From reading at this forum and other places of the internet I got the feeling that the idle power consumption of AMD EPYC Milan CPUs must be really bad. I can not remember all pages where I rad that the idle power consumption of Milan CPUs is "so high" but my impression is that hardly anyone is providing some real number but only things like: two time as much as Intel Scalable XY, or worser than the previous AMD EPYC generation Rome.
[https://forums.servethehome.com/index.php?threads/amd-epyc-7003-milan-the-fast-gets-faster.32215/, https://forums.servethehome.com/ind...d-file-server-upgrade-time.32281/#post-298372]
Anandtech did provide some real measuring of the "Package Idle Power" consumption (AMD 3rd Gen EPYC Milan Review: A Peak vs Per Core Performance Balance).
However, they measured the "Package Power"? In another paragraph the stated "We’re using AMD’s energy counters to achieve this, "... but I'm not sure what exactly that means.
For this "Package Power" package power the stated 99 and 103 Watts for the 64 core non "F" SKUs.
In a newer article [AMD EPYC Milan Review Part 2: Testing 8 to 64 Cores in a Production Platform] they state 65 Watt for the 64 core 7763 and 50 Watts for the 24 core 7443. If the "Package Power" also includes the power draw of 8 memory DIMMs the new values sounds a lot more reasonable then the numbers in the first review. For me, the Anandtech articles raises more questions than they answers (in the context of idle power draw).
I want to get an idea about how much power a whole EPYC Milan single socket system draws from the wall. Therefore, I did my own measurements with the following minimal configurations.
Since I often benefit from the knowledge others contribute to this forum I want to give something back and I hope it is useful for someone else. I would greatly appreciated more test result on other, different configurations. Also any thoughts about the AMD EPYC power consumptions would be highly welcome.
[https://forums.servethehome.com/index.php?threads/amd-epyc-7003-milan-the-fast-gets-faster.32215/, https://forums.servethehome.com/ind...d-file-server-upgrade-time.32281/#post-298372]
Anandtech did provide some real measuring of the "Package Idle Power" consumption (AMD 3rd Gen EPYC Milan Review: A Peak vs Per Core Performance Balance).
However, they measured the "Package Power"? In another paragraph the stated "We’re using AMD’s energy counters to achieve this, "... but I'm not sure what exactly that means.
For this "Package Power" package power the stated 99 and 103 Watts for the 64 core non "F" SKUs.
In a newer article [AMD EPYC Milan Review Part 2: Testing 8 to 64 Cores in a Production Platform] they state 65 Watt for the 64 core 7763 and 50 Watts for the 24 core 7443. If the "Package Power" also includes the power draw of 8 memory DIMMs the new values sounds a lot more reasonable then the numbers in the first review. For me, the Anandtech articles raises more questions than they answers (in the context of idle power draw).
I want to get an idea about how much power a whole EPYC Milan single socket system draws from the wall. Therefore, I did my own measurements with the following minimal configurations.
- Mainboard: Supermicro H12SSL-C - BMC Firmware Version 01.00.34; BIOS Firmware Version: 2.1; The onboard SAS3 HBA was disable by a jumper;
- CPU: AMD EPYC 7443P 24-Core
- Memory: Only one 32GB RDIMM ECC 3200MT was installed.
- PSU: 2U Redundant 800 Watts (ASPOWER R2A-DV0800-N) - labeled with 94% efficiency
- Boot drive: M.2 240GB Kingston DC1000B
- All fans was set to 0x32 duty (50.0%) fixed. (1 x 60mm for the CPU at 5880rpm, and 3 x 120mm midspan fans at 1260rpm)
- The SFP+ NICs did not have a transceiver / SFP Module installed.
Component Info | C-State | one PSU | PSU-1 | PSU-2 |
Shut down IPMI only | - | 10.1W | 7.8W | 6.0W |
boot ssd only | Disabled | 77.0W | 46.9W | 43.7W |
boot ssd only | Enabled | 55.1W | 36.6W | 32.6W |
boot ssd + U.2 2.0TB Intel P4510 | Disabled | 81.9W | 48.7W | 45.2W |
boot ssd + U.2 2.0TB Intel P4510 | Enabled | 59.4W | 39.3W | 34.6W |
boot ssd + 2x Solarflare S7120 (2xSFP+) NIC | Disabled | 91.9W | 52.3W | 49.8W |
boot ssd + 2x Solarflare S7120 (2xSFP+) NIC | Enabled | 69.5W | 44.5W | 41.0W |
boot ssd + 2x Solarflare S7120 (2xSFP+) NIC + U.2 2.0TB Intel P4510 | Disabled | 96.7W | 55.5W | 51.0W |
boot ssd + 2x Solarflare S7120 (2xSFP+) NIC + U.2 2.0TB Intel P4510 | Enabled | 75.6W | 46.4W | 43.4W |
Since I often benefit from the knowledge others contribute to this forum I want to give something back and I hope it is useful for someone else. I would greatly appreciated more test result on other, different configurations. Also any thoughts about the AMD EPYC power consumptions would be highly welcome.