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mattspace

macrumors 68040
Jun 5, 2013
3,344
2,975
Australia
You can do that on any display as long as the GPU support. It’s not the native resolution, but you can manually set that.

So it's the opposite of retina - every virtual pixel gets less than a single physical pixel...

I'm curious as to whether the update has killed 10 bit / 60Hz universally, or if it's just an edge case for Éric 69.
 

Éric 69

macrumors member
Mar 24, 2018
50
12
France
So if you plug the display in directly, aside from the issues, do the 60Hz options and 4:4:4 colour come back? I'd still like to know why your display reports as 8k physical resolution, when it's a 4k panel.

If I plug the display directly (DisplayPort without adapter) , yes I have 60 Hz but not 4:4:4: chroma only 4:2:2 .

On my 43" LG you have to enable "Ultra Deep Color " on the monitor to have 4:4:4 chroma.

But ,4:4:4 chroma is only available via the HDMI input of the monitor.

On 10.13.6 if I enable "Ultra Deep Color " the screen is scrambled while on 10.13.5 it works very well.

Via the DisplayPort of my RX 580 to DisplayPort of the monitor max resolution I can have is 4k @60Hz 4:2:2.
 

mattspace

macrumors 68040
Jun 5, 2013
3,344
2,975
Australia
If I plug the display directly (DisplayPort without adapter) , yes I have 60 Hz but not 4:4:4: chroma only 4:2:2 .

On my 43" LG you have to enable "Ultra Deep Color " on the monitor to have 4:4:4 chroma.

But ,4:4:4 chroma is only available via the HDMI input of the monitor.

On 10.13.6 if I enable "Ultra Deep Color " the screen is scrambled while on 10.13.5 it works very well.

Via the DisplayPort of my RX 580 to DisplayPort of the monitor max resolution I can have is 4k @60Hz 4:2:2.

So I guess what I'm interested in, is can a 10 bit / 4:4:4 monitor get 4k60Hz over any connector on the RX580 with the latest update, or is it just that your particular combination of port / adapter / display causing problems?

Also, which RX580 are you using?
 

Éric 69

macrumors member
Mar 24, 2018
50
12
France
So I guess what I'm interested in, is can a 10 bit / 4:4:4 monitor get 4k60Hz over any connector on the RX580 with the latest update, or is it just that your particular combination of port / adapter / display causing problems?

Also, which RX580 are you using?

Ok ,I just got confirmation from my seller active adapters (such as mine) that bypass DisplayPort limitations can not do it anymore through the new update 10.13.6.

With the latest update you can have 10 bit / 4:4:4 monitor @ 4k60Hz only via one of the two DisplayPort assuming your monitor is compatible.
Keep in mind that some monitors as mine LG 43UD79-B must enable "Ultra Deep Color " to have 4:4:4 but since the new update it's no longer available .

I use a "Sapphire AMD Radeon RX 580 8 Go"

PS: another point to consider it is not certain that in the future the RX580 will be natively supported by the OS ,some RX who were natively supported are no longer officially supported (no drivers).
 
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mattspace

macrumors 68040
Jun 5, 2013
3,344
2,975
Australia
Ok ,I just got confirmation from my seller active adapters (such as mine) that bypass DisplayPort limitations can not do it anymore through the new update 10.13.6.

Unless that's an anti-circumvention thing for HDCP, I would assume that's a bug.

Keep in mind that some monitors as mine LG 43UD79-B must enable "Ultra Deep Color " to have 4:4:4 but since the new update it's no longer available .

Is that something you enable on the monitor, or on the Mac?

PS: another point to consider it is not certain that in the future the RX580 will be natively supported by the OS ,some RX who were natively supported are no longer officially supported (no drivers).

All the more reason to use the card Apple actually suggest - the Sapphire Pulse.
 

h9826790

macrumors P6
Apr 3, 2014
16,656
8,587
Hong Kong
So it's the opposite of retina - every virtual pixel gets less than a single physical pixel...

I'm curious as to whether the update has killed 10 bit / 60Hz universally, or if it's just an edge case for Éric 69.

10 bit is fine. Since I can render my desktop at 7680 x 2160 @144Hz, bandwidth is not an issue for 7680 x 4320 @ 60Hz as well.
Screen Shot 2018-07-12 at 15.59.32.png


That issue sounds like cause by the compatibility of the HDMI 2.0 active adaptor.
 

foen

macrumors member
Sep 22, 2017
34
2
Italy
Hi guys, could you suggest me a basic upgrade for my GT 120 ? Best and cheapest solution OTB?

Peace
 

Squuiid

macrumors 68000
Oct 31, 2006
1,877
1,713
Hi guys, could you suggest me a basic upgrade for my GT 120 ? Best and cheapest solution OTB?
Peace
The Sapphire RX 580 Pulse 8GB is by no means the cheapest but it is the upgrade that Apple now recommend for the cMP, so I would try and save up for it rather than go with something not sanctioned by Apple. It isn't worth the trouble of getting anything else IMO, another card may work fine one day and then just stop being supported by macOS the next.
If bugs with the macOS drivers are ever to be fixed you can bet that they'll be done for the RX 580 and very little else at this stage.

Slightly cheaper is an eVGA GTX 680 which you can flash to have EFI boot screens however it's a bit underpowered compared to the RX 580 and won't decode HEVC (H.265) either.

They are both suitable for the upcoming macOS 10.14 Mojave.
 
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Éric 69

macrumors member
Mar 24, 2018
50
12
France
Is that something you enable on the monitor, or on the Mac?

On the monitor.
[doublepost=1531391987][/doublepost]
Hi guys, could you suggest me a basic upgrade for my GT 120 ? Best and cheapest solution OTB?

Peace

Best solution is to switch on Pc as I will do because I'm fed up with Apple's policy ,clearly they take us for fools.

PS: in 2048 Apple plans to update Safari to be able to watch youtube's video in 4K @ 60Hz.

They also plan in two or three centuries (maybe more) to enable audio via HDMI.

...etc...
 
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bookemdano

macrumors 68000
Jul 29, 2011
1,514
846
The Sapphire RX 580 Pulse 8GB is by no means the cheapest but it is the upgrade that Apple now recommend for the cMP, so I would try and save up for it rather than go with something not sanctioned by Apple. It isn't worth the trouble of getting anything else IMO, another card may work fine one day and then just stop being supported by macOS the next.
If bugs with the macOS drivers are ever to be fixed you can bet that they'll be done for the RX 580 and very little else at this stage.

Slightly cheaper is an eVGA GTX 680 which you can flash to have EFI boot screens however it's a bit underpowered compared to the RX 580 and won't decode HEVC (H.265) either.

They are both suitable for the upcoming macOS 10.14 Mojave.
Well, Apple actually recommended two cards. The Sapphire Radeon Pulse RX 580 and the MSI Gaming Radeon RX 560. The 560 is quite a bit cheaper than the 580 (like half the price). Here's a link to it on Amazon: https://www.amazon.com/MSI-RX-560-AERO-ITX/dp/B072J422CZ

Since he was asking for a "basic upgrade" I think the 560 is the more comparable recommendation. Like the GT120 he has now, it will not require any additional power cables (it is completely powered by the slot). Unlike the GT120 it takes up two slots, but that's not that big of a deal if placed in Slot 1 (the lowest one) as then it won't block any additional slots.

Because the MSI and Sapphire cards are on Apple's recommended list, maybe Apple will come up with some solution to let them show the boot screen. But also maybe they won't. So whatever you end up buying, hold onto that GT120.
 

mindcomputing

macrumors newbie
Nov 25, 2013
5
0
PowerColor Radeon RX 580 Red Dragon V2, 8GB GDDR5, DVI, HDMI, 3x DP (AXRX 580 8GBD5-3DHDV2/OC)

I could get this graphics card for 200 EUR incl tax in germany

does it need flashing to work with or anything with the OS. Running HS on the cMP5,1 right now with a R9 270X
 

tsialex

Contributor
Jun 13, 2016
13,455
13,601
PowerColor Radeon RX 580 Red Dragon V2, 8GB GDDR5, DVI, HDMI, 3x DP (AXRX 580 8GBD5-3DHDV2/OC)

I could get this graphics card for 200 EUR incl tax in germany

does it need flashing to work with or anything with the OS. Running HS on the cMP5,1 right now with a R9 270X
The most recent card that you can flash the Mac EFI is R9-280. No AMD card after that can be flashed to get boot screens/boot picker/FileVault support.

RX 580 is an Apple suggested card and you have native OS driver support, but no boot screens/boot picker/FileVault support.
 
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I know I forgot about this thread for a while, but I also didn't use the Mac Pro directly much for a while. (It does a lot of file serving to other devices)

Someone mentioned "4K boot screen". Just to clarify, I don't actually need the boot screen in any particular resolution. I just need some kind of boot screen. I have every hard drive bay filled... and my boot drive is partitioned. Holding option shows way too many drives (but most of them aren't boot drives, makes it more frustrating).

Furthermore, the graphical glitches are getting worse on the 5770. They get worse the longer I use the computer (card is heating up?)

Some years ago I used the card to do a lot of bitcoin mining, back when you could actually do such a thing and earn an amount of money greater than zero. This entailed a lot of time booted into Windows XP, with the GPU overclocked a bit. I think the card is now paying me back for that torture: 4K is stressing it enough to cause these transient glitches.

I'm not doing video editing work or anything like that. I just like "the big iron" and the fact that with the right upgrade I know I can run this Mac Pro for another 5 years at least. The only thing that really took down my G5 was removal of PowerPC support from software (and the fact that my old MacBook Air was faster), and I expect the only thing that will take down my Mac Pro will be something similarly significant.

So I'm still confused as to which card to get, but I have to get one soon, it looks like.

The 4K monitor is huge and there's basically no room on my desk for a second monitor. I have a nice 20" Cinema Display going unused right now.

The start up procedure sucks so hard though, I'm afraid to reboot the computer now or shut it down or anything. I have to have a better startup procedure.
 

tsialex

Contributor
Jun 13, 2016
13,455
13,601
I know I forgot about this thread for a while, but I also didn't use the Mac Pro directly much for a while. (It does a lot of file serving to other devices)

Someone mentioned "4K boot screen". Just to clarify, I don't actually need the boot screen in any particular resolution. I just need some kind of boot screen. I have every hard drive bay filled... and my boot drive is partitioned. Holding option shows way too many drives (but most of them aren't boot drives, makes it more frustrating).

Furthermore, the graphical glitches are getting worse on the 5770. They get worse the longer I use the computer (card is heating up?)

Some years ago I used the card to do a lot of bitcoin mining, back when you could actually do such a thing and earn an amount of money greater than zero. This entailed a lot of time booted into Windows XP, with the GPU overclocked a bit. I think the card is now paying me back for that torture: 4K is stressing it enough to cause these transient glitches.

I'm not doing video editing work or anything like that. I just like "the big iron" and the fact that with the right upgrade I know I can run this Mac Pro for another 5 years at least. The only thing that really took down my G5 was removal of PowerPC support from software (and the fact that my old MacBook Air was faster), and I expect the only thing that will take down my Mac Pro will be something similarly significant.

So I'm still confused as to which card to get, but I have to get one soon, it looks like.

The 4K monitor is huge and there's basically no room on my desk for a second monitor. I have a nice 20" Cinema Display going unused right now.

The start up procedure sucks so hard though, I'm afraid to reboot the computer now or shut it down or anything. I have to have a better startup procedure.
Even if you buy a Mac EFI GPU, no one shows boot screens with DP1.2. It's a firmware problem that Apple resolved with MP6,1 and "forgot" with 5,1.
 
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saulinpa

macrumors 65816
Jun 15, 2008
1,269
777
Even if you buy a Mac EFI GPU, no one shows boot screens with DP1.2. It's a firmware problem that Apple resolved with MP6,1 and "forgot" with 5,1.
MacVidCards had a blog post saying their EFI v2 will be supporting 4k boot screens using DP 1.3/1.4. So would that be for the MP6,1 only?
 

tsialex

Contributor
Jun 13, 2016
13,455
13,601
MacVidCards had a blog post saying their EFI v2 will be supporting 4k boot screens using DP 1.3/1.4. So would that be for the MP6,1 only?
I really hope he can someway achieve this with a MP5,1, but I’m doubtful.
 

Selsk

macrumors member
Mar 18, 2017
98
39
I put a GTX 1080 in a 4,1 that was flashed to a 5,1. No problems except you need a stock card to install the Nvidia drivers. Black screen otherwise with the 1080 at first.
 
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tsialex

Contributor
Jun 13, 2016
13,455
13,601
His Mac EFI can display 4k boot screen since Maxwell cards. It’s totally possible to give those old Nvidia cards that has DP1.2 port with 4k boot screen ability.
4K 60Hz? Or 4K 30Hz? I know that the second is possible.

Edit: second, not first.
 
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tsialex

Contributor
Jun 13, 2016
13,455
13,601
thanks a lot for quick answer. Need a good gpu thath uses no more that 150W in maximum performance. what do you think?
Nothing on the market today will give you 150W and Mojave support. Only thing that works around 150W with decent performance is an AMD RX 580 sold by Dell that have only a 6-Pin PCIe connector.
 
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