Table 2: Supplier Worksheet Results
| InfiniBand Vendor | 10GbE iSCSI Vendor | |
| 10 Gbit/s InfiniBand | $22 | N/A |
| 10 Gbit/s Ethernet (CX4) | $128 | $50 |
| 4 Gbit/s Fibre Channel | $285 | $388 |
| Gigabit Ethernet | $58 | $125 |
| Source: Undisclosed vendors. | ||
There are a couple of surprises here: First, if one uses the price-per-gigabit metric, it does look (as some sources insist) as though InfiniBand is a good buy after all -- coming in lower even than gigabit Ethernet. And 4 Gbit/s Fibre Channel looks like a better deal than 2 Gbit/s by the same measure.
Without the price-per-gigabit calculation, InfiniBand runs behind 4 Gbit/s Fibre Channel in terms of costs per switch port, even though it's cheaper in adapter costs.
As for 10 Gbit/s Ethernet, it's no surprise to see it still up in the ether price-wise. After all, that's why components vendors are peddling new wares aimed at lower-priced finished goods starting in 2009.
The villain of the piece looks like 2 Gbit/s Fibre Channel, which seems to cost more than 4 Gbit/s FC overall. But there are lots of variables: A 4 Gbit/s switch with 2 Gbit/s may not have the same negative price profile.
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