Legit Video Card Reviews
HIS Radeon HD 4870 CrossFire Video Card Review - GDDR5 Arrives
|Product:||Radeon HD 4870|
|Date:||Wed, Jun 25, 2008 - 12:00 AM|
|Written By:||Nathan Kirsch -|
LIGHTSMARK is a new benchmark/demo with real-time global illumination and penumbra shadows created by Stepan Hrbek. Lightsmark version 1.3 was used as it contains new rendering paths for ATI Radeon HD 2xxx and 38XX series graphics cards. Before version 1.3 was released, the ATI Radeon HD 38xx series video cards were unable to render objects in the benchmark.
- realtime global illumination
- realtime penumbra shadows
- realtime color bleeding
- infinite light bounces
- fully dynamic HDR lighting
- 220000 triangles in scene
It should be noted that ATI questioned our use of this benchmark as the developer is a private individual that never contacted developer relations at ATI. ATI also made it clear to us that although this benchmark uses global illumination, that it is not similar to the DX10.1 demo that ATI been showing. ATI isn't sure how the benchmark is made as they have not had time to look into it, but if its rendering to cube maps then its likely that performance could be increased if the app used DX10.1's indexed cube maps.
To be fair to both side we contacted the creator of Lightsmark 2007 and Stepan Hrbek had this to say.
"I developed it with 3 Radeon and 3 GeForce cards, randomly switching them, there are no special optimizations, IMHO it's fair. I bought all 6 cards, no gifts.. Small unfairness is only in quality. The same shader on Nvidia card produces smoother shadows but I don't give Nvidia any bonus points for quality, only fps is measured. It uses completely new technique where part of calculation runs on CPU, drivers were not optimized for it for years, so it's possible that it hits some unoptimized driver code. But both companies are in the same situation."
Since we ran the test, we will go ahead and include it, but what the results mean is up in the air.
Benchmark Results: Lightsmark 2007 v1.3 shows that the GeForce 9800 GTX+ and Radeon HD 4870 are pretty close to eachother. The ATI Radeon HD 3870 beats the ATI Raedeon HD 3870 X2 since this benchmark doesn't scale for multi-GPU and the Radeon HD 3870 has higher clock speeds.
Next Page - 3DMark 2006
Page 1 - The Radeon 4000 Series Officially Launches
Page 2 - A Closer Look at the Radeon HD 4870
Page 3 - Under The Heat Spreader
Page 4 - Retail Box and Bundle
Page 5 - The Test System
Page 6 - Tomb Raider: Anniversary
Page 7 - Company of Heroes
Page 8 - World in Conflict
Page 9 - S.T.A.L.K.E.R.
Page 10 - BioShock
Page 11 - Crysis
Page 12 - Call of Duty 4
Page 13 - Lightsmark 2007
Page 14 - 3DMark 2006
Page 15 - 3DMark Vantage
Page 16 - Temperatures
Page 17 - Overclocking
Page 18 - Power Consumption and Final Thoughts