I may have some of these too, I will get back with you on it.
I have multiple 1060's
I know off the top of my head the following
MSI GeForce GTX 1060 DirectX 12 GeForce GTX 1060 GAMING 6G 6GB
Gigabyte 1060 6GB (Not sure what sub model but know it is Gigabyte)
1 Asus ROG Strix 1060 6GB
We are downsizing some of our operations and have the following ready to sell, I will get the question out of the way. Yes, the cards were mined on. They were kept in A/C controlled environment, Undervolted and kept at a temp of 70C or less.
If you are interested in turn-key mining rig we do...
I just got 1Gb/s synchronous and had to upgrade mine to a mini-itx build with pfsense in order to handle it through an openvpn tunnel, which I may switch to IPsec for better throughput.
If you are looking for speeds above 500Mb/s you will need something similar, as most encryption is single...
From the sources I have heard it is a good fit for a 1Gbps as it does have two 1Gb Intel NICS for WAN/LAN. This can also change if you run other applications on top such as snort/Suricata.
As for VPN it will greatly vary depending on your VPN connection with OpenVPN it will peg the CPU around...