Hello guys,
first, respect and admiration to tsialex for time and knowledges, to this incredible post (... and to others contributors, too). I'm sorry to ask probably already answered question, but I'm close to buy another video card and I want to know if it will be usefull.
I relate only my last night try :
Context :
- cMP X5690 3,46Ghz 48Gb RAM
- APFS volume, no FileVault
- ROM 140.0.0.0 but unable to know if MP51.0089.B00 version was applied before
- ATI 5770 and Sapphire RX580 Nitro+ 8Gb both installed and running (will be seen by High Sierra later)
Operation :
- boot on another HighSierra, and make clean install on target volume.
- shutdown, disconnect "temporary" HighSierra HDD.
- boot on "new" High Sierra. As said, the two cards are seen by OS.
- shutdown.
- disconnect ATI 5770.
- boot again, with power button during 10 seconds to force "buuuuuuuuuh" sound. Normal "chime" after.
- black screen during all boot sequence.
- login/password (admin), "About this Mac", Sapphire is recognized.
- clean install of Mojave on another APFS volume.
- reboot.... in black screen too.
- login/password (admin), it runs like a charm...
As I am very attached to boot screen and FileVault, I decided to change Sapphire for HD7950. Vendor confirmed that two functions will be present. Geekbench Sapphire's score is 130,000 points, and HD7950 one is 82,000 "only" (ok ATI 5770 shoot to 10,500...). Needs is Lightroom and Photoshop work, so HD7950 could be sufficient... but during this post, I saw that cMP can't run Mojave FileVault, with any video card.
So, ... what are your advises ? Thank you by advance.
first, respect and admiration to tsialex for time and knowledges, to this incredible post (... and to others contributors, too). I'm sorry to ask probably already answered question, but I'm close to buy another video card and I want to know if it will be usefull.
I relate only my last night try :
Context :
- cMP X5690 3,46Ghz 48Gb RAM
- APFS volume, no FileVault
- ROM 140.0.0.0 but unable to know if MP51.0089.B00 version was applied before
- ATI 5770 and Sapphire RX580 Nitro+ 8Gb both installed and running (will be seen by High Sierra later)
Operation :
- boot on another HighSierra, and make clean install on target volume.
- shutdown, disconnect "temporary" HighSierra HDD.
- boot on "new" High Sierra. As said, the two cards are seen by OS.
- shutdown.
- disconnect ATI 5770.
- boot again, with power button during 10 seconds to force "buuuuuuuuuh" sound. Normal "chime" after.
- black screen during all boot sequence.
- login/password (admin), "About this Mac", Sapphire is recognized.
- clean install of Mojave on another APFS volume.
- reboot.... in black screen too.
- login/password (admin), it runs like a charm...
As I am very attached to boot screen and FileVault, I decided to change Sapphire for HD7950. Vendor confirmed that two functions will be present. Geekbench Sapphire's score is 130,000 points, and HD7950 one is 82,000 "only" (ok ATI 5770 shoot to 10,500...). Needs is Lightroom and Photoshop work, so HD7950 could be sufficient... but during this post, I saw that cMP can't run Mojave FileVault, with any video card.
So, ... what are your advises ? Thank you by advance.