System Memory Bandwidth Performance
Performance System Memory: Memory Read Test
For our memory tests are split up in copy, write and latency. You'll notice something interesting with the single die 8-core part in write performance. We'll talk about that in a second. You will notice that the Ryzen 3000 processors with up to 8 cores make use of one CPU die. Here the write performance is halved. According to AMD, this is normal behavior. They claim that client workloads do very little pure writing, so the CCD/IOD link is 32B/cycle while reading and 16B/cycle for writing. This allowed AMD to save power and area inside the package to spend on other, more beneficial areas.
Above 3600 MHz DDR4
