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ArPe

macrumors 65816
May 31, 2020
1,281
3,325
AMD said the new GPUs are not cert for eGPU so they might have the same sleep and fan problem as VII.
 

bsbeamer

macrumors 601
Sep 19, 2012
4,313
2,713
AMD said the new GPUs are not cert for eGPU so they might have the same sleep and fan problem as VII.

Screen Shot 2021-03-19 at 4.17.40 PM.png
The 6800/6900 are already on Sonnet's eGPU list for Windows, so was this statement meant for Apple/macOS only?
 

0279317

Cancelled
Jan 2, 2020
113
100
You should be calling the vendor of the GPU, not AMD. Every AMD GPU is different. For instance, a Gigabyte 5700 XT Gaming OC requires 600w PSU (total system draw) and uses 8+6 pin PCI cables and on average draws 187 watts. The Sapphire 5700 XT Nitro+ draws up to 413w in 1ms spikes but despite that Sapphire claims it uses up to 265 watts and recommends a 650 watt PSU (total system draw). The 5700 GPUs are known to have 'high transient' (huge sudden spikes and drops in power consumption).

I don't know about the 6000 series GPUs but I really hope AMD fixed the spikes. They are more power efficient though.
You are correct and I appreciate your precision but my Razer Core X Chroma will easily cover the power requirements for the 6800 XT which I covet, so not a big deal. I'm more concerned about the fact that AMD says they will not support the cards for eGPU enclosures. Who will supply the drivers?

Anyway, right now it's impossible to get the 6000 series cards or you have to pay an outrageous amount to get one. My 5700XT will do just fine for now.
 

blazerunner

Suspended
Nov 16, 2020
1,081
3,998
I’m tempted to buy a card and test it out. My local computer store has some cards in stock, and official support from Apple has to come sometime soon.
Uh... wanna buy me a 6700 XT an I'll e-transfer you some money? LOL.... (serious, my 5700 XT is constantly giving black screens).
 

DFP1989

macrumors 6502
Jun 5, 2020
462
361
Melbourne, Australia
Ordered a 6800 XT today, expect it will arrive on Tuesday (thanks to Easter). Will be able to start testing it with the betas then.

Pretty crap it's taking Apple so long to support new cards. A huge part of the benefit of buying the Mac Pro was it's upgradability, if Apple's going to control the drivers so tightly and take forever to release them (if at all), it further throws into question the long-term viability of the platform.

Currently editing a project shot completely in HEVC 4:2:2 10-bit in FCP X 10.5.2 from a TB3 drive on my 16GB M1 Mac Mini, can't believe how good the performance is. H264 outputs are much faster than my MP7,1 too.
 

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vvvvvanilla

macrumors newbie
Mar 23, 2021
3
1
Ordered a 6800 XT today, expect it will arrive on Tuesday (thanks to Easter). Will be able to start testing it with the betas then.

Pretty crap it's taking Apple so long to support new cards. A huge part of the benefit of buying the Mac Pro was it's upgradability, if Apple's going to control the drivers so tightly and take forever to release them (if at all), it further throws into question the long-term viability of the platform.
How much you spend for 6800xt? is 1400USD in here(China)...
 

DFP1989

macrumors 6502
Jun 5, 2020
462
361
Melbourne, Australia
How much you spend for 6800xt? is 1400USD in here(China)...
That's wild, then again what I paid still feels a bit wild. Was AU$1600 for a 6800XT, I found a store with AU$999 6700 XT in stock but I figure might as well go for the better card now. 6900 XT was AU$2500 (for one in stock), that felt like it was pushing the value too far.
 

yosh22

macrumors newbie
Feb 14, 2019
27
16
that apple doesn´t release drivers show us, again, how they don´t give a --- about their users.
We could make it softer and say, how little they care about supporting the "pro" users. We are lacking power to work, since ever.. not their buisness. If only windows was not such a pain.
 

Macschrauber

macrumors 68030
Dec 27, 2015
2,979
1,487
Germany
I put an AMD RX6900XT Reference Model into a customer 5.1 machine.

it even wont post (no chime).

I added an uga GPU and it got to a Firmware loop (loud chime, chime, chime, chime....) in one second rhythm.

I asume a glitch in the RX Bios with Mac Firmware.

Mac Firmware was 144, rebuilt with latest bootloader.

GPU was new in a sealed box.

have no PC to double check the GPU but doubt it is defective.

Mac and GPU is back to the customer.

Did PSU mod for powering the GPU. But also doubt it is current related.


this model
2B098E49-0ABB-4968-A9BD-132A8833921A.png
 
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rx78

macrumors regular
Nov 10, 2020
102
17
I put an AMD RX6900XT into a customer 5.1 machine.

it even wont post (no chime).

I added an uga GPU and it got to a Firmware loop (loud chime, chime, chime, chime....) in one second rhythm.

I asume a glitch in the RX Bios with Mac Firmware.

Mac Firmware was 144, rebuilt with latest bootloader.

GPU was new in a sealed box.

have no PC to double check the GPU but doubt it is defective.

Mac and GPU is back to the customer.

Did PSU mod for powering the GPU. But also doubt it is current related.


this model
View attachment 1752575
That's a real shame.
 

Boil

macrumors 68040
Oct 23, 2018
3,477
3,173
Stargate Command
I put an AMD RX6900XT Reference Model into a customer 5.1 machine.

it even wont post (no chime).

I added an uga GPU and it got to a Firmware loop (loud chime, chime, chime, chime....) in one second rhythm.

I asume a glitch in the RX Bios with Mac Firmware.

Mac Firmware was 144, rebuilt with latest bootloader.

GPU was new in a sealed box.

have no PC to double check the GPU but doubt it is defective.

Mac and GPU is back to the customer.

Did PSU mod for powering the GPU. But also doubt it is current related.


this model
View attachment 1752575

Well, I guess I could take one for the team; send it on over & I will do some testing in my PC...! ;^p
 

Menno87

macrumors member
Jul 18, 2008
78
74
Netherlands, the
Hmm if apple is ever going to release a big navi mpx module it needs a bit more ouphmf. Like a 6900xt equivalent with HBM2. Sadly AMD designed it's next generation compute architecture to be datacenter only (headless).
 

Macschrauber

macrumors 68030
Dec 27, 2015
2,979
1,487
Germany
I guess there is a problem with the 6900 bios interacting with the Mac Pro 5,1 Firmware.

Got no idea if there is a chance to fiddle with the bios, and what version was on the card as it is pointless if I cant change this (as the Mac wont started).

As said, no PC here available.

Someone needs to throw a 6900 in a 7,1...
 
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