Designing the right system for the current scenario is a core element of our mantra at Top Flight Computers. If you don't get the right parts, it doesn't matter how much you spend on your computer...you'll be stuck with expensive hardware that doesn't work well with your situation.
4K Gaming PC Overview
Processor (CPU): Intel Core i7-9700K
We chose the i7-9700K for its overall performance in games, and near-best single-core performance (beaten only by the i9-9900K). In 4K resolution, a large chunk of the processing weight shifts to the GPU, and the i7-9700K provides enough horsepower to power through most games, and properly feed data to the video card. This provides a very stable platform for a multi-year gaming system.
CPU Cooler: Corsair H100i PRO Liquid Cooler
Due to the i7-9700K tending to run hot, we've selected a very good aftermarket closed-loop liquid cooler. Water has a higher specific heat than air does, and thus cools much better. It can hold more heat energy per volume, thus moving more heat away from the source. Using water cooling allows you to push your CPU harder, while maintaining the same thermals, or run the CPU at the same settings, with lower noise (and still good thermals). The higher-end liquid coolers such as the one selected above come with very long manufacturer warranties (upwards of 7 years), so the failure rate is extremely low.
Motherboard: MSI MPG Z390 GAMING PRO CARBON
We chose a high-quality Z390 series motherboard for robust performance and long-term reliability. MSI is a very good manufacturer of motherboards, and while this motherboard is a little expensive, it provides an extremely robust long-term platform for the i7-9700K. While we don’t have multiple video cards, this Z390 model does support multiple video cards via SLI and CrossFire. This motherboard has excellent power delivery, a simple visual design, three PCI 3.0 slots, support for multiple M2 NVME drives, and up to 64GB of memory.
Memory (RAM): Corsair Vengeance LPX 2x8GB DDR4-2666
We went with 16GB of Vengeance LPX memory due to the extremely high quality of the internal chips. This setup will give the user plenty of room for open applications.
Storage (Hard Drives): HP EX920 1TB NVME SSD
The NVME SSD was chosen for its high capacity, relatively low cost, and high reliability.
Video Card (GPU): EVGA RTX 2080 8GB XC ULTRA GAMING
The video card was chosen for its large memory capacity, ample CUDA cores, RT cores, Tensor cores and support for 4K resolution. This video card has a very capable aftermarket cooling solution, and will prevent any sort of thermal throttling from taking place.
Case: Phanteks Enthoo Pro M Tempered Glass (Black/White)
The case was chosen for its high build quality, room for plenty of high-end hardware, and incredible amount of cooling potential.
Fans: 3x Phanteks PH-F120MP
We have selected a set of high-quality pressure-optimized fans to ensure sufficient airflow in the case to keep the system stable under heavy load. Having high quality fans also means less noise, even when the fans are spinning at high RPM.
Power Supply: SeaSonic FOCUS Gold 750W
The power supply was chosen for its high build quality, ample power capacity, and respectable thermal efficiency. Upgrading the wattage will potentially make the fan run slower, creating less noise overall. A higher wattage PSU than necessary will also prolong the life of the unit, as it isn't being operated near peak load. Using a high quality power supply means better power delivery, and cleaner power. Messy power can result in a system failure, corruption of data, or even a hardware crash.