bkkcanuck
About
- Username
- bkkcanuck
- Joined
- Visits
- 35
- Last Active
- Roles
- member
- Points
- 702
- Badges
- 1
- Posts
- 864
Reactions
-
Mac mini: What we want to see in an update to Apple's low-cost desktop
maciekskontakt said:If you have Thunderbolt then you can upgrade graphics. You do not need to use internal one. Internal PCI? Why nobody goes this way anymore. Just buy eGPU wiith fast Thunderbolt transfers
Thunderbolt has overhead, Thunderbolt is limited to 4 PCIe lanes, Thunderbolt does not have the full bandwidth available on a top of the line graphics card requires.
There is a reason why the graphics cards are recommended to go in the slot closest to the CPU, and they use 16 PCIe lanes without the overhead of the Thunderbolt PCIe protocol.
The more powerful the graphics card, the more the impact.
When you get to the top end of the graphics card you basically throwing away a good 30% of the performance. The price difference between that card and a lesser card of 30% less performance is hundreds of dollars.
Thunderbolt is basically taking 4 PCIe lanes, running them along a wire, into another box that has PCIe slots, another power supply etc. You are talking about hundreds of dollars wasted on an eGPU box, a couple hundred dollars of lost performance on the graphics card, the $100 for the Thunderbolt cable.
Talk about a waste! -
Intel's first 10nm 'Cannon Lake' processor with 32GB LPDDR4 RAM support ships
MacPro said:This explains why all the sudden massive discounts of Mac Book Pro models reported on AI these last few days I suspect. Well, I only want a MBP for casual use so I grabbed a MBP with touch bar from Adorama thanks to the AI advertorial and have no regrets, heck of a saving.
Will Apple use the Radeon RX Vega M GH Graphics GPUs on the next generation MBPs I wonder?
Even if Intel is able to churn out chips in limited quantity, the ones that Apple needs are typically the ones with the largest die size (usually the high-end graphics variant which takes up considerable die). If there is a high reject ratio then the larger the chip, the larger (exponentially) the number of rejects - basically the cost of the product is more than what they can sell them at that point. It still seems like Intel is at the point where CannonLake for Apple is far away - possibly even into 2020.
Soli said:1) I wonder what the price bump is for an extra 16GiB of RAM.
2) I also wonder if Apple's MBP line will offer bth 16GiB and 32GiB options, or just jump to 32GiB for all models the way they now only offer 16GiB. My guess is they'll offer both capacities.
Apple could put 32GB in right now if they were to use DDR4 instead of LPDDR3 -- but they won't. The impact of changing to DDR4 for the first 16GB and then adding another 16GB of DDR4 drain on the battery - would be significant. As such we have to wait for Intel. It is not that DDR4 consumes more power when active, or it consumes more power when inactive - the truth is that it most likely does not. The difference between the two is that if you use DDR4 memory and it is active, it will not switch down into low power mode unless unused for a significant amount of time. LPDDR3/4 switches from active to inactive almost instantaneously in comparison. With the OS (even with the optimization that Apple did several versions ago), is constantly starting up and scheduling stuff to run in the background - with LPDDR3 it would go active, inactive, active etc. With DDR4 - it would more likely stay active and not have enough time to switch down to inactive... hence it draws significantly more power just to have installed in the computer. For the life of me, I don't know why Intel did not have an architecture update to support LPDDR4 since they obviously have been unable to master the die shrink... maybe they keep on thinking ... just a little more - not worth it... yet it has been years now.
-
Mac mini: What we want to see in an update to Apple's low-cost desktop
nht said:mike54 said:
I think Apple has lost many macOS sales. Most just want a reasonably priced headless mac with decent specs in which the drive and ram can be easily user replaceable. I don't think that's too difficult to do. -
Apple modular Mac Pro launch coming in 2019, new engineering group formed to guarantee fut...
I meant that in regards to the mentioned "128GBps external pci expansion chassis"... that isn't possible for the Mac, unless you could bond multiple TB ports. You're just meaning it's being done in other industries, right?PCI Express 3.0's 8 GT/s bit rate effectively delivers 1 GB/s per lane.
PCI Express 4.0's 16 GT/s bit rate effectively delivers 2 GB/s per lane.
PCI Express 5.0's 32 GT/s bit rate effectively delivers 4 GB/s per lane.
The maximum that your average consumer grade CPU's expansion capabilities are 24 PCIe lanes (I think 4 goes to the chipset; so 20 net). Your average Xeon workstation chip gives you 44 lanes PCIe lanes - for dual CPU Xeon it effectively doubles as it is per CPU. The benefits of Xeon over consumer CPUs is more bandwidth throughput and ECC memory (among others). Thunderbolt only expansion effectively eliminates the first benefit.
Thunderbolt uses either 2 or 4 lanes depending on the implementation.
So the entire bandwidth for a consumer grade CPU can handle currently is theoretically 20GB/s. A Xeon workstation chip would be 40GB/s.
The maximum that 4 lanes to the CPU would have would be 4GB/s or 40Gbps.
---
PCI Express 4.0 will bring with it OCuLink version 2 (an alternative to Thunderbolt) will have up to 16 GT/s (8 GB/s total for × 4 lanes).
Graphics card (if you have one) typically slots into an x16 slot -- if you put them in x4 slot you would be bottlenecking the graphics card (assuming it ran).
---
For high bandwidth expansion -- PCIe for the foreseeable future provides the best bandwidth and cheaper cost of expansion.
-
The 2019 Mac Pro will be what Apple wants it to be, and it won't, and shouldn't, make ever...
k2kw said:danvm said:k2kw said:geirnoklebye said:Soli said:
Bottom line: Apple owes you nothing over what they purchase agreement included, just as you own them nothing but the cost of the machine that you choose to by.
Apple's success was built on the long term commitment if its Macintosh user base and before that the Apple II base. Without this commitment, it most likely would have gone extinct sometime in the 1990-ties.
The expectation from the committed user base is that Apple keep investing in them and their needs, and not just deliver a point in time box like most PC manufacturers do.
Apple used to deliver products that in sum comprised an ecosystem that their committed user base could live happily in, and Steve Jobs in particular understood how important this is for the longevity and continued success of the company.
Under Tim Cook, Apple has started peeling away components of the ecosystem removing items such as screens, not upgrading network components, TM capabilities and capacity, lobotomizing the server software, remove server configurations, not refreshing existing systems for literally years, remove the ability for the users to add and replace components to their system such as disk, memory, GPU, battery and other techcnologies gets cheaper and more capable over the lifetime of the system. Now most configurations are frozen in time, while before they could evolve and serve the user better over its lifetime.
Their obsession with anorexic thinness produce as a result systems cannot be fully utilized or expanded because there is no more room in the thermal envelope for faster components (we see this both in the trashcan and the new iMac Pro), or connecting the system for use in a real world situation leaves the user with a dongle and docking station hell, or a bunch of additional box clutter on their desktops (MacBook Pro, Mac Pro, iMac Pro.) Just to illustrate the madness of the situation, do a quick search for "rack mount for Mac Pro" and have a good laugh!
"Apples survival was built on the long term commitment of his Macintosh user base during the 90's before Jobs returned.
Apples long term success began by extending its "It Just Works" ethos into consumer products beginning with the iPod.
As its success grew with multiple smart mobile products iPhone and iPad Apple dropped the 'Computer' from its name reflect its mainstream consumer emphasis.
With new priorities Apple dropped some existing products like the AirPort Extreme & Express and (temporarily) the MacPro."
Despite the iOS business being much larger Hopefully they will put significant resources into their Pro Computers with this new group.
This also why the new hire of the the Google AI guy is so good.
Lots of Windows programmers like the "It's just works" (and works better) philosophy of Macs when we come home.
(MS is re-inventing itself as a cloud company) because they know they will loose the Wintel monopoly they've had on desktops eventually. Hopefully it is to iOS and not Chrome.
MS is moving it's priorities to the cloud, not because they are losing the desktop market, but because their cloud businesses are growing quicky. The lead they have in the desktop market still huge, and now they are expanding to the ARM processors to keep / expand their lead. And looks like it will a long time until we see something making a difference in the desktop market.
On the article, I noticed that the issue Apple has is to give options to users. For example, HP has four models of desktop workstations, starting as small as the Z2 Mini (it's as small as a Mac Mini), one with a single CPU and two with dual CPU. They made sure entry-level and high end users were covered. That's something Apple is missing. Personally I think the current MacPro is an excellent option for many users, but not all of them. They should had add the MacPro to their workstation line, and not replaced the "grater cheese" model, as they did.