The comment may have been intended to point out that the current 15" rMBP is still running Haswell...? Of course the Mac Pro is still running IVB-E so...
Some of the past system cutoffs were easy enough to figure out - 32 bit GPUs gone, 32 bit UEFIs gone, but these are sometimes weird. I.e what does a 2009 Macbook do better than a 2009 Mac Pro?
Wish they gave some reasoning for each cutoff. Windows 10 still works nicely on a Core Duo (not even 2, remember Yonah?) laptop we have kicking around, and it ran on an Athlon XP desktop before I scrapped that.
Imo neither company has the middle point I'd want between moving forward with new processor instructions and such, and supporting still usable hardware like a 2009 Mac Pro on an SSD.
They did require a 64 bit capable UEFI and processor earlier, but Macs can still run 64 bit programs even if the OS boots in 32 bit mode. An ability Windows lacks.
However, just like Windows, if you're going to use the 64 bit version of the kernel, you need everything to have 64 bit drivers.
I don't know that this is the answer to the random seeming cutoff date, but if they are ditching 32 bit mode for the kernel, 64 bit driver availability across the board would at least make sense.
Nope, the everything 64 bit transition was several versions ago (started with 10.7, and finished with 10.8).
This new cutoff appears to be 1, the OS now requires SSE4.1 instructions (basically Penryn core 2 duos or later), plus some older penryn-era macs are cut off, presumably because their GPUs are not up to snuff.
Nobody's exactly sure what Apple's criteria are, for excluding some SSE4.1 macs and not others. my comment about GPUs was a guess. Another, possibly better guess is that it's based on excluding those Macs that did not come with wifi by default.
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johnnycanadian - Thursday, July 7, 2016 - link
Oh yay. A 2016 operating system that runs on 2014 hardware.JoeMonco - Thursday, July 7, 2016 - link
And 2009 and 2010 and higher hardware.MrCommunistGen - Thursday, July 7, 2016 - link
The comment may have been intended to point out that the current 15" rMBP is still running Haswell...? Of course the Mac Pro is still running IVB-E so...ScorpionRaY - Thursday, July 7, 2016 - link
Much better than "A 2016 operating system that WON'T run on 2014 hardware."tipoo - Thursday, July 7, 2016 - link
Some of the past system cutoffs were easy enough to figure out - 32 bit GPUs gone, 32 bit UEFIs gone, but these are sometimes weird. I.e what does a 2009 Macbook do better than a 2009 Mac Pro?Wish they gave some reasoning for each cutoff. Windows 10 still works nicely on a Core Duo (not even 2, remember Yonah?) laptop we have kicking around, and it ran on an Athlon XP desktop before I scrapped that.
Imo neither company has the middle point I'd want between moving forward with new processor instructions and such, and supporting still usable hardware like a 2009 Mac Pro on an SSD.
BillBear - Thursday, July 7, 2016 - link
I'm guessing the cutoff this time is based on the availability of 64 bit drivers for all the hardware. Otherwise it's just too damn random.tipoo - Thursday, July 7, 2016 - link
I thought they already did that at the same time as whichever came second between the 32 bit GPUs and 32 bit UEFIBillBear - Thursday, July 7, 2016 - link
They did require a 64 bit capable UEFI and processor earlier, but Macs can still run 64 bit programs even if the OS boots in 32 bit mode. An ability Windows lacks.However, just like Windows, if you're going to use the 64 bit version of the kernel, you need everything to have 64 bit drivers.
I don't know that this is the answer to the random seeming cutoff date, but if they are ditching 32 bit mode for the kernel, 64 bit driver availability across the board would at least make sense.
Glaurung - Thursday, July 7, 2016 - link
Nope, the everything 64 bit transition was several versions ago (started with 10.7, and finished with 10.8).This new cutoff appears to be 1, the OS now requires SSE4.1 instructions (basically Penryn core 2 duos or later), plus some older penryn-era macs are cut off, presumably because their GPUs are not up to snuff.
tipoo - Thursday, July 7, 2016 - link
Sucks for people who got a Mac Pro and then upgraded the GPU beyond the includedDPUser - Thursday, July 7, 2016 - link
Folks at MacRumors are running 4,1 Mac Pros... update EFI to 5,1:http://forums.macrumors.com/threads/how-macos-sier...
DPUser - Thursday, July 7, 2016 - link
3,1's too.Glaurung - Friday, July 8, 2016 - link
Nobody's exactly sure what Apple's criteria are, for excluding some SSE4.1 macs and not others. my comment about GPUs was a guess. Another, possibly better guess is that it's based on excluding those Macs that did not come with wifi by default.Oxford Guy - Friday, July 8, 2016 - link
Random? Not really. Apple likes planned obsolescence and the cost reduction of providing so little legacy support.