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Usually - always ? - Macs only run on the OSX version they are delivered with, or later versions .

It's a big weakness of Macs, especially since after Mavericks legacy software and hardware compatibility took a big hit .

now, is there literally something that would prevent you from rolling back or is that just a compatibility issue you are likely to run into?
 
Sure, we're "stuck" with PCIe3 in the nMP 7,1, but I think that's missing the point.
1) PCIe3 implementation is pretty mature these days, so you get most of the theoretical bandwidth delivered
2) The new design offers lots of PCIe3 lanes right to the socket
3) Eventually, PCIe3 x16 will be a meaningful bottleneck - but I'd wager several other components will have to advance two full generations before that's the case for more than 1% of workstation tasks.
 
Eventually, PCIe3 x16 will be a meaningful bottleneck - but I'd wager several other components will have to advance two full generations before that's the case for more than 1% of workstation tasks.

GPUs only use a fraction of the total bandwidth in a PCIe3 x16 slot. Most of the people here complaining about it don't need PCIe4. PCIe3 is overpowered for GPUs.

Someday we'll hit the PCIe3 limit. Probably in 10 years people will be here talking about how PCIe3 holds the 2019 Mac Pro back. But for now, PCIe3 is a lot more than most people need.

I think it's like people and HDMI versions where they just have to have the latest even if it's something they'll never use. It's just like people holding out on buying a new receiver because it doesn't support 8k and they're very sure they'll need that someday.

By the time PCIe4 or PCIe5 becomes really necessary, the rest of your Mac Pro will be outdated anyway.
 
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Sure, we're "stuck" with PCIe3 in the nMP 7,1, but I think that's missing the point.
1) PCIe3 implementation is pretty mature these days, so you get most of the theoretical bandwidth delivered
2) The new design offers lots of PCIe3 lanes right to the socket
3) Eventually, PCIe3 x16 will be a meaningful bottleneck - but I'd wager several other components will have to advance two full generations before that's the case for more than 1% of workstation tasks.
pcie3 is an issue when stacked off the PCH.
also it's better to run video cards at x8 x8 then x16
 
PCIe v5 CPUs from which vendor by the end of the year from who? As opposed to just handwaving this is going to happend ... which major CPU vendor is going to deliver PCI-e v5 this year?


AMD? Just did not skip PCIe v4. ( IMHO AMD PCie v5 in 2020 is doubtful. Likely far more focused on a process shrink and opening clock/power gap than adding major new bandwidth change. )
Intel ? Is not shipping any PCIe v5 by the end of the year.
PCIe v4 2020 and maybe PCIe v5 in 2021. https://fuse.wikichip.org/news/2336...r5-pcie-5-0-for-2021-granite-rapids-for-2022/
[ Intel has a 10nm FPGA product with PCIe v5 coming. There are some megabucks (8-digits + ) shops that may deploy some stealth market stuff in 2019 )
IBM ? no ( as linked in early they have slid)
ARM Neoverse? No. PCI-e v4 https://www.anandtech.com/show/13959/arm-announces-neoverse-n1-platform/2
Apple? No they haven't even done x16 PCI-e v3 let alone anything in bandwidth range of double digit PCI-e v4.

Similarly on the GPU side?
AMD ? No. just did not skip PCIe v4.
Nvidia? Probably not ( nothing to couple to with IBM CPU with v5 yet. Leaning on Nvidia-Link to GPU-to-GPU , and graphics isn't a major driver.)
[ Nvidia's recently acquired Mellonix didn't skip PCIe v4 at all.
https://ir.mellanox.com/news-releas...es-industrys-first-pcie-gen-4-openpower-based ]



If there is not CPU provisioning it for year(s) there isa bout zero real "need" in the current context.

The real "need" issue is whether PCI-e v4 bandwidth speeds are useful. They are. There is almost nobody whose computations are completely pragmatically blocked until get to PCI-e v5 speeds.

And "need" is always balanced against cost (and reliability). There are pros with bigger budgets but if tack on another zero/digit to the price, many will drop out. ( even without another digit but just a 120% increase for Mac Pro. )




LOL. No one, including me, said anything even remotely like that. PCIe v4 not being completely skipped has absolutely nothing with semi-permanently capping folks at PCI-e v3 for next 2-3 years.

The core issue is that while PCI-e v5 just pasted 1.0 standardization, it will take time to work that standard into products and to completely the testing/compatibility testing regime required to make that into a viable broad market.
Getting "in design phase" CPUs out the door is often a 2+ year timeline. No one is going to whip out a new CPU over the next 6-8 months having started after PCI-e v5 came up for final vote.



As for when PCI 5 comes out, maybe youre right, maybe youre wrong. Let's see what happens by the end of the year. And if you're wrong, I expect photos crow eating.
 
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Two reasons for shipping with Mojave: 1) support for older 32 bit apps. Some professionals might still need that old app that would not run on Catalina. 2) Mojave have been battle tested and is less prone to issues at this point in time. Another important point for professionals that need reliability above all.

Finally, if they really aim for a September shipment, Catalina won’t be ready.

I am thinking 100% Catalina 100% 64-bit "Clean"
 
What does "clean" mean, and what is the advantage of "clean"?

ps: "case preserving" is the future

It doesn’t include the 32 runtime environment and the overhead of having it. It’s kind of like running a copy of WINE in the background, so no performance/memory/disk space overhead of that.

But it’a entirely a software deal so i don’t know why it would have anything to do with a Mac Pro launch.
 
GPUs only use a fraction of the total bandwidth in a PCIe3 x16 slot. Most of the people here complaining about it don't need PCIe4. PCIe3 is overpowered for GPUs.

Someday we'll hit the PCIe3 limit. Probably in 10 years people will be here talking about how PCIe3 holds the 2019 Mac Pro back. But for now, PCIe3 is a lot more than most people need.

I think it's like people and HDMI versions where they just have to have the latest even if it's something they'll never use. It's just like people holding out on buying a new receiver because it doesn't support 8k and they're very sure they'll need that someday.

By the time PCIe4 or PCIe5 becomes really necessary, the rest of your Mac Pro will be outdated anyway.

Doesn't PCIe4 give you higher performance though? Even though it doesn't saturate the bandwidth (I thought that's. how AMD has gotten it's performance gains with the 5700 XT etc

https://www.digitaltrends.com/computing/does-pcie-4-matter/

I am thinking 100% Catalina 100% 64-bit "Clean"

I'm guessing that the majority of professional apps won't be ready for Catalina for me Avid Media. Composer, Native Instruments Komplete, Ableton come to mind
 
Doesn't PCIe4 give you higher performance though? Even though it doesn't saturate the bandwidth (I thought that's. how AMD has gotten it's performance gains with the 5700 XT etc

No. If, a 4 lane highway got 4 more lanes, totaling 8 lanes and there are zero traffic on the road--a Lamborghini won't suddenly become faster. If, the Lambo is capable of going, say 200 MPH... 4 extra lanes will not make it go 201 MPH. Unless of course, gravity takes the Lambo there due to, for example, a downhill....
 
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No. If, a 4 lane highway got 4 more lanes, totaling 8 lanes and there are zero traffic on the road--a Lamborghini won't suddenly become faster. If, the Lambo is capable of going, say 200 MPH... 4 extra lanes will not make it go 201 MPH. Unless of course, gravity takes the Lambo there due to, for example, a downhill....

haha good analogy
 
Doesn't PCIe4 give you higher performance though? Even though it doesn't saturate the bandwidth (I thought that's. how AMD has gotten it's performance gains with the 5700 XT etc

https://www.digitaltrends.com/computing/does-pcie-4-matter/

This article talks about being able to use less lanes for a GPU. For example, you could probably run a GPU off of a PCIe4 4x slot. Which is fine and all, but the new Mac Pro isn't exactly low on slots or lanes. With one or two GPUs you won't even come close to running out of PCIe lanes. On consumer boxes with fewer CPU lanes, that could make a big difference. On a workstation with a lot of PCIe lanes already? Not so much.

That's not making things faster, it's just a question of how many cards you can install in your box.

I think the other advantage of PCIe 4.0 is it delivers more power over the slot, and might remove the need for PCIe power boosters in some cases. That's nice, but I'd guess that most cards will continue to ship with power booster connectors for backwards compatibility, and situations when the motherboard doesn't have any more power to deliver to a slot. Plus, the Mac Pro's primary GPU interface is still MPX, which delivers even more power.
 
This article talks about being able to use less lanes for a GPU. For example, you could probably run a GPU off of a PCIe4 4x slot. Which is fine and all, but the new Mac Pro isn't exactly low on slots or lanes. With one or two GPUs you won't even come close to running out of PCIe lanes. On consumer boxes with fewer CPU lanes, that could make a big difference. On a workstation with a lot of PCIe lanes already? Not so much.

That's not making things faster, it's just a question of how many cards you can install in your box.

I think the other advantage of PCIe 4.0 is it delivers more power over the slot, and might remove the need for PCIe power boosters in some cases. That's nice, but I'd guess that most cards will continue to ship with power booster connectors for backwards compatibility, and situations when the motherboard doesn't have any more power to deliver to a slot. Plus, the Mac Pro's primary GPU interface is still MPX, which delivers even more power.


Also RAID NVME on a PCIE card could probably saturate the bandwidth
 
Also RAID NVME on a PCIE card could probably saturate the bandwidth

Maybe, but there is no upside to cramming more than 4 NVMe drives on one card, which is below the bandwidth of a single slot. You could spread them across multiple cards. And the Mac Pro definitely has room for multiple cards.

Eventually you’d run out of lanes across multiple cards, but I’m not sure how many NVMe blades we’d be talking about total.
 
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Maybe, but there is no upside to cramming more than 4 NVMe drives on one card, which is below the bandwidth of a single slot. You could spread them across multiple cards. And the Mac Pro definitely has room for multiple cards.

Eventually you’d run out of lanes across multiple cards, but I’m not sure how many NVMe blades we’d be talking about total.

Each nvme stick does about 3.5gb/sec. so 4 would get you to 14gb/sec in raid 0. 8 lanes on pcie 3 gives you around 16gb/sec iirc. 16lanes gets you to 32gb/sec. so you’d need around 8 sticks of nvme ssds on a single card to saturate a 16lane slot.
 
Doesn't PCIe4 give you higher performance though? Even though it doesn't saturate the bandwidth (I thought that's. how AMD has gotten it's performance gains with the 5700 XT etc

https://www.digitaltrends.com/computing/does-pcie-4-matter/



I'm guessing that the majority of professional apps won't be ready for Catalina for me Avid Media. Composer, Native Instruments Komplete, Ableton come to mind

Every1 has plenty of time. Given the the nMP is partly geared towards audio pro's then I would be mind blown if those big players didn't already have compatibility locked. Save for maybe Avid!
 
Every1 has plenty of time. Given the the nMP is partly geared towards audio pro's then I would be mind blown if those big players didn't already have compatibility locked. Save for maybe Avid!

they always seem to have the same amount of time and are never ready when a new OS comes out, but I have seen Avid Protools displaying a MacPro at their headquarters on Instagram, filled with 6 HDX cards apparently
 
they always seem to have the same amount of time and are never ready when a new OS comes out, but I have seen Avid Protools displaying a MacPro at their headquarters on Instagram, filled with 6 HDX cards apparently
That’s partly Apple not being transparent/rushing people with yearly updates and partly software guys wanting to do no work and charge you for it if possible, but given they name-dropped a lot of companies for partnerships I imagine they’ve had a bit more access and time to prep than the usual.
 
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HP just launched the Z6 G4 workstation with a price starting from $1,969 and with the option to add a second processor (up to 48 cores).
 
HP just launched the Z6 G4 workstation with a price starting from $1,969 and with the option to add a second processor (up to 48 cores).

Can only take half the RAM of a Mac Pro (and then only with 2 CPUs installed) - Amateur Hour. :p

(And if the emoticon is not enough - I am kidding here, folks).
 
HP just launched the Z6 G4 workstation with a price starting from $1,969 and with the option to add a second processor (up to 48 cores).

Once again, the entry level is a 1.6 ghz processor. o_O The default config is a blistering 1.7 ghz.

If you configure like the 2018 Mac Pro base model, the price is $6677.55.

There is more general configurability. You can configure it at 1.6 ghz is you really are crazy enough and intent on not getting a much better i7 or i9 for cheaper. Second CPU option at the extreme other end. Ability to add optical drives. But it doesn't seem like the better deal unless you really need those things.
 
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