Alexander_A

Okay, deepseek 😄 explained to me why OpenCL is slow when measuring memory read speed. But then this benchmark doesn't show the full capabilities of the iGPU.

As i wrote before LM Studio & llama.cpp(vulkan) shows(via hwinfo) full speed of memory read in inference with iGPU only - 64...69 Gb/sec. It can not be so bad that in OpenCL speed is 2 times slower. I will search some another tests to compare.

In GPGPU test Ryzen 8700G shows: Memory Read GPU 38280 Mb/s - CPU 63740 Mb/s Memory Write GPU 36536 Mb/s - CPU 88447 Mb/s Memory Copy GPU 75385 Mb/s - CPU 74036 Mb/s So it can not be true because GPU and CPU have same memory controller. Interesting that hwinfo64 shows same values when GPGPU test running, but in LLM inference with gpu only i see full memory read speed (about 64GB/sec). Same situation on Ryzen 9950X when you testing iGPU.