| ▲ | userbinator 4 hours ago |
| Thunderbolt is basically external PCIe, so this is not so surprising. High speed NICs do consume a relatively large amount of power. I have a feeling I've seen that logo on the board before. |
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| ▲ | kohlschuetter 4 hours ago | parent | next [-] |
| I don't know how to measure the direct power impact on a MacBook Pro (since it's got a battery), but the typical power consumption of these cards is 9 W, not much more than Aquantia 10 GBit cards. Also, if you remember where you saw that logo, please let me know! |
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| ▲ | usagisushi an hour ago | parent | next [-] | | JFYI, for measuring power draw, you might be able to use `macmon`[0] to see the total system power consumption. The values reported by the internal current sensor seem to be quite accurate. [0] https://github.com/vladkens/macmon | | |
| ▲ | usagisushi 40 minutes ago | parent | next [-] | | Speaking of hardware, the RTL8159 (10Gbps) hit the market late last year and is said to consume only about 2–3W. It apparently runs very cool compared to older chips. (Though it would need to be bonded to reach 25Gbps ;-) | |
| ▲ | kohlschuetter 28 minutes ago | parent | prev [-] | | Very nice tip, thank you! I measure around +11W idle. While running a speed test, I read ca. +15W. |
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| ▲ | consp 3 hours ago | parent | prev [-] | | Plus 1-2.5w per active cable. You need the heatsinks as the cx4 cards expect active airflow, and active transceivers as well. I have a 10gbit dual port card in a Lenovo mini pc. There is no normal way to get any heat out of there so I put a 12v small radial fan in there as support. It works great at 5v: silent and cool. It is a fan though so might not suit your purpose. | | |
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| ▲ | xattt 4 hours ago | parent | prev [-] |
| The PCI-E logo or the “octopus in a chip” logo? I’m more interested in the latter. |
