining climate. Ended up over paying a bit but I didn't see any way around it.
Display I got this Dell monitor refurbished off eBay. Great price for it's capable of. I'm never going back to 60Hz if I can help it.
Overclocking I was only able to overclock the Threadripper to 4.05 GHz before running into stability issues, and that is with upping the voltage to the max of what AMD considers safe. I was able to the overclock the GPU +150 MHz on the core and +725 MHz on the VRAM before running into stability issues.
Future The only upgrade I see myself doing is maybe upgrading the CPU when a Threadripper with significantly better single core performance comes out and liquid cooling the graphics cards.