/dev/null
[H]F Junkie
- Joined
- Mar 31, 2001
- Messages
- 15,182
My performance in win10 was horrible with autodetected microsoft drivers. Better when downloading from Mellanox...ConnectX-2 are able to do 9.5gbps with the iperf test. They work out of the box in Windows Server 2016 and Win10 as well.
Also as arnemetis said, they are most likely to be put in 2.0 slot that is fed by the chipset and most low to mid range chipsets at least in AM4 are 2.0. We'd like to use all the CPU 3.0 lanes for the graphics card . My cards are also in 2.0 slots. Their (slots') theoretical limit is 16gbps for x4 anyway I think.
Of course if anyone finds similarly priced ConnectX-3 cards, they should get that.
At least my connectX-2 cards have some little bugs. If one machine is rebooted sometimes the connection is not recovered after the machine boots. It seems some bug in the firmware. In one end the connection says "cable unplugged". A simple scheduled script checks the condition of the other machine and the state of the connection and disables/enables the connection which resolves the issue.