Hardware We Recommend for Quad-GPU in Octane and Redshift
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.
Quad-GPU Octane/Redshift Workstation Overview
Processor (CPU): Intel i9-9900K
We chose the 9900K for its heavy amount of single-core performance that is necessary to properly feed the quad video cards.
CPU Cooler: Corsair H100i PRO
To ensure that the i9-9900K remains cool under load, we've selected a very good aftermarket water cooler. While air cooling is more reliable, the amount of heat being dissipated into the case with 4 GPUs warrants a higher-end cooling solution. We’ve conducted heavy testing, and only use water coolers that rarely fail.
Motherboard: Asus WS Z390 PRO
Because this Quad-GPU Octane/Redshift Workstation requires a high degree of reliability, we chose a high quality motherboard from Asus. This motherboard has excellent power delivery, a simple visual design, 4 PCI 3.0 slots, support for multiple M2 NVME drives, and up to 128GB of memory.
Memory (RAM): Corsair Vengeance LPX 4x16GB DDR4-2666
We went with 64GB 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. As Coffee Lake Refresh is a dual-channel platform based on DDR4-2666, the system is most stable by using 2 DIMMs at 2666 frequency.
Storage (Hard Drives): HP EX920 1TB NVME, WD Red 4TB
The main NVME SSD and archival HDD were chosen for their high capacity, relatively low cost, and high reliability.
Video Card (GPU): 4x EVGA RTX 2080Ti 11GB XC Hybrid
The video cards were chosen for their memory capacity, CUDA cores, RT cores, and Tensor cores. These video cards use a hybrid liquid cooling solution that removes heat from the GPU core very quickly, preventing the GPUs from overheating, and keeping noise down. To ensure the hybrid cooler has enough air, we've incorporated 4 new high-pressure fans to blow directly onto the radiators.
Case: Corsair 750D Full Tower
The case was chosen for its high build quality, room for several high-end video cards, and incredible amount of cooling potential.
Fans: 7x Noctua NF-F12 PWM Black
We have selected a full set of high-quality pressure-optimized fans to ensure sufficient airflow in the case to keep the system stable under heavy load.
Power Supply: EVGA SuperNOVA T2 1600
The power supply was chosen for its high build quality, large 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.