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I deleted the post, thanks for clarification

Oh did they change the raise between the generations?

Did you just replace the thermal paste between die and heat spreader? And what did you use? Liquid Metal?

because I don’t need to use the SFP+ modules anymore. They each consume about 4W. The switch also runs way cooler now, this modules are getting really hot.

I'm back with results: X550 X710 Idle 10 -11 Watts 8 -9 Watts Load (iperf3 --bidir -t 0) 68 Watts 57 Watts Switch 16 W continuously 8 W continuously I setup two VMs, passed through one nic to each and ran iperf3. So my savings in total (Switch + M720q) are 10 Watts at idle and 18...

I am running linux as well I think it was this: https://www.lenovo.com/us/en/software/think-bios-config-tool/ But only the cli client edit: this might be what you are looking for: https://download.lenovo.com/pccbbs/mobiles_pdf/lenovo_bios_setup_linux_wmi_sysfs_1.2.pdf

I think there is a cli flash utility in the windows download that had the ability to import/export settings. But I never tried it.

Roughly 6 Years when I calculate with 40 ct/kwh, but we are no back at 25 ct/kwh, so it would be more like 8-10 Years :D

I thought of it first but then I found a X710 for 90€ incl. shipping and free returns from a refurbish saler. I'll directly compare X550 and X710, if I achieve significant power savings I'll keep the X710, otherwise I'll send it back. I'll post the results next week.

Sorry I forgot to mention that I would like to keep ASPM support, that is the only reason I haven't picked the X520.

I went with a similar solution for the X550, But I'm using USB to power the fan (The Fan is mounted with a little PCB standoff): The USB connecter barely fits through the hole next to the ethernet port.

Hey, I'm currently building a Lenovo M720q based Proxmox server and decided to go with 10 GBit/s Ethernet. My switch is a Zyxel XMG1915-10EP with two SFP+ Ports. Currently I'm running a Intel X550-T2 with two HiFiber SFP+10GBASE-T modules, I went with the X550 series because a I got the card...

Where did you get the small blower fan? Is it reasonably quiet? I'm just about to do the same mod on my Intel X550-T2.

Yes, it was the power supply. With the 90W power supply, I can operate the CPU at over 35W. The aluminum cooler handles it quite well up to 55 watts, then all cores reach about 90°C, and the fan becomes quite audible, but far from full speed. However, my idle power consumption with the 90 Watt...

Thanks, that was it! With some caveats... I wrote it all together in a Gist: https://gist.github.com/mietzen/1569ed77c2820e7b7b8845375f6f7ed2 To summarize: Deactivate secure boot Be sure that secure boot is real off! Set the power limit to exactly 35W one even one Watt more! I also got the...

Thanks I already tested GitHub - erpalma/throttled: Workaround for Intel throttling issues in Linux., next I'll try older BIOS versions.

The CPU throttles to 7 Watt / 800MHz under load without any reason, that might be efficient but also very very slow.

Hi, I bought an M720q with a Pentium Gold and upgraded it with a Core i7 8700 (65W). Everything runs smoothly under Windows the CPU briefly pulls up to 45W and then settles down to 35-37W, with temperatures averaging at 75°C / peaking at 80°C under full load. This is exactly what I expected...