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Thread: [arstechnica] Thunderbolt 3 becomes USB4, as Intel’s interconnect goes royalty-free Reply to Thread
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  Topic Review (Newest First)
03-13-2019 03:59 PM
EniGma1987
Quote: Originally Posted by Apokalipse View Post
Most of the latency over USB comes from the protocol overheads.

Thunderbolt is basically just an implementation of PCI-E, which has much lower overheads, and DMA access.

And USB 4.0 seems to just be a rebrand of Thunderbolt 3.

The port just has the ability to switch back to the 'regular' USB protocol, rather than the PCI-E based protocol.

Anyway, Intel were supposed to have released the protocol a few months ago. I wonder why they didn't? To screw with the timing of AMD being able to implement it in Zen v2 chipsets?



Wasnt Thunderbolt 3 simply running over a normal USB 3.1 gen 2 USB-C port only using 4 of the lanes instead of 1-2 lanes? It would seem to me that any latency improvements TB3 has would also be present in newer USB that we already have.
03-13-2019 11:35 AM
Lady Fitzgerald
Quote: Originally Posted by Apokalipse View Post
...And USB 4.0 seems to just be a rebrand of Thunderbolt 3...
The thread title and the linked article pretty much said just that that.
03-13-2019 09:24 AM
brentsg
Quote: Originally Posted by JackCY View Post
Who uses TB anyway except fanatic Apple users.
I've made sure it's on every motherboard I've purchased since TB2 became a thing. It's amazing for external SSD's and single cable connectivity to my display (USB+DisplayPort). The latter lets my monitor's input selector switch function as a KVM switch.

Quote: Originally Posted by VeritronX View Post
TB is also useful for ITX systems as you can add a 10GBe adaptor using it that otherwise wouldn't be possible due to board size restraints etc.
I'm in the process of doing exactly this with an Asrock ITX board as well.
03-12-2019 03:27 PM
Apokalipse
Quote: Originally Posted by TheHorse View Post
Hello, I'm physics of the universe, I'd like to sit down and tell you all about latency.
Most of the latency over USB comes from the protocol overheads.

Thunderbolt is basically just an implementation of PCI-E, which has much lower overheads, and DMA access.

And USB 4.0 seems to just be a rebrand of Thunderbolt 3.

The port just has the ability to switch back to the 'regular' USB protocol, rather than the PCI-E based protocol.

Anyway, Intel were supposed to have released the protocol a few months ago. I wonder why they didn't? To screw with the timing of AMD being able to implement it in Zen v2 chipsets?
03-12-2019 03:29 AM
zeroibis
Quote: Originally Posted by m4fox90 View Post
Who uses USB-C for anything except charging their phone?

For charging an X-T3 camera with a USB PD battery lol.
03-11-2019 02:34 AM
m4fox90
Quote: Originally Posted by speed_demon View Post
Your G7 does have thunderbolt 3.

I built a max spec G7 as well but all of them have tb3 automatically.

Out of curiosity how is your lappy handling heat?
Stock settings it gets pretty hot and loud, especially if flat on a desk/thing. But I've played around with some Throttlestop undervolting after watching this video and some others, and it actually fares pretty acceptably for what it is IMO, idling in the low-30s and jumping up into the 70s at most . https://www.youtube.com/watch?time_c...&v=Vq9ACOFApr4
03-11-2019 12:23 AM
speed_demon
Quote: Originally Posted by m4fox90 View Post

The Razer Blade Stealth I bought in February 17 had it, as the charger, and my near max spec Dell G7 may or may not have it, I honestly have no idea and nothing to use it with, even if it has it.
Your G7 does have thunderbolt 3.

I built a max spec G7 as well but all of them have tb3 automatically.

Out of curiosity how is your lappy handling heat?
03-10-2019 08:16 PM
m4fox90
Quote: Originally Posted by andrews2547 View Post
Everyone who's bought a medium/high-end laptop in the last 3 years.
The Razer Blade Stealth I bought in February 17 had it, as the charger, and my near max spec Dell G7 may or may not have it, I honestly have no idea and nothing to use it with, even if it has it.
03-10-2019 05:13 PM
ryan92084
Quote: Originally Posted by m4fox90 View Post
Who uses USB-C for anything except charging their phone?
My keyboard?
03-10-2019 09:56 AM
Melan
Quote: Originally Posted by Skylinestar View Post
Speaking of Apple, the current transfer speed of Lightning cable is still painfully slow.
Because they are still using USB 2 just like the 90% of other android OEMs that didn't bother put USB 3 into their devices.
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