I can confirm that.
Adapter Power Consumption:
Power Reduction Disabled: 15,5 W - 16,0 W
Power Reduction Enabled: 12,9 W - 13,4 W
The onboard nic is comparable to the Broadcom NetXtreme E-Series P210TP 10G LAN-Adapter BCM957416A4160C...
On the Epyc platform there are a lot of options to optimize the system performance.
The reason may be that the CPU is trying save energy too aggressively. On Windows by default the Collaborative Processor Performance Control CPPC is not enabled...
Just wanted to say thanks for this tipp to the one who found this out originally and all others who spread this. Thank you very much! Great work.
With this I was able to successfully flash a HPE DL38X Gen10 12Gb SAS Expander.
HBA used is an SAS9211-8i and Ubuntu 18.04. lsscsi and sg3-utils...
I have bought the IBM ServeRAID SAS Expander Adapter 46M0997 for 16€ from a Chinese shop. Very cheap now.
Motherboard: Asus P9D-E4L
HDD: 8 x HGST Deskstar NAS 4TB, SATA 6Gb/s (Kit Model H3IKNAS40003272S, Drive Model: HDN724040AL)
Controller A: Fujitsu D2616, SAS2108 (similar to LSI MegaRAID...
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