My current cost meter shows at 7 connected network devices to a consumption of 2 W, so that the switch consumes a lot less power than at my age. To measure the velocity with respect to file transfers, I transferred a 711 562 kbyte large file from one computer to another, the transfer took 81 seconds and a transfer rate of 68.63 Mbit / s revealed. Thus, the transfer rate is 68.68% of the theoretical potential value, which is not so bad. The test program Iperf gave a value of 93.6 Mbit / s - that is, if the hard drives and the rest of the hardware would be faster in my laptop, then the transfer of the test file would have less time.
Conclusion the transmission speed of the TP-Link TL-SF1008D you require in a home network or small office.
It would have been nice if the switch on the back would have a recess for a wall mounting - the problem I have solved, in which I have myself made of a piece of sheet metal a special bracket with mounting holes into which pushed the switch from above into can be.