Today we're going to look at the effects of Resizable BAR, but with a twist. For those that don't know, Resizable BAR is a feature that has recently been activated on Nvidia 3000 series and AMD 6000 series GPUs. It allows your CPU to access more than just 256MB of memory at a time. As we now have GPUs in the consumer space with 24GB of memory, this can be a good benefit.
Just a heads up but you may hear AMD call this Smart Access Memory. It is Resizable BAR though.
There are four catches...