Intro:
Well, this was a journey. This is my first ever PC build, upgrading from an MSI PE60 6QE laptop (an i7-6700HQ, GTX 960M, 16gb RAM, 1tb SSD etc...). This is primarily a gaming and streaming machine, with video and photo editing on the side, all wrapped around the centre piece: the MSI RTX 2080 Ti Seahawk EK X.

The whole point of this PC was to be an absolutely insane first build, and I think I achieved that.

Part Selection:
So, as for parts selections, sure you could go for a 9900k, and get the 8 extra threads, but with the price of that chip as of when I was buying my components, and the fact that those other threads will basically never get to stretch their legs for my use case, I'm happy with my CPU selection. The 2tb SSD was a bargain on sale, as was the 32gb of RAM, otherwise, probably wouldn't recommend this route for a solely gaming PC.
The case is purely subjective, but I love the look of this particular case. If I was to change anything, I think I would have used a slightly better PSU - but then 80+ Gold at 1000W is fine for me, I suppose. The monitor was one of the most challenging parts to decide on, but in the end, I went for the Dell AW3418DW, because of its outstanding build quality (I can confirm this), amazing looks (this also), and it's incredible 3440x1440 resolution, at 120Hz (overclocked), with a 4ms response time, all with G-Sync. I can't tell you how amazing this thing is, and honestly, for a gamer who values eye-candy over raw frames (unpopular opinion, I know), this is a real treat. It's also the perfect pairing for my 2080 Ti, which can push over the display to its full potential.

Overclocking:
I managed a stable 5.2GHz across the first four cores, with the other four at 5.1. This was achieved at 1.440V, with temperatures staying mid 80s at worst; around 76 average. For 24/7 I am using 5.0 OC at 1.38V. The previous numbers were for testing purposes only, with fans and pump at 100%. As for the GPU, though 2080 Ti's are notoriously sketchy overclockers, I did manage 2160MHz on the core, with a 8000MHz on the memory. That's +165 and +1000 respectively, for my particular card, seating this system comfortably within the top 2% of 3D Mark results.

3D Mark Time Spy - 13,629 Graphics - 15,026 CPU - 8,945

Firestrike - 27,753 Graphics - 35,932 Physics - 20,736 Combined - 12,627

So that's it. All in all, I'm overjoyed with how well this came out. I'm completely in love with my new PC. It's the best gaming experience I've ever had, and I will definitely be building more PCs in the future.