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Madpressure

macrumors newbie
Apr 7, 2019
2
2
France
Hy all ! You can also list the 8800gts 320mb (double slot) it's working perfectly in my 2,1 with elcapitan 10.11.6 (works OOTB with 10.8 to 10.11.6 don't think it's working after el capitan)
No boot screen but better card than a 7300gt
Outs: two DL-DVI.
Power consumption: 6 pins.
Unflashed (PC version): works out of the box with elcapitan
no boot screen !
 

startergo

macrumors 601
Sep 20, 2018
4,792
2,193
That 8A is display limit. Your card most likely drawing more 100W at that moment.

The difference between A and B should be erroneous. If you install the card in slot 2, that difference should disappear.

For stress test, should not use window mode. But use Full screen mode, native (or even higher) resolution, no AA.
[doublepost=1554630938][/doublepost]

Kepler has Rev B card which was not natively supported in OSX. But Apple fixes that few years back, all Kepler GPU should be supported natively in MacOS.
How can it be display limit? I am not measuring with software but with hardwire My Fluke meter and clamp measure correctly. The istat measures 0 amps on my Boost A so it is completely erroneous.
 
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h9826790

macrumors P6
Apr 3, 2014
16,614
8,546
Hong Kong
How can it be display limit? I am not measuring with software but with hardwire My Fluke meter and clamp measure correctly. The istat measures 0 amps on my Boost A so it is completely erroneous.

I thought you mean iStat reading is 8A. That coincidentally match the cMP SMC display limit of the booster A or B.
 
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startergo

macrumors 601
Sep 20, 2018
4,792
2,193
I thought you mean iStat reading is 8A. That coincidentally match the cMP SMC display limit of the booster A or B.
Actually, that value only triggered during the start of the stress test. Then when I minimized the screen and subsequently clicked on the taskbar where the program resided the cMP's protection kicked on, but the current value did not increase over the previously captured highest value. I may retest it with B boost only to compare. Not sure though why Boost A supplies less amperage than B in dual mode. The cable splitter is made from the same AWG cables so their impedance should be equal. Apparently, the internal circuits have different impedance.
[doublepost=1554643186][/doublepost]Is there a software for displaying the power draw from both boost connectors in Windows?
 
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h9826790

macrumors P6
Apr 3, 2014
16,614
8,546
Hong Kong
Actually, that value only triggered during the start of the stress test. Then when I minimized the screen and subsequently clicked on the taskbar where the program resided the cMP's protection kicked on, but the current value did not increase over the previously captured highest value. I may retest it with B boost only to compare. Not sure though why Boost A supplies less amperage than B in dual mode. The cable splitter is made from the same AWG cables so their impedance should be equal. Apparently, the internal circuits have different impedance.
[doublepost=1554643186][/doublepost]Is there a software for displaying the power draw from both boost connectors in Windows?

From my observation, it seems the SMC erroneously count some power draw from slot 1 as the power draw from Booster B.

I am quite sure even you swap the mini 6pin connectors, you will still has same result (which means the “uneven” power distribution is not due to cable manufacturing flaw).

And if you install the card in slot 2, the uneven will pretty much gone.

AFAIK, no software in Windows can provide that power draw value.
[doublepost=1554651348][/doublepost]
Good to know. I am still confused as to why he would recently list it as requiring drivers and not supported though.

May be MVC's flashed card behave a little bit different.
 
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TeamSPAM

macrumors newbie
Apr 6, 2019
2
2
RX 460 support Metal 2 on Mojave?
Without flashing to RX 5xx?

Maybe it is Metal 1. When I looked for Metal in the System Profiler I saw: "Supported, feature set macOS GPUFamily2 v1". I bought the card off of Ebay, seller claimed “New sealed OEM”. They had no idea I was gonna put it into a mac so safe to assume not flashed.
 

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barmann

macrumors 6502a
Oct 25, 2010
941
626
Germany
Thanks very much for that list .

I just think OSX compatibility should be there as well .
Some of us ( ahem ;) ) don't run the latest OSX, and it's a real pain to find that information , as most current discussions assume one is on the latest HS and Mojave versions .

Here is one possible source .
 
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Pentaxer

macrumors regular
Original poster
Oct 25, 2018
107
89
Russia
Interesting video.

The description made by the author: "Ok so during our discussion yesterday about gpu power I made this little test to show 1 mini 6 pin pulling 116-117w, and I ran furmark for nearly 24hrs..."
 

MIKX

macrumors 68000
Dec 16, 2004
1,815
691
Japan
Interesting video.

The description made by the author: "Ok so during our discussion yesterday about gpu power I made this little test to show 1 mini 6 pin pulling 116-117w, and I ran furmark for nearly 24hrs..."

I commend Brennan (author ) , a convincing, well thought out & presented video.
Seems we may have to revise our GPU powering thinking.
Makes me more glad that I use an EVGA PowerLink.
 
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Alex Sanders74

macrumors 6502
Nov 26, 2013
278
65
Toronto, Canada
Running a GTX970... Working flawlessly with the web drivers and High Sierra, PC version not flashed....

Nvidia Geforce GTX 970 4 GB
Performance:
Metal Compatibility: Supported, feature set macOS GPUFamily1 v4.
OS Compatibility: 10.10.5 - 10.13.6
Power consumption: 6 pins + 6 pin
Outs: Dual Link DVI-I, HDMI 2.0, 3x DisplayPort 1.2
Other: can be flashed only by MVC, occupies 2 slots (standard). There was no "original" mac version card.
Unflashed (PC version): works without Boot Screen; can be flashed only by MVC
 
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ActionableMango

macrumors G3
Sep 21, 2010
9,612
6,907
I tried to make a post like this a couple of years ago, but I gave up because frankly it was too hard. So @Pentaxer, I have a fairly good idea how much work this was! Kudos to you.

This should be a sticky.

My small contribution:
  • Added OS compatibility to GTX 980 entry
  • Added OS compatibility to GTX 680 2GB and 4GB entries
  • For GTX 680 entries, added links to flashing instructions
 

Pentaxer

macrumors regular
Original poster
Oct 25, 2018
107
89
Russia
Have just ended several tests.
The news:

1. Vega 56 can’t normally work with dual mini6->8 cables. The system shutdown on a high GPU load. The test was made using overclocked Vega 56.

2. Several Chinese 2xmini6->8 cables/adapters can’t use all the power from cMP motherboard. Two mini6 sockets on motherboard have SIX +12V lines, but these cables/adapters don’t use them all!!! I have found the cables that use 3 or 4 lines. So, 3 or 2 additional lines are not used at all :)
 

startergo

macrumors 601
Sep 20, 2018
4,792
2,193
GT 640 p/n 02G-P4-2645-KR.
Perfect replacement for GT-120. Full Mojave support:
Code:
NVIDIA GeForce GT 640:

  Chipset Model:   NVIDIA GeForce GT 640
  Type:   GPU
  Bus:   PCIe
  Slot:   Slot-2
  PCIe Lane Width:   x16
  VRAM (Total):   2 GB
  Vendor:   NVIDIA (0x10de)
  Device ID:   0x0fc0
  Revision ID:   0x00a2
  ROM Revision:   MacVidCards
  Metal:   Supported, feature set macOS GPUFamily1 v4
  Displays:
SyncMaster:
  Resolution:   1280 x 1024 (SXGA - Super eXtended Graphics Array)
  UI Looks like:   1280 x 1024 @ 60 Hz
  Framebuffer Depth:   24-Bit Color (ARGB8888)
  Display Serial Number:  
  Main Display:   Yes
  Mirror:   Off
  Online:   Yes
  Rotation:   Supported
  Automatically Adjust Brightness:   No

NVIDIA GeForce GT 640:

  Name:    NVDA,Display-D
  Type:    Display Controller
  Driver Installed:    Yes
  MSI:    Yes
  Bus:    PCI
  Slot:    Slot-2
  Vendor ID:    0x10de
  Device ID:    0x0fc0
  Subsystem Vendor ID:    0x3842
  Subsystem ID:    0x0010
  ROM Revision:    MacVidCards
  Revision ID:    0x00a2
  Link Width:    x16
  Link Speed:    2.5 GT/s
Name:    pci10de,e1b
  Type:    NVDA,Parent
  Driver Installed:    No
  MSI:    No
  Bus:    PCI
  Slot:    Slot-2
  Vendor ID:    0x10de
  Device ID:    0x0e1b
  Subsystem Vendor ID:    0x3842
  Subsystem ID:    0x2643
  ROM Revision:    MacVidCards
  Revision ID:    0x00a1
  Link Width:    x16
  Link Speed:    2.5 GT/s
I have 2 of these one with MacVidCards bootrom (EFI) and one with the original NVIDIA. Both work in Mojave only one has a boot screen. It requires no external power and it is a single slot GPU.


DELL OEM Radeon RX580 (appears as RX480 in MAC but RX580 in Windows):
I also was able to assign Orinoco framebuffer, but it interfered with Windows and I flashed back the original bios. True 2 slot size card. 6 pin connector (dual mini 6 pin to 6 pin recommended)

Code:
Radeon RX 480:

  Chipset Model:   Radeon RX 480
  Type:   GPU
  Bus:   PCIe
  Slot:   Slot-1
  PCIe Lane Width:   x16
  VRAM (Total):   8 GB
  Vendor:   AMD (0x1002)
  Device ID:   0x67df
  Revision ID:   0x00c7
  Metal:   Supported, feature set macOS GPUFamily2 v1

Radeon RX 480:

  Name:    ATY,AMD,RadeonFramebuffer
  Type:    Display Controller
  Driver Installed:    Yes
  MSI:    Yes
  Bus:    PCI
  Slot:    Slot-1
  Vendor ID:    0x1002
  Device ID:    0x67df
  Subsystem Vendor ID:    0x1028
  Subsystem ID:    0x1701
  Revision ID:    0x00c7
  Link Width:    x16
  Link Speed:    5.0 GT/s

pci1002,aaf0:

  Type:    Audio Device
  Driver Installed:    Yes
  MSI:    Yes
  Bus:    PCI
  Slot:    Slot-1
  Vendor ID:    0x1002
  Device ID:    0xaaf0
  Subsystem Vendor ID:    0x1028
  Subsystem ID:    0xaaf0
  Revision ID:    0x0000
  Link Width:    x16
  Link Speed:    5.0 GT/s
 
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