pastrychef
Moderator
- Joined
- May 29, 2013
- Messages
- 19,458
- Motherboard
- Mac Studio - Mac13,1
- CPU
- M1 Max
- Graphics
- 32 Core
- Mac
- Classic Mac
- Mobile Phone
Yeah, I think I'm just falling down another rabbit hole here. I thought I fried my Vega last night after trying to get to the bottom of this. I am noticing that GB5 never really pushes the Core or Memory very high if I don't have RadeonBoost in there. So what I tried was to increase the Core clock at the lower states -- and it definitely didn't like it! The picture started flashing, then went black. Upon reboot, it locked up pre-POST. I turned everything off for a minute, then when it rebooted, the resolution was 640 x 480! Another reboot, and it was back to normal. Whew.
Anyway, I am curious what RadeonBoost does to get the better GB5 scores but not have that much effect in a "real" OpenCL test like LuxMark. I'm thinking that going forward, mattystonnie and CMMChris will eventually drop support for these extensions. Already, in Big Sur, mattystonnie's SSDT doesn't work. CMMChris dropped Vega support for his kext, and someone added it back in. I don't know how much longer these will last particularly as the Vega becomes obsolete. So I'm trying to figure out how to overclock on my own.
But ultimately, this is to bask in the glory of the high benchmark scores. Functionally, I don't really see much difference. Over in the Windows side where I game, the effects of overclocking are more noticeable. And the overclocking process is much more straightforward.
Thanks
Ted
Just as an FYI, I booted in to Windows to check my Vega settings (I use the same overclock in Windows as I do in macOS). I have my GPU clocked at 1630MHz @ 1050mV and VRAM clocked at 1020MHz @ 980mV. This allows the card top out at around 65C. I remember pushing the GPU and VRAM even higher but it resulted in the fans running way too loud. This ended up being the best balance for me.