I agree the transceivers and fibre are cheap nowadays, as are SFP+ DAC cables. The expense is the Thunderbolt to Ethernet adapters. You can link two Macs with

I agree the transceivers and fibre are cheap nowadays, as are SFP+ DAC cables. The expense is the Thunderbolt to Ethernet adapters. You can link two Macs with Thunderbolt, but in my experience the performance is underwhelming compared to a good 10GbE card (no send/receive offload, etc). I'm beginning to hate Macs.