It's an: HP t730 Thin Client From dmesg: cpu0: AMD RX-427BB with AMD Radeon(tm) R7 Graphics, 2697.05 MHz, 15-30-01
4-cores total
I haven't tested it on a 1Gb/s but @c17r said it works: https://news.ycombinator.com/item?id=25045963
I have an older alix one, and I think it worked with 100Mb/s, but struggled after that.
Now, I bought my apu in 2016 and I don't regret it, but I'm not sure I'd buy one in 2022.
For reference, quick iperf3 TCP tests on my APU2 (cpu[0123]: AMD GX-412TC SOC, 998.27 MHz; em[0123] at pci[1234] dev 0 function 0 "Intel I211" rev 0x03):
LAN host <-> APU: ~410 Mbps
LAN host <-> APU (over WireGuard): ~140 Mbps
However, I've put em[123] together as a veb(4) switch without pf involvement and two LAN hosts will get almost the full gigabit between them over that. Would need something bigger if I had a faster uplink or more complex LAN requirements.
Keep you eyes open for sales. /r/homelabsales/ has great deals on these SFF devices sometimes.
I've read that the PCEngines struggles to keep up with network traffic in excess of 100Mb/s.
Although this update may have addressed that. That router guide is ok. but the official pages are better. https://www.openbsd.org/faq/pf/example1.html
Hit me up directly if you have any questions. o2kewl[at]gmail[dot]com