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userbinator 6 hours ago

Low-cost devices are exactly where 10/100 is still widely used. On PCs, it's a common power-saving mode.

lostlogin 5 hours ago | parent | next [-]

TVs too.

	▲	geerlingguy 17 minutes ago \| parent [-]
		And PoE security cams.

hsbauauvhabzb 4 hours ago | parent | prev [-]

For those of us who don’t know, how does it save power vs a 1gbe running at low throughput?

	▲	jech 2 hours ago \| parent \| next [-]
		> how does [100BASE-TX] save power vs [1000BASE-T] running at low throughput? 100BASE-TX uses just two pairs (lanes), one for sending and one for receiving. 1000BASE-T uses all four pairs, for both sending and receiving. Therefore, a 100BASE-TX interface that's only receiving needs to power up one pair. A 1000BASE-T interface needs to power all four pairs all the time. I recall reading about some extensions that allow switching off some of the pairs some of the time ("Green Ethernet"), but I think that they require support on both sides of the link, and I'm not sure if they are widely deployed.
	▲	adastra22 4 hours ago \| parent \| prev [-]
		I assume it is for wake-on-LAN. This of course requires the NIC being powered on while the system is sleeping. Lower bandwidth mode = less power draw.