GPU Ratings

This is a simplified star rating to indicate the suitability of a particular graphics processors for Virtual Radiography^TM. The table is not exhaustive as it only refers to processors we know to have run virtual radiography, therefore if the processor you are interest in is not listed it does not mean it will not work, but simply that we have not, as yet, tested it. As a general rule, if a processor from a particular series runs virtual radiography, than all the processors from that series will work. The only difference is in the speed of the response.

The scale runs from 0 to 5 stars

0 stars means the process WILL NOT WORK at all. This is usually because its design predates the introduction of features required by virtual radiography^TM

1 star meaning the application will works but the user interface may be sluggish and the image generation times will be greater than more powerful processors.

5 stars means that the performance of the application is not limited by the graphics processor.

For the technically minded, virtual radiography^TM v3 requires a processor that has hardware support for vertex and pixel shader model V2.0 and has support for floating point render buffers. Processors that meet this specification are sometimes referred to as DirectX 9 class processors. The advanced feature currently under development to be released as v4 will require Shader Model v3 support. This is something that you may wish to take in to account if you are upgrading your graphics processor.

A note about video RAM. Virtual Radiography^TM requires a minimum of 128MB video ram. However, more memory will generally improve performance. If purchasing a graphics card we would recommend 256MB or even 512MB if possible.