AMD Radeon R9 285 Linux GPU Scaling Performance

[phoronix]

Phoronix: AMD Radeon R9 285 Linux GPU Scaling Performance

For those wondering about the maximum resolution they can run given OpenGL workloads at with the AMD Radeon R9 285 "Tonga", a new ~$250 USD graphics card, here's some Linux GPU scaling benchmarks with the Catalyst driver...

http://www.phoronix.com/vr.php?view=MTgxNTc

[Veto]

These tests seem to indicate that the Catalyst driver is CPU constrained. Only at 4k is the GPU really becoming the bottleneck. This is probably also the reason why the high end AMD GPUs lose out to NVidia in the comparisons - NVidia probably has less driver overhead and can reach rediculous fps when overpowered for the workload.

[smitty3268]

Unigine Tropics is sub-60 FPS at 3840 x 2160 on Ubuntu Linux.

The chart shows the min fps as 62.2, not sub-60.

[smitty3268]

These tests seem to indicate that the Catalyst driver is CPU constrained. Only at 4k is the GPU really becoming the bottleneck. This is probably also the reason why the high end AMD GPUs lose out to NVidia in the comparisons - NVidia probably has less driver overhead and can reach rediculous fps when overpowered for the workload.

Yeah, that's why any test over 120fps is of very limited use. Although it's good to see nothing crazy is going on, at least.

[przemoli]

Yeah, that's why any test over 120fps is of very limited use. Although it's good to see nothing crazy is going on, at least.

Disagree.

Game devs if using special techniques could actually give lower latency to users.

And human reflex can go as low as 6ms -> 160 fps...

Yes 120FPS with adaptive refresh rate, with gpu rendering on the last moment, is good enough for most of us, but not all of us.

[AnonymousCoward]

absolutely no need for FPS higher than 60FPS. actually most of the time game state update (physic, positions AI) is locked to fixed time step. so if you implement it properly you can have for example 100-200Hz input handling even thought the GPU is rendering only 20FPS.

[uid313]

Really nice to see 4K resolutions included in the benchmarks.

[przemoli]

absolutely no need for FPS higher than 60FPS. actually most of the time game state update (physic, positions AI) is locked to fixed time step. so if you implement it properly you can have for example 100-200Hz input handling even thought the GPU is rendering only 20FPS.

Correct.

But humans need FEEDBACK.

This require 25 FPS minimum.
And there are people who claim that they can SEE difference up to 60 FPS.

Lack of feedback => more discomfort.

[grndzro]

Eh. 285 is the budget version of Tonga.
285X will be a lot better in every area.

[Passso]

Disagree.

Game devs if using special techniques could actually give lower latency to users.

And human reflex can go as low as 6ms -> 160 fps...

Yes 120FPS with adaptive refresh rate, with gpu rendering on the last moment, is good enough for most of us, but not all of us.

Are you telling us that you see, analyse, adapt and act 160 times per seconds ?? If you are a biological human being this is non sense...