AMD R9 285 2GB CrossFire Scaling and Performance - Page 3

Submitted by Jason Singh on Tue, 10/06/2015 - 12:20

1440p Crossfire Performance

Menu
Introduction ansd Test System
1080p Crossfire Performance
1440p Crossfire Performance
Conclusion-Is it worth it?

We were much more excited to test out the CrossFire performance and scaling at a higher resolution like 1440p. The thought of testing it at 4K did cross our minds but the 2GB Memory made us decide against it. It makes more sense to run two R9 285’s at 1440p rather than 1080p. It seems like upping the resolution did increase overall GPU usage which resulted in not only better performance and scalability but a smoother overall gaming experience. We did not face any micro-stutter and gameplay was very smooth and it did feel like playing with a single GPU, with the only difference being increased performance. At 1440p, adding a second R9 285 helped cross that 35-50fps borderline and FPS sailed much higher. Even though the second GPU did not give us exact performance equal to a single R9 285, it came pretty close and the R9 295 CrossFire at 1440p could be a good alternative for those who cannot spend a huge amount of money on a very high end GPU but are still looking for more performance and future upgradability. We will be going into details about the problems and benefits of CrossFire in the conclusion of the review. The CPU was clocked to 4.8Ghz to alleviate any CPU bottleneck while the GPUs were run at their stock clock speed of 965/1400Mhz. We left the Ram speed at 1866Mhz, CL 11.

Games Tested

  • Shadow of Mordor
  • Tomb Raider
  • Metro 2033 Redux
  • Metro Last Light Redux
  • Dirt 3
  • Sleeping Dogs
  • Resident Evil 6

 

Shadow of Mordor

Settings:

Lighting Quality:High, Mesh Quality:Ultra, Motion Blur:Camera and Objects, Shadow Quality:High, Texture Filtering:Ultra, Texture Quality:High, Ambient Occlusion:Medium, Vegetation Range:Ultra, Depth of Field:On, Order Independent Transparency:On, Tessellation:On

 

Tomb Raider

Settings:

Quality:Ultimate Preset

 

Metro 2033 Redux

Settings:

Quality:Very High, SSAA:Off, Texture Filtering:X16, Motion Blur:Normal, Tessellation:Very High, Advanced PhysX:Off

 

Metro Last Light Redux

Settings:

Quality:Very High, SSAA:Off, Texture Filtering:X16, Motion Blur:Normal, Tessellation:Very High, Advanced PhysX:Off

 

Dirt 3

Settings:

Quality:Ultra Preset, MSAA:x8

 

Sleeping Dogs

Settings:

Quality:Extreme Preset, High Resolution Textures:Enabled

 

Resident Evil 6

Settings:

Anti-Alias:FXAA3QH, Motion Blur:On, Shadow Quality:High, Texture Quality:High, Screen Quality:High

 

Performance Summary

Games

R9 285 FPS/Score

R9 285 Crossfire FPS/Score

Increase in FPS/Score

Shadow of Mordor

56.3

72.54

16.24

Tomb Raider

41.3

79.9

38.6

Metro 2033 Redux

27.93

51.26

23.33

Metro Last Light Redux

33.17

56.41

23.24

Dirt 3

74.83

126.68

51.85

Sleeping Dogs

17.2

53.2

36

Resident Evil 6

6388

8304

1916

 

Having a look at the performance chart above we could easily deduce that it was definitely worth adding in a second R9 285 and the performance benefits were more noticeable than those achieved at 1080p. At 1440p the GPUs were close to being completely maxed out and we did not notice any spikes in the GPU usage.

 

 

 

 

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