The Thunderbolt 3 wording for the new low end non-Touchbar 13" MBP needs reviewing

[bxs]

Reviewing the Apple web page http://www.apple.com/macbook-pro/specs/ Tech specs you will note it says

Two Thunderbolt 3 (USB-C) ports
with support for:

Charging
DisplayPort
Thunderbolt (up to 40 Gbps)
USB 3.1 Gen 2 (up to 10 Gbps)

Now if one pulls up the Apple+Option -> System Information... you will note that the two Thunderbolt ports are rated at 20 Gbps and not 40 Gbps.

Thunderbolt 3 is 40 Gbps and not the stated 20 Gbps.

I was in Apple Store today and discussed this wording with the Genius/Sales/Manager and was told.... "It's OK as it says (up to 40 Gbps)."

IMO, it's deceptive of Apple to state these two ports are full Thunderbolt 3.

This support document describes those low-speed ports: https://support.apple.com/en-us/HT207256

This doc states...

MacBook Pro (13-inch, Late 2016, Two Thunderbolt 3 Ports) delivers full Thunderbolt 3 performance on both ports.

which is incorrect as they only provide Thunderbolt 2 performance of 20Gb/s.

 

[cmaier]

It supports 40Gbps.

 

[bxs]

It supports 40Gbps.

Are you implying that running both USB-C ports simultaneously at 20 Gbps provides the "It supports 40Gbps" ?

 

[3pp]

From the very article you posted...
'MacBook Pro (13-inch, Late 2016, Two Thunderbolt 3 Ports) delivers full Thunderbolt 3 performance on both ports.'

What are you talking about...?

 

[cmaier]

Are you implying that running both USB-C ports simultaneously at 20 Gbps provides the "It supports 40Gbps" ?

No. It supports 40 per port.

 

[bxs]

No. It supports 40 per port.

Then please explain this as reported by the System Information display for the two Thunderbolt3/USB-C ports....

 

[bxs]

From the very article you posted...
'MacBook Pro (13-inch, Late 2016, Two Thunderbolt 3 Ports) delivers full Thunderbolt 3 performance on both ports.'

What are you talking about...?

See Post #6.

 

[Macalway]

It's perhaps a bug in the system info. It's the first thing I looked at with mine.

I would tend to believe the support document. I mean, think about it. They aren't going to screw up to that extent. Having a bug in the sys is much more likely. Of course you can always test this.

Then again, it would be amusing if it was true, no?

 

[curmudgeonette]

Then please explain this as reported by the System Information display for the two Thunderbolt3/USB-C ports....

See the "x1" after the "20 Gb/s"? Each Thunderbolt port has two outbound lanes (and two inbound lanes). Each lane is 20 Gb/s, and the two (in the same direction) together make 40 Gb/s.