Tweet
I was curious, so I did some tests on both systems/ both drivers. At least I tried 
My system: i5 750 at 3.6 GHz and HD7950 at 880MHz.
Ubuntu, kernel: 3.18 for radeonsi, 3.16 for fglrx
Windows 8.1
AMD Omega driver on both systems
A few notes:
- I'm sorry I didn't bench all possible combinations - but I think the relevant ones.
- TF2 is totally playable with radeonsi, but it can drop really low on intense fights - like the one in the benchmark. Which doesn't really happen in the D3D9 version. You can download the demo and look for yourself: http://teamfortress.tv/thread/7598/tf2-benchmarks, folder is ~/.local/share/Steam/steamapps/common/Team Fortress 2/tf
- TF2 is limited extremely by CPU - therefore it's odd, that the linux version doesn't perform as well as the windows one by quite a margin
- I wasn't able to lauch steam with fglrx -- I haven't installed this driver for a long time and I probably will not in the future... installing it on a not pristine ubuntu is just one big hassle
So what's the conclusion: yeah, AMD's GL performance on Windows is basically the same as with fglrx (if it works). But D3D is always faster in GPU bound situations on the few benchmarks I ran.
fglrx though - it reinforced all my bad feelings about this driver. Tearing in firefox, doesn't work with steam / the installation is utterly broken, vsynch introduces immense lag, etc. Good thing this crap will hopefully be replaced in the future - and now I will purge it from my system, after I had to delete ALL personal settings regarding unity to get it to work. Bye
| Mesa 10.5.0-devel | D3D9 | D3D11 | GL/Windows | fglrx | |
| Heaven 4.0 no tess. (score/fps) | 608/24.1 | 987/39.2 | |||
| Heaven 4.0 tess. extreme (score/fps) | 831/33.0 | 707/28.1 | 683/27.1 | ||
| Valley 1.0 (score/fps) | 794/19.0 | 1674/40.0 | 1754/41.9 | 1461/34.9 | 1413/33.8 |
| TF2 (fps) | 61.30 | 74.22 | ??? |
Ubuntu, kernel: 3.18 for radeonsi, 3.16 for fglrx
Windows 8.1
AMD Omega driver on both systems
A few notes:
- I'm sorry I didn't bench all possible combinations - but I think the relevant ones.
- TF2 is totally playable with radeonsi, but it can drop really low on intense fights - like the one in the benchmark. Which doesn't really happen in the D3D9 version. You can download the demo and look for yourself: http://teamfortress.tv/thread/7598/tf2-benchmarks, folder is ~/.local/share/Steam/steamapps/common/Team Fortress 2/tf
- TF2 is limited extremely by CPU - therefore it's odd, that the linux version doesn't perform as well as the windows one by quite a margin
- I wasn't able to lauch steam with fglrx -- I haven't installed this driver for a long time and I probably will not in the future... installing it on a not pristine ubuntu is just one big hassle
So what's the conclusion: yeah, AMD's GL performance on Windows is basically the same as with fglrx (if it works). But D3D is always faster in GPU bound situations on the few benchmarks I ran.
fglrx though - it reinforced all my bad feelings about this driver. Tearing in firefox, doesn't work with steam / the installation is utterly broken, vsynch introduces immense lag, etc. Good thing this crap will hopefully be replaced in the future - and now I will purge it from my system, after I had to delete ALL personal settings regarding unity to get it to work. Bye
Comment