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The-Bloke

macrumors newbie
Feb 11, 2018
26
21
Brighton, UK
New Beta today... any news of 6700 XT support?
The beta released yesterday was 11.3.1, which won't include any 6000-series drivers. The next beta that will interest us will be 11.4 beta 2.

I would be surprised if 6700 support was added in 11.4, though. Given that "6800, 6800XT and 6900XT support" was the stated feature of 11.4, and that subsequent betas in any given version normally only contain bugfixes, not new features, I'd think it far more likely that 6700XT support - if it comes - would be added in a beta 1 of a future version.
 
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Dae

macrumors regular
Apr 30, 2009
146
13
Anyone able to try the usb-c port with the pro xdr display on the reference 6800xt/6900xt?

Please check my post:
 

diamond.g

macrumors G4
Mar 20, 2007
11,438
2,664
OBX
LuxMark works under macOS. I know OpenCL is being deprecated in macOS, but the benchmark gives us an idea of compute performance compared to other GPUs.
Right. Mine is in a Windows system so I can’t help from the MacOS standpoint, but if you assume the OS doesn’t impact the OpenCL score it will probably be meh just like on Windows.
EDIT: for reference...

luxmark_meh.PNG
 
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mikas

macrumors 6502a
Sep 14, 2017
898
648
Finland
Could You please run LuxMark ver 3.1 LuxBall Scene (with 6900XT alone again)?
(you seem to have run a LuxMark v4 alpha version).
 
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diamond.g

macrumors G4
Mar 20, 2007
11,438
2,664
OBX
What isn't 100% clear to me is if luxmark v3.1 uses the ray accelerators or not.


Edit: it doesn't, as a matter of fact neither does luxmark v4. LuxCoreRender v2.5 would have to be used, and even then it only support Optix hardware acceleration. Not sure if they will bother to add RadeonRays support.
 
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mikas

macrumors 6502a
Sep 14, 2017
898
648
Finland
Thanks.
It's a couple or a few thousands better than a VII. I expected more though, just like others above.
Would it be the memory architecture of the VII makes a difference with LuxMark? Because otherwise it (6900XT) should be almost double the card comparing to VII.
6900XT
1620214236401.png
 
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diamond.g

macrumors G4
Mar 20, 2007
11,438
2,664
OBX
Thanks.
It's a couple or a few thousands better than a VII. I expected more though, just like others above.
Would it be the memory architecture of the VII makes a difference with LuxMark? Because otherwise it (6900XT) should be almost double the card comparing to VII.
6900XT
View attachment 1770049
I think it is the OpenCL driver (sorta) if you look at the CU count it only shows 40. I bet the VII shows 60 CU’s. With RDNA AMD changed over to WGP (2 CU per) which is what is getting reflected.
Also Techpowerup is showing rasterization performance difference, which is improved over prior generations at the expense of compute performance. It is literally why AMD is coming out with CDNA (one day, lol).
 

MisterAndrew

macrumors 68030
Sep 15, 2015
2,895
2,390
Portland, Ore.
That's interesting, but I guess that's not surprising since it's a gaming focused GPU. It looks like Vega is still the compute king from AMD, and old Tahiti isn't far behind. Double precision performance of the D700 is almost as good as the Vega II.
 
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rondocap

macrumors 6502a
Jun 18, 2011
542
341
What do you guys think the future landscape for MPX Module releases will look like?

Maybe a w6800x and 6900x? By the end of the year?

I'm sure they'd likely remove the 580x, and keep the w5500x and possibly w5700x as lower options.

I am curious what a w6900x would do compared to a Vega ii and Vega ii duo - obviously the older GPUs are still powerful and more "compute" focused, but there's no denying that for many workflows it seems like the W6900x would be an absolute home run from the numbers we've seen so far - even for things like video editing.

Heck, even the W5700x already puts up very close numbers to the Pro Vega ii in some cases - so I am curious if they'll keep those around or replace them.

Could easily see a W6900x going for at least 2500-3000, though - with current GPU prices it's not far off the windows PC equivalent, and the performance may justify it if it's significantly more than the Vega ii.
 

bsbeamer

macrumors 601
Sep 19, 2012
4,313
2,713
I'm sure they'd likely remove the 580x, and keep the w5500x and possibly w5700x as lower options.

RX 580 models were discontinued at one point, but were brought back in limited markets due to chip shortage and the pandemic. Was mentioned awhile ago that Apple had plans to stop offering the 580X GPU last year, but assume they still have unsold stock on hand, or their production contracts are still being fulfilled, or the pandemic just made them chug along as-is.

Either way, the 580X was not an attractive GPU option to offer in early 2020 shortly after the machine was more broadly available, but it did work well with the drivers available. FWIW, people still report issues with 5XXX series in macOS.
 

deconstruct60

macrumors G5
Mar 10, 2009
12,493
4,053
RX 580 models were discontinued at one point, but were brought back in limited markets due to chip shortage and the pandemic. Was mentioned awhile ago that Apple had plans to stop offering the 580X GPU last year, but assume they still have unsold stock on hand, or their production contracts are still being fulfilled, or the pandemic just made them chug along as-is.

580X has the fab process availability upside of still being on GlobalFoundaries ( 14nm or 12nm ) process. When TSMC is log jammed can get they without playing a game of "rob Peter to pay Paul" with other Apple/AMD 7nm product they need.

The W5500X doesn't drive the same number of DP streams into the Mac Pro as the 580X.

I suspect Apple may be more interested in retiring the Vega II variants more so than the 580X. if the full sized Mac Pro isn't going to get replaced in 2021 ( i.e., more like June 20222 ) , then they'll probably just wait (if the supply from GF holds up that long. Not like GF is rushing off to 7nm though. ). the "half sized" Mac Pro might drop it though ( just 5000 and possibily 6000 series. )
 

deconstruct60

macrumors G5
Mar 10, 2009
12,493
4,053
What do you guys think the future landscape for MPX Module releases will look like?

Maybe a w6800x and 6900x? By the end of the year?


Closer to end of the year? possible.



Once AMD does a "workstation" 6800 (and/or 6900) variant then an Apple 'workstation' variant is probably not that too far behind. Vega II has 32GB of HBM. This is 32GB of DDR6 which is probably a 'fair trade' , and wouldn't change 'RAM working space" pressure for large footprint jobs.

If Apple does some "half sizesd" Mac Pro late in the year then a decent chance they'll be coupled to some MPX updates that could "trickle down" to the full sized Mac Pro. ( if they run both at same time). [ Fit the half sized model into the iMac Pro pricing space. Half sized Mac Pro and top end iMac 27-32 inch shared. SoC implementation. Performance wise the 'regular' 27" iMac could take the iMac Pro slot and price wise there would be a "hole". ]. the "half sized" Mac Pro's SoC would probably have a iGPU that could rival the 5500 so the standard minimal base config just wouldn't have any MPX module. ( That cheapest possible GPU can get away with role would be a replacement for the 580X. AMD is probably going to have a tougher time trying to fill that half-wdith MPX module solution role even if Apple opens up the driver path. )



Timing additionally is likely someone dependent on if Apple is putting 3rd party GPU support into macOS 12 . If not, then the Mac Pro replacement ( either partial or complete ) probably is sliding into 2022. And the MPX module updates probably right along with them. Without a M-series "pull" to get the newer MPX modules done, IMHO it is doubtful getting new MPX modules out is a "front burner", priority project at Apple. Apple can fill the time gap just by working with AMD to do drivers for "regular" 6800-6900 cards which should work just fine in Mac Pro 2019 systems. ( especially for folks with non XDR displays and/or just need them as "compute" cards. ).



I'm sure they'd likely remove the 580x, and keep the w5500x and possibly w5700x as lower options.

The W5770X isn't an option as a replacement because it is a full width MPX module. The replacement has to be a half width. ( so have an extra slot to use for other stuff). The W5500X has a newer foundation but doesn't drive as many DP streams.

If the introduction is late enough in the year , then a slippery slope they would keep the W5700X option since the RDNA2 (Navi2 ) replacement in workstation class could be out then also. ( W6700). [ Although the 6700XT has been more than scarce. ]


Could easily see a W6900x going for at least 2500-3000, though - with current GPU prices it's not far off the windows PC equivalent, and the performance may justify it if it's significantly more than the Vega ii.

if Apple cranks up the VRAM and puts it in a MPX module it is unlikely to cost less than the Vega Ii did. ( even more so if the crypto mining mania continues. ). Conceptually should be saving on swapping HBM for DDDR6 but if streety prices for the "consumer" cards remains inflated I don't see Apple skipping on taking the profit. Especially if relatively low volume.
 

thexash

macrumors member
Jan 19, 2020
60
29
If the drivers are in 11.4 I would imagine the MPX module is not far behind. Why would Apple bother writing drivers only to support hackintosh's and 3rd party gpu in external enclosures and Mac Pros.

It seems to me Apple always do things when they have a product to show for it, so if the software for a 6800/6900 gpu is getting ready some hardware has to be pushing its development.

End of this year seems quite pessimistic, I'd guess (and hope) more around June/July near WWDC.

I can buy a 6900XT now but I would much rather have a MPX module to replace my 580X...
 
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