JonDol :
genz :
Ken Snyder :
But correct me if i'm wrong but 2 is not enough is it? I mean 2 really means 1. One to connect it to your computer and one to do something else. It's basically just a passthrough. Also wondering for those of us driving 3 monitors (built-in and two external), is there no benefit to both monitors being plugged into the eGPU? Maybe that's not important but I'd have thought it would help.
Thunderbolt is an Apple Intel joint venture. Whenever anyone else uses one, they must pay Apple-Intel around $30 per socket. Apple intended it to be used like FW and everyone have two to daisy-chain, as the technology is noticeably slower when split, than chained.
As far as I remember, a few weeks after the USB 3.2 specs were released they announced the TB would no longer require licence fees...
This is a bit misleading alone. The 3.2 style, USB-C looking ports are royalty free, probably as much due to the fact that 3.2 is basically TB3 = USB-C 3.1 x4 mode, and easy to implement due to the change in port. This is, by design admission of defeat in a way, as it would be as if Betamax's final solution was to only make Betamax/VHS combo units that were incompatible with prior Betamax without add-ons, then placing the cost of add-on high and making the base unit cheap, although they switched to being a USB modder in a sense.
The TB2 ports are different and still require licensing. They are the ones that benefit from the daisy-chaining.
The MiniDisplayPort standard is free too, but TB and TB2 specifically still require Apple-Intel fees, and that naturally means the adapter to TB2 does too, hence it's steep prices everywhere. Oh, and the actual device, naturally.
Apple is driving the strategy to isolate the device. No license fees will ultimately mean more devices opt for TB3 over TB2 or now equally priced USB-C, and the thickness drive will mean no space for other options. The large majority of those devices will be USB-C due to USB market dominance. Every dongle will have a price associated with its relative speed. This suddenly makes TB2 support much more widespread for the current products on sale, and probably not worth the cost of a redesign to fit USB-C/TB3 alone until full refresh, if at all. When they have the (license fee paid) device, then Apple sell the cheapest dongle but still 50 over a USB-C to USB. Wise chess moves.
I expect TB4 to come with a 250W TDP and support for direct GPU interface over the cable. Could mean the appearance of PCI-E-less GPUs that run off the wire.