IF, in fact, Apple wants to expand their in house (or at least directly controlled partner) chip usage all the way to the workstation level - why even do an Intel mMP? Let the iMacPro hold people over until a new school mMP is ready for prime time. With better eGPU support finally available, many power users would be able to add some muscle via external boxes to get by.
Cheers
There have been a few takes from chip experts thinking this is a negotiation tactic for getting a better price from Intel. The rumor itself said that Apple may still cancel or delay the project, which screams negotiation threat.
The other option is that Apple might do low end on ARM and high end on Intel. Of course people thought that's how PowerPC -> Intel would go, and Apple had everything moved over in a year. But some analysts today were nothing that there hasn't been any evidence that Apple's ARM chips could scale to the high end still, which could fit with Apple going dual architecture.
But trying to estimate where Apple is going to go based on them doing something both involving negotiations with Intel and prototype chip design, especially if we throw some unknown Mac Pro design in the mix, is going to be pretty difficult.
There is EFI support coming to generic ARM architectures, and Apple's T2 both manages proprietary boot and can handle EFI, so ARM doesn't even necessarily shift that discussion around. T2's boot loader would need some changes though as it's still built around interfacing their proprietary boot with the Intel chips support for EFI.
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No more Thunderbolt port equipped monitors: problem solved.
Display Port, HDMI (latest port versions) and/or USB Type C should suffice, no?
I don't think Apple will ever stop supporting Thunderbolt, but I'm starting to suspect their next display will not be a Thunderbolt display. You could use a DisplayPort display either directly with a Mac Pro's GPU's DisplayPort, or use an adapter with Thunderbolt.
But getting away from Thunderbolt as the primary supported link to a display get's them away from the bandwidth limitations USB-C and Thunderbolt place on DisplayPort, and the problems that arise when you talk about thinks like 8k displays, 120hz, or a larger number of 5k displays.
And with Thunderbolt docks, you don't really need to worry about making the display a dock anymore. You also don't have to worry about using the Apple Pro Display with eGPU, DisplayPort would make that work.
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Not,, you are wrong.
First you cant take a full duplex interface and convert to half duplex unless its foresee in its protocol (as some COMM ports), simple this interrups the protocol every time you send data in one direciton you need a feedback to acnowledge the data was properly delivered w/o errors.
What are you talking about? I'm saying this is possible because the interface is full duplex. Where did I talk about converting to half duplex.
Second, PCIe is FULL DUPLEX on a a single copper line, it uses different signal schemes to keep it dual channel active in both directions at the same time, but cant reverse this signal.
Dude. Who are you arguing with?
My entire point was that because PCIe is full duplex there is a huge chunk of upstream bandwidth that generally goes unused on GPUs.
Half duplex has nothing to do with anything I'm talking about. That's the whole point.
The Point, is you propose something 'possible' for Almighty Apple, when your proposal, besides being technically flawed, its impractical, and more expensive than other paths already developed by Apple in the tcMP.
All I'm talking about is sending DisplayPort 1's and 0's over the unused upstream PCIe bandwidth to a different chip on the system. Completely technically possible. But inconvenient to your pretty badly tarnished at this point Mac Pro prediction.
I'm not upset on my predictions, I dont know what Apple will sell, I dream I could put at least nVidia Compute GPGPU (gpu/w/o frame buffers, useful only for compute), but one thing its sure Apple cant build an mMP with TB3 and STD PCIe GPUs, the solutions range from commisions std GPU with an new internal DP connector, or re-cycle the tcMP solution to link the GPU's PCIe/DP/Fabric to the Motherboard using an NON std solution, propietary or not, to me a thing its sure the mMP wont arrive with STD GPU solution, unless APPLE diches TB3, and even TB3 Titan Ridge requires USB-C Alt mode to deliver DP1.4 signals.
You're offered no evidence what I've suggested is impossible besides ranting about half duplex mode for no apparent reason and just saying "it's impossible" over and over again.
If you can send a HDMI signal over TCP/IP packets why can't you send DisplayPort over PCIe packets? I've yet to hear why the DisplayPort 1's and 0's can't be sent over a different medium than a DisplayPort cable besides you just rambling about half duplex.
Heck, if you have a problem with that, Intel could put a DisplayPort encoder on the Thunderbolt controller and let the GPU send frames to that over the PCIe bus. I'm not even suggesting a specific implementation. There are about a bajillion ways to do this. As others have said, Intel and AMD could even brute force it like others have said and just make internal cabling a standard.
My suspicion that it will be a standard is because this problem exists on all AMD and Intel workstations, and instead of Apple solving it themselves and having to commit resources to some proprietary thing, I think Apple is just likely to tell AMD and Intel to fix it across the board.
Which would sync up well to a long development cycle for a Mac Pro, that according to the latest rumors, won't ship until 2019.