4 ms·

I'm not mad that it's 10GBASE-T, but I'd personally rather 10G over SFP+. The sorts of shops that can afford these probably already have some pretty burly netwo

I'm not mad that it's 10GBASE-T, but I'd personally rather 10G over SFP+. The sorts of shops that can afford these probably already have some pretty burly networking infrastructure, and 10GBASE-T is both expensive and (IME) less reliable. The encoding/decoding capacity of Ethernet-over-twisted-pair seems to be reaching a point of sharply diminishing returns and the hardware for 10GBASE-T is really expensive for what's been, in my experience, a less reliable experience than SFP+. I'd rather tell somebody who needs 10GBASE-T to use an RJ-45 adapter than to have to go grab yet another Mellanox card to stick in a computer this expensive.

cm2187 7y ago
But isn't SFP+ not compatible with 1G (i.e. can only be used with a 10G network equipment)? If you are selling a machine that people will plug into either a 1gbe or 10gbe network, you'd rather have some interface that can downgrade.
- buildbot 7y ago
  You can use SFP in an SFP+ socket, but not the other way around. The downgrade to 1GB would work fine. Since this is still a desk focused machine vs. datacenter, I'd expect most offices to be wired to cat6 ethernet which can do 10GB if needed vs. SFP+ cables or SFP+ to Fiber.
  - eropple 7y ago
    That, and I'd still expect an RJ-45 port somewhere.
  - Hikikomori 7y ago
    Not always true, it needs explicit support for SFP as it's not backwards compatible.
- Unklejoe 7y ago
  You can find SFP+ modules that support both 10G and 1G.
Nexxxeh 7y ago
>but I'd personally rather 10G over SFP+. Is that the wrong way around? I'm struggling to parse otherwise.
- santadakota 7y ago
  Another way to say 10G via an SFP+ transceiver, as opposed to 10G via twisted pair. 1) https://en.wikipedia.org/wiki/Small_form-factor_pluggable_transceiver#10_Gbit/s_SFP+ https://en.wikipedia.org/wiki/Small_form-factor_pluggable_tr... 2) https://en.wikipedia.org/wiki/Ethernet_over_twisted_pair https://en.wikipedia.org/wiki/Ethernet_over_twisted_pair
- yjftsjthsd-h 7y ago
  Read as s/over/on/

cm2187 7y ago

But isn't SFP+ not compatible with 1G (i.e. can only be used with a 10G network equipment)? If you are selling a machine that people will plug into either a 1gbe or 10gbe network, you'd rather have some interface that can downgrade.

buildbot 7y ago
You can use SFP in an SFP+ socket, but not the other way around. The downgrade to 1GB would work fine. Since this is still a desk focused machine vs. datacenter, I'd expect most offices to be wired to cat6 ethernet which can do 10GB if needed vs. SFP+ cables or SFP+ to Fiber.
- eropple 7y ago
  That, and I'd still expect an RJ-45 port somewhere.
- Hikikomori 7y ago
  Not always true, it needs explicit support for SFP as it's not backwards compatible.
Unklejoe 7y ago
You can find SFP+ modules that support both 10G and 1G.

Nexxxeh 7y ago

>but I'd personally rather 10G over SFP+. Is that the wrong way around? I'm struggling to parse otherwise.

santadakota 7y ago
Another way to say 10G via an SFP+ transceiver, as opposed to 10G via twisted pair. 1) https://en.wikipedia.org/wiki/Small_form-factor_pluggable_transceiver#10_Gbit/s_SFP+ https://en.wikipedia.org/wiki/Small_form-factor_pluggable_tr... 2) https://en.wikipedia.org/wiki/Ethernet_over_twisted_pair https://en.wikipedia.org/wiki/Ethernet_over_twisted_pair
yjftsjthsd-h 7y ago
Read as s/over/on/