A few months ago, we assessed the performance of a pair of GeForce 6800 GTs and a pair of GeForce 6800 Ultras running in SLI-mode, and were impressed by the platform's performance. We did have some concerns over driver support and the TCO of the platform, however. NVIDIA's current SLI (Scalable Link Interface) technology requires a specific profile be integrated into the drivers that dictates whether alternate frame rendering (AFR) or split-frame rendering (SFR) can be used for a particular application, and without that profile SLI won't function correctly. And a pair of GeForce 6800-class cards plus an nForce 4 SLI motherboard commands a significant monetary investment, so the technology isn't for everyone.
Today though, we're approaching SLI from a different angle. We've acquired a pair of SLI-capable Asus Extreme N6600GT, GeForce 6600GT based, graphics cards, nForce 4 SLI motherboards have gotten much more affordable than they were at launch, and we're working with the third official set of SLI-enabled Forceware drivers to be released. NVIDIA's SLI technology has matured nicely since we first wrote about it in December, and the cost of a pair of GeForce 6600GTs and an SLI capable motherboard is much easier to justify than its high-end dual-6800 based cousin. Read on to see what we think of a mid-range SLI configuration like this one, by way of a pair of Asus Extreme N6600 GTs...
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Specifications & Features of The Asus Extreme N6600GT |
NVIDIA's Value Priced PCI-Express GPU |
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CINEFX 3.0 SHADING ARCHITECTURE
- Vertex Shaders
Support for Microsoft DirectX 9.0 Vertex Shader 3.0
Displacement mapping
Geometry Instancing
Infinite length vertex programs*
- Pixel Shaders
Support for DirectX 9.0 Pixel Shader 3.0
Full pixel branching support
Support for Multiple Render Targets (MRTs)
Infinite length pixel programs*
- Next-Generation Texture Engine
Up to 16 textures per rendering pass
Support for 16-bit floating point format and 32-bit floating point format
Support for non-power of two textures
Support for sRGB texture format for gamma textures
DirectX and S3TC texture compression
- Full 128-bit studio-quality floating point precision through the entire rendering pipeline with native hardware support for 32bpp, 64bpp, and 128bpp rendering modes
64-BIT TEXTURE FILTERING AND BLENDING
- Full floating point support throughout entire pipeline
- Floating point filtering improves the quality of images in motion
- Floating point texturing drives new levels of clarity and image detail
- Floating point frame buffer blending gives detail to special effects like motion blur and explosions
INTELLISAMPLE 3.0 TECHNOLOGY
- Advanced 16x anisotropic filtering
- Blistering-fast anti-aliasing and compression performance
- New rotated-grid anti-aliasing removes jagged edges for incredible edge quality
- Support for advanced lossless compression algorithms for color, texture, and z-data at even higher resolutions and frame rates
- Fast z-clear
- High-resolution compression technology (HCT) increases performance at higher resolutions through advances in compression technology
ULTRASHADOW II TECHNOLOGY
- Designed to enhance the performance of shadow-intensive games, like id Softwares Doom III
ADVANCED ENGINEERING
- Designed for PCI Express x16
- Supports for AGP 8X including Fast Writes and sideband addressing
- Designed for high-speed GDDR3 memory
- 128-bit advanced memory interface
- 0.11 micron process technology
- Advanced thermal management and thermal monitoring
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ADVANCED VIDEO AND DISPLAY FUNCTIONALITY
- Dedicated on-chip video processor
- MPEG video encode and decode
- WMV9 decode acceleration
- Advanced adaptive de-interlacing
- High-quality video scaling and filtering
- DVD and HDTV-ready MPEG-2 decoding up to 1920x1080i resolutions
- Dual integrated 400 MHz RAMDACs for display resolutions up to and including 2048x1536 at 85Hz.
- Dual DVO ports for interfacing to external TMDS transmitters and external TV encoders
- Microsoft Video Mixing Renderer (VMR) supports multiple video windows with full video quality and features in each window
- Full NVIDIA nView multi-display technology capability
NVIDIA DIGITAL VIBRANCE CONTROL (DVC) 3.0
- DVC color controls
- DVC image sharpening controls
OPERATING SYSTEMS
- Windows XP
- Windows ME
- Windows 2000
- Windows 9X
- Macintosh OS, including OS X
- Linux
API SUPPORT
- Complete DirectX support, including the latest version of Microsoft DirectX 9.0
- Full OpenGL, including OpenGL 1.5
* The operating system or APIs can impose limits, but the hardware does not limit shader program length.
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Asus included a well balanced assortment of accessories and software with the Extreme N6600GT, especially considering this is a mid-range video card targeted at budget-conscious gamers. Bundled with the card itself, we found a simple user's manual that outlines the card's main features and installation, an S-Video cable, and a DVI-to-DB15 adapter. Along with these accessories, Asus included a plastic CD case as well, that held copies of Novalogic's Joint Operations: Typhoon Rising, AsusDVD DVD playback software, Cyberlink PowerDirector 3DE, and Medi@Show SE v2.14. There was also another pair of CDs included in the retail package, that contained all of the necessary drivers to install the Extreme N6600GT, and a copy of Asus' proprietary "Game Face" application, a real-time audio/video communications program that works in conjunction with a webcam and microphone.