ATI CrossFireX Preview – Triple CrossFire BenchmarkingFri, Feb 29, 2008 - 8:00 AM
Call of Duty 4
Call of Duty 4: Modern Warfare is a first-person shooter developed by Infinity Ward and published by Activision for Xbox 360 , Playstation 3 and PC. It is the fourth installment in the Call of Duty video game series. It was announced on April 25, 2007 and was released on November 6, 2007 in North America. The single player game can be completed in well under seven hours, but the graphics are awesome. Click the image below to see Call of Duty 4 at 1920×1200 resolution with 4x AA enabled on the ATI Radeon HD 3870 graphics card.
Call of Duty 4: Modern Warfare runs on a proprietary graphics engine, and has features such as true world-dynamic lighting, HDR lighting effects, dynamic shadows and depth-of-field. “Bullet Penetration” is calculated by the engine, taking into account things such as surface type and entity thickness. Certain objects, such as cars, and some buildings are destructible. This makes distinguishing cover from concealment important, as meager protection such as wooden fences, thin walls and such no longer provide sufficient protection. The bullet’s speed and stopping power are decreased after penetrating an object, and this decrease is calculated realistically depending on the thickness and surface of the object penetrated. The game also makes use of a physics engine, which was not implemented in previous Call of Duty titles for the PC. Death Animations are a combination of pre-set animations and ragdoll physics. Some mistook the game’s graphics to be DirectX 10 based, but it is stated that the graphics use DirectX 9.
Results: Call of Duty 4 showed great scaling of CrossFire as moving from one Radeon HD 3870 to a pair and then two the CrossFireX setup resulted in nice performance gains. The single Radeon HD 3870 got just 25.80FPS at 1920×1200, which makes for stutters and game-play that most will get annoyed by. Running a pair of Radeon HD 3870′s in CrossFire nearly doubled performance at 51.30FPS and is enough to enjoy the game enough to play it all the way through. Adding that third GPU increased performance 50.8% over the CrossFire setup of two Radeon HD 3870′s with 77 frames per second.