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iM 4,1-14,4 2011 iMac Graphics Card Upgrade
- Thread starter MichaelDT
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thinking ill also need to do that for the WX7100. i think about creating a 3D printed part. not realy need the optical.
Hello guys, a little bit OT, my apologies,
I have a specific question about ATI HD5770M 512MB card; I got a FOC iMac 21.5 mid 2011 which had several issues initially, left with one:
* whenever I want to install MacOS High Sierra (installer is ok, tried El Capitan, tried a pre-installed HighSierra, too, which can run on my other 21.5" an 27", also tried internet recovery), it boots half-way (same in verbose mode and safe mode), Logo+progress bar appears, but at some point it switches to a blank white screen. Tried SMC & Pram reset, nothing.
* I can boot into diagnostic mode, shows all ok. Graphics card is shown as HD6770M 512MB, as per serial number (checked; # C02FQ0W0DHJN, EMC# 2428).
* I can boot into Linux Mint with parameter "nomodeset".
Edit: Got a ROM from ZenSurfeur. Thank you for that! However, no change, MacOS HS installer proceeds to about 75% on the progress bar, then white screen.
Apart from that, it's a machine that probably wasn't updated, so that Bootloader or such things are older. Any way to check that - and to update that - without being able to boot MacOS?
I have a specific question about ATI HD5770M 512MB card; I got a FOC iMac 21.5 mid 2011 which had several issues initially, left with one:
* whenever I want to install MacOS High Sierra (installer is ok, tried El Capitan, tried a pre-installed HighSierra, too, which can run on my other 21.5" an 27", also tried internet recovery), it boots half-way (same in verbose mode and safe mode), Logo+progress bar appears, but at some point it switches to a blank white screen. Tried SMC & Pram reset, nothing.
* I can boot into diagnostic mode, shows all ok. Graphics card is shown as HD6770M 512MB, as per serial number (checked; # C02FQ0W0DHJN, EMC# 2428).
* I can boot into Linux Mint with parameter "nomodeset".
Edit: Got a ROM from ZenSurfeur. Thank you for that! However, no change, MacOS HS installer proceeds to about 75% on the progress bar, then white screen.
Apart from that, it's a machine that probably wasn't updated, so that Bootloader or such things are older. Any way to check that - and to update that - without being able to boot MacOS?
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hi
I got the original apple vbios of this card if you want it I can give it to you
you can flash again using linux and ssh
I think your card is dying
Hi again. Couple pages ago I posted about 4th led being off with flashed k2100m which turned out to be faulty. Got it replaced with another one and so far so good.
I have a question about native brightness control support for the remaining Quadro cards. Is the reason for not supporting it the hardware limitations or is it just a matter of Rom improvement? Recently quite many of the listed cards got the brightness native support, so I'm wondering what's the reason behind the others support it only with OC?
I have a question about native brightness control support for the remaining Quadro cards. Is the reason for not supporting it the hardware limitations or is it just a matter of Rom improvement? Recently quite many of the listed cards got the brightness native support, so I'm wondering what's the reason behind the others support it only with OC?
The ROM would need to be modified/re-written to assign the iMac's display as "internal"/eDP, this is basically what OpenCore is doing by loading a small bit of "code" @0,backlight-control, @0,built-in. Otherwise when booting without OpenCore your Display is shown as an Apple Cinema display 1st gen, which ironically controls Backlight over USB.
I have 20yrs of background in IT, however have never been doing such modifications (although have some experience with programming early Motorolas and Intels). It's graphics card ROM more like assembler code or rather data structure?
Where can I find some information/guide how and where to start?
I really only know how to do the ACPI side of things such as DSDT/SSDT/Clover/OpenCore things, I have not a clue how to Edit VBIOS's. I have opened them with Hex editors before, played around with them. But never understood the "wizardry" @nikey22 @Nick [D]vB behind it. Something Something DCB tables....
Would you say this would not be a suitable card to flash? https://www.ebay.co.uk/itm/Nvidia-G...550486?hash=item46906999d6:g:6tgAAOSwgaNc4VBK
Also in regards to the 780m, are the Clevo versions suitable for flashing? If not, what are the best versions of this card for flashing?
I've been following this thread for a while, and I'm sure my 6970 is going to die pretty soon haha! Will be doing the swap in the near future.
Thanks in advance guys!
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Hello i have mid 2010 iMac with gpu Ati HD 5670 and I3 cpu
I already order new i7 cpu from aliexpress and would like to upgrade the gpu too
I think will buy K3100m or gtx 765m but i want to ask if need some mod to the heatsink for work correctly
Thanks
I already order new i7 cpu from aliexpress and would like to upgrade the gpu too
I think will buy K3100m or gtx 765m but i want to ask if need some mod to the heatsink for work correctly
Thanks
This is a 27" iMac correct? if so, you probably want to source the MXM-B large heatsink as well, also go with the K3100m and not a 765m. No backlight control ROM is available for the 765M.
Yes 27” I forgot to write....
I know MXM-B it’s bigger than A model just ask if I need to modify something from Ati heatsink to work with the k3100m or I MUST buy the 3 pipe version
@Pascal Baillargeau Has let me know about an issue on 10.15.6 leading to a white screen when booting with AMD GOP cards. The solution to this is issue (agdpmod=pikera AKA changing board-id to board-ix) has new been edited into AppleGraphicsDevicePolicy Binary (thanks again @Pascal Baillargeau) and can now fix this issue without the use agdpmod=pikera added to WEG. I will be updating the files on the original AppleGraphicsControl to reflect these changes.
I recommend buying the larger 3 Pipe version and modifying (grinding) it. The smaller MXM-A heatsink doesn't have the cooling capacity or cover all the components.
Ok thanks...... 2011 heatsink model can be ok for my iMac 2010?
Where I can find spec number of the part?
Yes 2011 heatsinks work in 2010, vice versa. No issue with thermal sensor either.
Here's a link to a modded DosDude1 Catalina Patcher 1.4.4, avoiding the legacyGPU patch to be applied on iMacs 2009 (27'') and iMacs 2010 (21,5'' and 27'').
www.dropbox.com
Dropbox - File Deleted - Simplify your life
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Looking to do this on my 2011 27" iMac...
Going to use the @xanderon method of flashing the gpu
I'm guessing I will just place this rom in the Quadro_beta 1.2 folder of this thumb drive flash??
Or does it matter?
I got this card and flashed it now I'am like Alice in wonderland with my iMac
you can contact me if you want
I got this card and flashed it now I'am like Alice in wonderland with my iMac
you can contact me if you want
Awesome! I definitely will.
New to flashing cards so not entirely sure of the process but I've been reading all morning
If we use SSDs we don't really need ODD fan and HDD fan. We can redirect these airflows. The question is, redirect these airflows on the GPU itself or on GPU heatsink (to create a thermal flux), maybe one the GPU and another one on the heatsink?