They looks the same. It's SFF-8470
Is it ok to buy a "10Gbase-CX4" cable for an infiniband network ?
Yes.
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...
Following two sections are direct quote from Wikipedia
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
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.