Over the last +20 years, we have worked with a dozen or so generations of computers, workstations and render stations. We will try to suggest what to consider when choosing a computer for 3D graphics. We have used dedicated 3D graphics workstations from companies such as HP and Dell, as well as our own tailored builds. In recent years, we have used both. 

Which software do you use or plan to use?

First, we must specify which software the computer will run. Some 3D applications have particular processor, RAM or graphics card requirements. These should inform later choices. 

A versatile computer for 3D graphics: what features should it have?

Memory, memory, memory

Graphics applications need large amounts of memory and access it frequently. Choose plenty of RAM and graphics memory. When choosing between faster memory and greater capacity, capacity is usually better. Of course, stay reasonable and consider the programs you will use and their potential memory needs. If your scenes allocate up to 64Gb of RAM, do not buy 128Gb; prioritise speed and timings instead. Graphics card memory is equally important. 

Balance

The processor, RAM and graphics card should be matched to use their capabilities fully. Investing in an expensive graphics card makes little sense if the bottleneck is the processor, a poor motherboard or insufficient memory. 

Power supply

This is one of the computer's most important aspects. Stable operation is impossible without stable power. Buy a high-quality power supply from a reputable brand, preferably with capacity above the components' planned consumption. For example, if maximum consumption is estimated at 600W, aim for an 850W supply or larger. Efficiency matters because graphics computers usually operate under heavy loads. A suitable power supply saves frustration and additional costs.

Fast drives 

Current 3D scenes are usually very large, and even automatic compression changes little. Get a project drive, preferably the fastest possible SSD, ideally using PCIe. A separate drive for backups and project archives is worthwhile. 

Quadro or RTX?

It depends. In applications such as 3D Studio Max, RTX cards perform very well in everyday work and rendering. For CAD, consider Quadro. Quadro offers advantages in GPU memory capacity and power consumption, particularly important for rendering. Nvidia Quadro drivers are usually better refined, although not always. Check card and driver compatibility with the current 3D software version.