Building a VR Set Up

In order to run Gravity Sketch in VR, you need to have a compatible PC which meets the required hardware specification. We understand how difficult it can become to choose or build a PC which can run VR. That’s why we have created this short guide on what type of components you need and how important they are.

When building a virtual reality suitable PC, there are two factors which have to be considered - the CPU (central processing unit, or also known as processor) and GPU (graphics processing unit, which is the main chip on a video card). Generally this is comparable to how traditional computer games oper te but with a heavier emphasis on graphical capability along with an increased amount of user inputs which have to be tracked.

What makes VR especially demanding is that the display for each eye has to be rendered separately since they originate from slightly different positions. That is required to give the 3D perception effect that is integral to the VR experience. Each eye's display is also fairly high resolution, and needs to refresh quickly for a fluid feeling when moving.

Processor (CPU)

VR Applications run similar to computer games. Frequency (clock speed) tends to be more important than having multiple cores, that impacts how many calculations each core can handle per second. Therefore, dedicated virtual reality systems are usually best off with a low core count CPU at the highest possible clock speed.

Systems built for developing VR content on the other hand can generally benefit from additional CPU cores depending on what software packages are being utilized, although many 3D manipulation and rendering applications scale easily with multiple cores.

Features such as Stereoscopic video editing require a significant horsepower as well. Many developers and artists will run multiple applications simultaneously, and may require debugging tools or other applications running at the same time as they are testing out their virtual reality software.

Graphics Processing Unit (GPU)

Having a powerful graphics card is significant for VR performance as it directly impacts the capability of the system to maintain performance with the high resolution and frame rate required to provide a good VR experience.

Both Oculus Rift and HTC Vive initial launch versions commanded a dual displays with a resolution of 1080x1200. Each display runs at 90Hz, around 50% higher than the standard monitors refresh rate. Some VR headsets also need off-screen rendering of an area around the actual display that each eye is given, which requires further resources from GPU.

Here is a chart of four common monitor resolutions with the effective resolution of a HTC Vive overlayed for comparison:

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To immerse yourself in the world or VR - GTX 1060 6GB from NVIDIA's GeForce 10 series is definitely a safe bet. If you wish to consider something which will allow you to future proof your setup, then the RTX 2000 Series would be the component to go for. This will improve performance and also adds VirtualLink connectivity.

Memory (RAM)

Memory specification for VR Systems vary due to the units requirements however it has been recommended size would be 16GB and above. This so you can future proof your system as well as consider the use of multiple applications.

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