Process Explorer : Wrong amount of video memory

I have a FirePro W9100 with 16GB of memory.

But Process Explorer say I have almost 4GB

I think you use a undocumented windows api which return a 32bit integer for the amount of memory (I use it too).

I found a simple way here http://software.intel.com/en-us/forums/topic/303538 

Get the amount of memory in windows register.

I retrieve my 16GB with qwMemorySize line. 

But this is a work around for the limit size, for current usage the value is still wrong if I use more than 4GB.

I like a lot Process Explorer but I can't use it for debugging video memory usage. I have to use tools like GPU Caps which use OpenGL proprietary extension NVX_gpu_memory_info and ATI_mem_info.

I hope you will find a way to fix this "bug", you are doing great job