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NVIDIA SLI Performance: GeForce GTX 660 Ti vs GTX 670

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Video Card Testing Methodology

The Microsoft DirectX-11 graphics API is native to the Microsoft Windows 7 Operating System, and will be the primary O/S for our test platform. DX11 is also available as a Microsoft Update for the Windows Vista O/S, so our test results apply to both versions of the Operating System. The majority of benchmark tests used in this article are comparative to DX11 performance, however some high-demand DX10 tests have also been included.

In each benchmark test there is one ‘cache run’ that is conducted, followed by five recorded test runs. Results are collected at each setting with the highest and lowest results discarded. The remaining three results are averaged, and displayed in the performance charts on the following pages.

A combination of synthetic and video game benchmark tests have been used in this article to illustrate relative performance among graphics solutions. Our benchmark frame rate results are not intended to represent real-world graphics performance, as this experience would change based on supporting hardware and the perception of individuals playing the video game.

Intel X79 Express Test System

DirectX-10 Benchmark Applications

  • Crysis Warhead v1.1 with HOC Benchmark
    • Settings: Airfield Demo, Very High Quality, 4x AA, 16x AF

DirectX-11 Benchmark Applications

  • 3DMark11 Professional Edition by Futuremark
    • Settings: Performance Level Preset, 1280×720, 1x AA, Trilinear Filtering, Tessellation level 5)
  • Aliens vs Predator Benchmark 1.0
    • Settings: Very High Quality, 4x AA, 16x AF, SSAO, Tessellation, Advanced Shadows
  • Batman: Arkham City
    • Settings: 8x AA, 16x AF, MVSS+HBAO, High Tessellation, Extreme Detail, PhysX Disabled
  • BattleField 3
    • Settings: Ultra Graphics Quality, FOV 90, 180-second Fraps Scene
  • Lost Planet 2 Benchmark 1.0
    • Settings: Benchmark B, 4x AA, Blur Off, High Shadow Detail, High Texture, High Render, High DirectX 11 Features
  • Metro 2033 Benchmark
    • Settings: Very-High Quality, 4x AA, 16x AF, Tessellation, PhysX Disabled
  • Unigine Heaven Benchmark 3.0
    • Settings: DirectX 11, High Quality, Extreme Tessellation, 16x AF, 4x AA

PCI-Express Graphics Cards

Graphics Card Radeon HD7970 GeForce GTX660Ti GeForce GTX670 GeForce GTX680 Radeon HD6990 GeForce GTX690
GPU Cores 2048 1344 1344 1536 3072 Total 3072
Core Clock (MHz) 925 915 915 1006 (1187 OC) 830/880 915 (1053 OC)
Shader Clock (MHz) N/A 980 Boost 980 Boost Boost 1058 (1240 OC) N/A Boost 1020 (1215 OC)
Memory Clock (MHz) 1375 1502 1502 1502 (1600 OC) 1250 1502 (1601 OC)
Memory Amount 3072MB GDDR5 2048MB GDDR5 2048MB GDDR5 2048MB GDDR5 4096MB GDDR5 4096MB GDDR5
Memory Interface 384-bit 192-bit 256-bit 256-bit 256-bit 256-bit


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