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They looks the same. It's SFF-8470

Is it ok to buy a "10Gbase-CX4" cable for an infiniband network ?


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These are basic CX4 (Infiniband) cables.

I use them for 10GbE and external SAS connectivity (host->tape drive or host->enclosure). (sometimes actual Infiniband, too!)

For me, it was initially a cheaper way to get into 10-Gigabit storage networking before the standards solidified. CX4 10GbE is considered passé, though, because they are big, stiff and thick...

enter image description here

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This should work in a 4X infiniband network. See 802.3ak

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Following two sections are direct quote from Wikipedia

Effective unidirectional theoretical throughput (actual data rate, not signaling rate)

         SDR       DDR       QDR     FDR-10           FDR        EDR
 1X  2 Gbit/s  4 Gbit/s  8 Gbit/s  10 Gbit/s  13.64 Gbit/s  25 Gbit/s
 4X  8 Gbit/s 16 Gbit/s 32 Gbit/s  40 Gbit/s  54.54 Gbit/s 100 Gbit/s
12X 24 Gbit/s 48 Gbit/s 96 Gbit/s 120 Gbit/s 163.64 Gbit/s 300 Gbit/s

Physical Interconnection

InfiniBand uses copper CX4 cable for SDR and DDR rates — also commonly used to connect SAS (Serial Attached SCSI) HBAs to external (SAS) disk arrays. With SAS, this is known as an SFF-8470 connector, and is referred to as an "InfiniBand-style" Connector. The latest connectors used with QDR and FDR are QSFP (Quad SFP) and can be copper or fiber, depending on the length required.

So depends on speed.

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Does this information help? – John Siu Feb 3 '13 at 23:37

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