- Joined
- May 23, 2017
- Messages
- 246
- Motherboard
- Asus ProArt Z690-Creator WiFi
- CPU
- i7-13700K
- Graphics
- RX 6900 XT
- Mac
@CaseySJ
Hello again! And kudos to your 12th-gen innovations! It's been pretty fun watching all of that!
Non-urgent question here (and apologies for the long read):
You may or may not recall I have three+ builds based on this thread. All have various differences hardware-wise, but the OC/MacOS's are basically the same (OC 7.7, latest Catalina), F9i BIOS, not using Wireless anything, dual 27" monitors running "retina" 2560x1440 via DP.
My main work build has had a Sapphire Vega 64 for a few years (iMacPro1,1 SMBIOS). For the last year or so, I've been getting weird freezes (mouse moves, but computer unresponsive) when the machine is under a large stress. I completely fresh installed Catalina, awhile back thinking it was just the years of use to rule out the OS, but it still occurred. Cut to the chase, I determined that when I disable GPU rendering (AVID MediaComposer/Resolve) the machine is fine, so I started thinking the Vega 64 must be going out. I swapped the Vega 64 into the twin computer (but with only a 650W PSU), and THAT computer's RX590 into mine, and there were no freezes on either machine. I then installed the Vega on my home z390m build, and stress tested it the same way (and also in Windows with Furmark) and the Vega was fine. Then I started thinking my PSU (PowerSpec 750 Bronze) was the issue and maybe was crapping out under heavy load, so I tried again by putting a Radeon VII in the computer, and again, EVERYTHING was fine. The Radeon VII is of course newer/better tech than the Vega, but TDP the should be pretty similar.
Sooo.... there seems to be some issue with the Vega64 on this particular build. I do NOT have any power-play tables/SSDTs installed for it, and I've done away with Radeon Boost awhile back. I've cross-checked all BIOS/OC settings with all the other machines and your vanilla EFI, and all is in alignment. I can't imagine the Vega is pulling MORE power than the Radeon VII, but, really, that's all I have left due to the fact that the Vega performs no problem in two other machines (one with a 650 PSU and one with an 850).
Right now, I'm 100% working fine with the Radeon VII and I really hit it hard to stress test it and I have zero freezes, so I'll probably just stay with that whilst I can (it's better anyway), but my interest is piqued as to the 'why.'
At first I was thinking that perhaps the OS prefers a iMac 19,1 SMBIOS with a Vega, but then, why would it run perfect on the other machines both with iMacPro1,1 (disabled iGPU) configs?
Super weird, right?
No rush,
Thanks as always!
J
Hello again! And kudos to your 12th-gen innovations! It's been pretty fun watching all of that!
Non-urgent question here (and apologies for the long read):
You may or may not recall I have three+ builds based on this thread. All have various differences hardware-wise, but the OC/MacOS's are basically the same (OC 7.7, latest Catalina), F9i BIOS, not using Wireless anything, dual 27" monitors running "retina" 2560x1440 via DP.
My main work build has had a Sapphire Vega 64 for a few years (iMacPro1,1 SMBIOS). For the last year or so, I've been getting weird freezes (mouse moves, but computer unresponsive) when the machine is under a large stress. I completely fresh installed Catalina, awhile back thinking it was just the years of use to rule out the OS, but it still occurred. Cut to the chase, I determined that when I disable GPU rendering (AVID MediaComposer/Resolve) the machine is fine, so I started thinking the Vega 64 must be going out. I swapped the Vega 64 into the twin computer (but with only a 650W PSU), and THAT computer's RX590 into mine, and there were no freezes on either machine. I then installed the Vega on my home z390m build, and stress tested it the same way (and also in Windows with Furmark) and the Vega was fine. Then I started thinking my PSU (PowerSpec 750 Bronze) was the issue and maybe was crapping out under heavy load, so I tried again by putting a Radeon VII in the computer, and again, EVERYTHING was fine. The Radeon VII is of course newer/better tech than the Vega, but TDP the should be pretty similar.
Sooo.... there seems to be some issue with the Vega64 on this particular build. I do NOT have any power-play tables/SSDTs installed for it, and I've done away with Radeon Boost awhile back. I've cross-checked all BIOS/OC settings with all the other machines and your vanilla EFI, and all is in alignment. I can't imagine the Vega is pulling MORE power than the Radeon VII, but, really, that's all I have left due to the fact that the Vega performs no problem in two other machines (one with a 650 PSU and one with an 850).
Right now, I'm 100% working fine with the Radeon VII and I really hit it hard to stress test it and I have zero freezes, so I'll probably just stay with that whilst I can (it's better anyway), but my interest is piqued as to the 'why.'
At first I was thinking that perhaps the OS prefers a iMac 19,1 SMBIOS with a Vega, but then, why would it run perfect on the other machines both with iMacPro1,1 (disabled iGPU) configs?
Super weird, right?
No rush,
Thanks as always!
J