| 21 Oct 2025 |
 Luke | Uh, GPU may not support it? | 21:19:36 |
| Luke | Old GPU | 21:19:40 |
| Luke | Well at least we have hit 120Hz - only halfway to go until it's running as specified | 21:20:20 |
 K900 | It should support it | 21:20:45 |
| Luke | Or I guess halfway there? | 21:20:46 |
| K900 | DSC is baseline for DP 1.4 | 21:20:49 |
| K900 | Generally | 21:20:52 |
 ElvishJerricco | isn't there a DP 1.4a or something that very slightly upgraded DSC? | 21:21:18 |
| Luke | Radeon VII does not seem to support DSC | 21:21:51 |
| K900 | Vega has 1.4a | 21:22:14 |
| Luke | Oh wait maybe it does | 21:22:16 |
| Luke | lol | 21:22:18 |
| Luke | Looking at the wrong specs | 21:22:23 |
| K900 | It definitely should | 21:22:40 |
| ElvishJerricco | (btw, is there a way to tell from linux whether DSC is in use? I've never been able to figure that out) | 21:22:41 |
| K900 | It is a very very slightly upgraded Vega | 21:22:53 |
| Luke | Basically a compute card with outputs strapped to it lol | 21:24:13 |
| K900 | Eh, Vega was a perfectly capable gaming GPU as well | 21:26:15 |
| K900 | It was honestly way overspecced for rendering given the super wide backend | 21:27:55 |
| K900 | (and that's why they went with wave32 on RDNA) | 21:28:09 |
| Luke | I originally picked it up for compute purposes actually - it was a great deal with awful software support for 16GiB of VRAM when it came out | 21:30:10 |
| Luke | Still quite capable on ROCm actually | 21:30:27 |
| Luke | I'm quite fond of it - I can't find info about DSC support though | 21:30:54 |
| K900 | Again, DSC is baseline for DP 1.4 | 21:31:35 |
| K900 | And Vega should have 1.4a | 21:31:42 |
| ElvishJerricco | (I guess, at least for amdgpu, /sys/kernel/debug/dri/0000:03:00.0/DP-1/dsc_clock_en indicates whether it's in use?) | 21:33:35 |
| Luke | https://web.archive.org/web/20210619070751/https://community.amd.com/t5/graphics/radeon-vii-lg-27gn950b/td-p/460639 | 21:40:45 |
| Luke | Seems not | 21:40:53 |
| Luke | I wonder if HDMI can handle it? | 21:41:40 |
| K900 | Definitely not without DSC | 21:41:47 |
