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gerrard0804

macrumors regular
Original poster
Sep 12, 2010
176
23
Gonna pull trigger on Mac Pro 2019 soon, but........

Just concerned if it will be soon outdated as it does not come with the support of pcie4.0 motherboard as intel does not have any cpu that supports it.

Do you think Apple will soon update its motherboard for Mac pro that supports pcie4.0?
 
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fhturner

macrumors 6502a
Nov 7, 2007
632
413
Birmingham, AL & Atlanta, GA
My first thought would be: how much bandwidth for expansion do you anticipate actually needing? The MP7,1 has 64 lanes of PCIe 3.0, which amounts to nearly 64GB/s of bidirectional throughput. A quad-NVMe RAID0 might hit 10-12GB/s, but you have to work pretty hard to get that and then utilize it effectively after that. While I'll agree that having the latest specs and protocols is always nice, I'm just not sure how much of a difference that would make for the foreseeable future...

Oh, and no, I don't think Apple will update the motherboard anytime soon. At their present rate of "maintenance"/refresh, we'll be lucky if there's an updated Mac Pro 2023.
 

OkiRun

macrumors 65816
Oct 25, 2019
1,005
585
Japan
My first thought would be: how much bandwidth for expansion do you anticipate actually needing? The MP7,1 has 64 lanes of PCIe 3.0, which amounts to nearly 64GB/s of bidirectional throughput. A quad-NVMe RAID0 might hit 10-12GB/s, but you have to work pretty hard to get that and then utilize it effectively after that. While I'll agree that having the latest specs and protocols is always nice, I'm just not sure how much of a difference that would make for the foreseeable future...

Oh, and no, I don't think Apple will update the motherboard anytime soon. At their present rate of "maintenance"/refresh, we'll be lucky if there's an updated Mac Pro 2023.
I think 2023 is optimistic.
 

fhturner

macrumors 6502a
Nov 7, 2007
632
413
Birmingham, AL & Atlanta, GA
I should clarify further: I realize that half of the 64 lanes can be used up if you have 2 MPX cards or 2 GPUs in slots 1 & 3, but still, you're talking 32GB/s for the rest. I reckon maybe you *can* soak up all of that if you really try, but are you actually going to be maxing out that bandwidth and running into limitations that affect what you're doing? I'd be impressed if so.
 

OkiRun

macrumors 65816
Oct 25, 2019
1,005
585
Japan
Gonna pull trigger Mac Pro 2019.

Just concerned if it will be soon outdated as it does not come with the support of pcie4.0 motherboard as intel does not have any cpu that supports it.

Do you think Apple will soon update its motherboard for Mac pro that supports pcie4.0?
You haven't told us what configuration you are ordering and what you're going to be doing with it....
 

gerrard0804

macrumors regular
Original poster
Sep 12, 2010
176
23
You haven't told us what configuration you are ordering and what you're going to be doing with it....
haha,, had been using iMac pro 3 months ago for daily use on mac OS for multi-media sake, youtube/playing video, viewing pics, some administration works for my jobs,, no heavy applications to run at all actually. Additionally, to play some games on Windows 10 bootcamp. I sold the imac Pro and been waiting for this long. just love that XDR pro display to play in my room.

I plan to get the 16 cores cpu/single vega II/32gb ram(upgraded to 192gb myself later)/ 4TB SSD.
 

G4DPII

macrumors 6502
Jun 8, 2015
401
544
We have barely reached the ful limitations of PCIe 3.0, very little hardware uses it to it's full potential. Whilst it is always nice to have the latest and greatest for upgrade purposes and prolong the life of a system.

Given the track record Apple have in updating the Mac Pro, it'll probably skip PCIe 4.0 and go straight on to PCIe 5.0.
 

ssgbryan

macrumors 65816
Jul 18, 2002
1,488
1,420
Does it matter today? No.

Will it matter to everyone that swears they will hang on to their 7,1 for 5 years (or more), Yes.

It isn't just what you need today - it is what you will need tomorrow.
 
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OkiRun

macrumors 65816
Oct 25, 2019
1,005
585
Japan
Does it matter today? No.

Will it matter to everyone that swears they will hang on to their 7,1 for 5 years (or more), Yes.

It isn't just what you need today - it is what you will need tomorrow.
Not to put words into the OPs mouth... but it seems like the 7.1 is a purchase he wants and not so much 'has to have'...
 

jscipione

macrumors 6502
Mar 27, 2017
429
243
It will matter in the long run but is fine right now. If you plan to keep using the Mac Pro 7,1 for the next 10 years PCIe 3.0 will become just as much a handicap as PCIe 2.0 is on the old Mac Pros. With PCIe 5.0 due out next year maybe wait for the 8,1, but be prepared that this could be a long wait.
 

Schismz

macrumors 6502
Sep 4, 2010
343
395
It's an incredibly simple equation:

1- Do you need a Mac Pro now? If yes, buy one and derive immediate benefit/enjoyment.

2- Do you want a Mac Pro now, but don't really need it? If you have sufficient disposable income that it really doesn't matter, then buy it and derive immediate benefit (measurable in happiness/enjoyment vs. dollars it's making you).

3- Don't buy Mac Pro because a) it doesn't meet your needs/desires/emotional state pro/con Apple, b) you can't afford it. c) you're waiting for the next model because it'll be better (but flawed in different ways which produce the same dynamic and endless series of conversations no matter what Apple does, be that PCIe, AMD, Mega-ARM chips, or Tesla anti-gravity package instead of feet or wheels).

Corollary to c above: the Mac Pro lives in a special alternate universe where time works differently than other Apple products/rest of this universe (but may be compatible with other parts of multiverse). Next update may take half a decade, longer, or possibly forever, because this was the last Cheesegrater. Apple may decide that The Cube(s) failed, The Trashcan failed, stacking Mac minis isn't sexy enough, and cumulative total sales of 7,1 -- due to high entry price, and roughly 60 day window of time wherein it was actually available for sale before Coronavirus crashed world economy -- inclusive of institutes, studios, 35 crazy people who post to this site, and ultra high net-worth individuals who are tech bros and want a 40-50lb giant metal sculpture sitting on their desk, was less than 5,000 units sold; therefore the most logical NeXTSTEP is to introduce Floating Spheres Hovering around Pyramid (which houses quantum CPU) and sell base unit starting @ $175K. Improved Mac Pro will feature revolutionary T5 chip with AI that knows exactly what's best for you without taking input from user (can be disabled using 2 paperclips and a soldering iron).​
Anything is possible -- except Apple making a less expensive version, or getting over their hatefest with Nvidia -- absolute silence/nothing for many years is most probable based upon Apple's actions for past decade coupled with recession we're entering.

Pardon me, gotta get back to doing my part to save the world and remaining socially distant while staring at candlestick patterns on momentum oscillators for stock market -- Ohhhh, technicals are flashing skull & crossbones, Hindenburg pattern last seen on Black Tuesday in 1929, and indicate Swarm of Locusts is coming, so we're nowhere near bottom yet -- and I realize it's been nearly 2 hours since I refilled my drink, gotta go. Cheers!
 
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sam smith 2020

macrumors newbie
Apr 4, 2020
1
2
Before the trashcan, macs were upgraded/replaced regularly, the mp5.1 unexpectedly remained for 3 years, then the 6.1 hung around for 6 years. [facepalm]

Is PCIe 3.0 an issue? Not at this moment, even the RTX2080ti can't suck up more data than PCIe 2.0 x16 can deliver.
(click on the link, and see the whole article)

One day there will be graphics cards that need more bandwidth than 3.0 can deliver, but any time soon. Looking at the graphs PCIe 2.0 x4 gives performance not that far behind PCIe 3.0 x16, so no massive bottle neck there then.
More surprising (at least to me) is that PCIe 2.0 x4 has a data transfer rate of 2.00 GB/s, where as back in the day, laughably obsolete old AGP 8x gave 2.133 GB/s. (IIRC)
So yes, one day there almost certainly will be graphics cards than need more data than PCIe 3.0 can deliver, but probably not in the next 10 years, plus there's no guarantee they'll be built for a PCIe slot if/when they finally do arrive.


So, is PCIe 3.0 an issue? I wouldn't loose any sleep over it.
 
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