Here's my results from doing the tests from DAWbench.com:
Setup
OS: Windows 10 (1909) with Ryzen Power Scheme activated
DAW: Cubase Pro 10.5.0 (with ASIO-guard level: Normal if nothing else stated)
Processor: AMD Ryzen 3950x (no OC)
Memory: DDR4 3600 MHz with CL17 (no OC)
Audio interface: RME Digiface
Results
Test 1:
DAWbench-DSP-C7-1566 @ @ 44.1 kHz / 128 samples (all 320 instances of SGA): 74.4% CPU Usage. Screenshot: Test 2:
DAWbench-DSP-C7-1566-EXT @ 44.1 kHz / 128 samples (all 320 instances of reaXcomp): 10.7% CPU Usage.
Test 3:
DAWbench-DSP-C7-1566 @ 44.1 kHz / 32 samples (all 320 instances of SGA): 75.6% CPU Usage.
Test 4: trying to maximize CPU usage
DAWbench-DSP-C7-1566 @ 44.1 kHz / 128 samples (404 instances of SGA): 91% CPU usage.
Test 5: REAPER
DAWbench-DSP-C7-1566 @ @ 44.1 kHz / 128 samples (all 320 instances of SGA): 79.5% CPU Usage. (weird, it's a little more CPU usage than Cubase actually...)
Test 6: trying to maximize CPU usage with SGA set to High Performance Mode (same as Scan Pro Audio did in their other Ryzen 3000 tests)
DAWbench-DSP-C7-1566 @ 44.1 kHz / 128 samples (): Here's comes the "problem" (ie one core is "full" with 7 instances instead of 8 instances = stutter). Gonna test it some more...
Test 7: "Real-world test"
I opened up a project of mine which took about 95% CPU usage on my overclocked Intel i7-4790k Quad Core @ 4.6 GHz, at 256 samples. Result: Same project took only 25% CPU usage on Ryzen 3950x with 128 samples. So that's 4 times as fast in this case and with lower latency.