What is the optimum image buffer setting?
The optimum image buffer setting for 2GB of RAM and a 2Kx1152 resolution is 192 buffers. Typically we have found that if you are using a shared memory architecture (such as with the GMA950 from Intel), that 192 buffers works better due to certain amounts of memory overhead that the shared architecture creates, where-as up to 220 buffers works well if a dedicated GPU is being used. Also take into account that there are other internal buffering systems and additional memory required for background and OS operations to take place apart from the image buffer. So the architecture of SiliconDVR and Windows XP does not allow 100% of the memory in a system to be allocated to image buffers. At our largest frame size of 2048×1152, each buffer is equal to 4,718,592 bytes or 4.6MB.
