GPU Memory Write Rate (Bytes per Second)

This counter shows the rate within the current period that the GPU is writing data to the system memory bus in bytes/sec.

A constantly high value means the GPU may be accessing memory too often. On shared memory systems it is possible that this value may be a consistently low, but the system is still memory bandwidth limited.

Memory write should be rarely a bottleneck. In the case that this counter is very high, try to reduce writing operations, for example reducing off-screen frame buffers, etc.