Any current nVidia or ATI card with a current video driver should work fine. Where we are seeing the most issues is with people using five year old computers and wondering why their GPU accelerated software is not working. Either their card is not compatible or their driver is wildly out of date.
Another instance is when people are using a totally incompatible card. For example, our GPU accelerated effects do not support the Intel HD Graphics cards at this time. While this may change in the future, this is the case today.
Edward Troxel