4 ms·
Thirty dollars for a three foot cable still sounds like highway robbery to me.
by causality0 4y ago
Thirty dollars for a three foot cable still sounds like highway robbery to me.
- NavinF 4y agoNot really, this is just what happens when you use copper for 40gbps. Consider that 1 meter QSFP DACs are also $30. $/m gets a lot cheaper with longer fiber cables. They're more flexible too
- Teknoman117 4y ago> $/m gets a lot cheaper with longer fiber cables. They're more flexible too Pretty much. The cost of the optics amortizes at a certain length. You also don't have to worry about breaking something super expensive if you accidentally damage the fiber (for shorter runs). Consider some of the DAC cables for the new 800 GbE standard cost $1300 for a 2 meter cable.
- Teknoman117 4y agoWe're not just talking about a random wire through a cable at this point. Transmitting multi-gigahertz signals through a copper conductor is complicated. These types of signals are extremely vulnerable to the impedance of the cable, capacitive losses, etc. Producing a cable that stays in spec over some large arbitrary length while taking the abuse of being wiggled around all the time is expensive.