The output of BufferBandwidth on FirePro-8750 is:
Selected Platform Vendor : Advanced Micro Devices, Inc.
Device 0 : ATI RV770
Expected Error: Device does not support cl_khr_local_int32_base_atomics extension!
I am doubtful that the device does not support Atomic operations. It appears to me some software issues.
Tried finding in Specs, but could not find the details.
Thanks and regards,
"I am doubtful that the device does not support Atomic operations."
You can check this by using the command "clinfo".
At the end of the output, it lists all the extension your GPU supports.