I hadn't built a machine in about 5 years, or even had a full blown PC for that matter. I primarily play Destiny 2, so when cross-save was announced this summer I knew it was time to dump the PS4 and finally make my way back to PC gaming. I started researching and it turned out that the Zen 2 launch was just a few weeks away on 7/7.
My nearest Microcenter is about 2 hours from my home, so I like many others woke up early and bought my 3700X right on release day, along with the RX 5700. Microcenter happened to have a flawless, "open box" Asus B450-I mobo and some crazy combo discounts running that day, so all in all the CPU, GPU and Mobo only cost $707.94 pre-tax.
Over all the build was challenging but in the best kind of way. Taking your time is key. Some other users on this site had noted that the individually braided PSU cables corsair sells are a must with this case. While I think you could maybe get by with the stock ones, they certainly made everything a lot more pleasant. I think that routing all the cables for the RGB lights and fan cables+splitters took me the most time- there is an adapter cable you need from Phanteks to link it with your mobo. I took a lot of care to make sure the blower card is getting good airflow to keep the GPU nice an cool. I moved the included fan from Phanteks to the very bottom of the case, for a push-pull config on the bottom mounted radiator. Two corsair fans are installed in the front slots, bottom as an intake, top exhaust. Temps are really solid for the size. CPU idles around 35-37 and the GPU at 53. Under synthetic loads the CPU will hit 75 and GPU as high as 90 but generally during gaming things are around 55-60 & 85 respectively.
I obsessively routed every I/O cable down the back of the case instead of using the hole Phanteks provides at the top. This includes: Two DP cables (one not in use... just in case...), an HDMI cable, an Ethernet cable, 4 USB 3.0 extension cable to allow for plugging in the KB, and the monitor based USB hub without having to be so close to the machine. Then I wrapped everything in wiring loom to keep the underside of the desk nice and clean.
This has been a ton of fun and plays D2 at 1440p just as well as I hoped. I've even started to try and do a little bit of twitch streaming on here while playing and after some fiddling it seems to be working okay through Relive... though I'd be lying if I didn't say my main drive for playing around with streaming & recording is so I can make an excuse to build a second rig ;) I have a plan in mind already... and it's only $830...