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Exclusive: ASUS Extreme N7800 GTX TOP (GeForce 7800 GTX)
By Vincent Chang
Category : Graphics
Published by Vijay Anand on Thursday, 18th August, 2005
Rating : 4.5 out of 5 stars  


The recent introduction of the GeForce 7800 GT cements NVIDIA's grip on the high-end graphics segment. ATI has conceded that its equivalent chip, the R520 has been delayed to the September/October period from its initial July launch, and that its other middle to lower range products, the R515 and R530 may end up being released around the same time; this is contrary to the usual ATI practice of launching the high-end part first with a bang, before gradually scaling down for the middle and low end.

While ATI is still sweating it out with its production 'demons', there has been no lack of developments in the graphics scene. For the past few weeks, we have seen the launch of two GT-class products, ATI's Radeon X800 GT and NVIDIA's GeForce 7800 GT (Ed:- Anymore of these apparently meaningless and arbitrary model names and monikers and even we would start to get confused). We have covered the competitive performance and price of the Radeon X800 GT and we will be featuring the performance of the GeForce 7800 GT in a review shortly. However, we have just received an exciting product from one of the leaders in the field, ASUS, that we feel should get TOP billing instead. After all, this is none other than ASUS' highest end enthusiast level graphics card, the appropriately named ASUS Extreme 7800 GTX TOP.

As the latest in ASUS' line of factory overclocked performance edition (hence the TOP name, which means Top Overclocking Performance), the ASUS Extreme N7800 GTX TOP has quite a task to match the standards set by the previous TOP cards. ASUS claims to select only the best performing graphics processing unit (GPUs) capable of handling the stresses of overclocking for these cards. Together with the fastest memory chips and a customized cooling solution, the TOP edition is the fastest graphics card produced by ASUS for any particular GPU. Add that to the solid reputation ASUS has built up over the years with both enthusiasts and mainstream consumers alike and that says a lot of the TOP series. So does the ASUS Extreme N7800 GTX TOP truly lives up to its status? Read on as we reveal to you if this card is as good as its specifications suggest.

ASUS' Extreme N7800 GTX TOP goes all out to impress the enthusiasts.

ASUS Extreme N7800 GTX TOP Technical Specifications
Graphics Engine
  • NVIDIA GeForce 7800 GTX GPU
    • Stock 2D GPU clock = 275MHz
    • Stock 3D GPU clock = 486MHz
  • NVIDIA CineFX 4.0 Shading Engine
    • Vertex Shaders
      • Support for DX 9.0 Vertex Shader 3.0
      • Displacement Mapping
      • Vertex Frequency Stream Divider (Geometry Instancing)
      • Infinite length vertex programs (supported in hardware)
    • Pixel Shaders
      • Support for DX 9.0 Pixel Shader 3.0
      • Full pixel branching support
      • Multiple Render Targets (MRTs)
      • Infinite length pixel programs (supported in hardware)
    • Texturing Engine Features
      • Accelerated textures access
      • Up to 16 textures per rendering pass
      • Support for 16-bit and 32-bit floating point formats
      • Support for sRGB texture format for gamma textures
      • DirectX and S3TC texture compression
    • Full 128-bit FP Precision Graphics Pipeline
      • Native support for 32 / 64 / 128 bits per pixel rendering modes
  • 64-Bit Texture Filtering and Blending
  • NVIDIA UltraShadow II Technology (accelerates shadow computations)
  • NVIDIA SLI Technology
  • NVIDIA Intellisample 4.0 Technology
    • 16x Anisotropic Filtering
    • Adaptive Texture Filtering
    • Gamma-adjusted Rotated Grid Antialiasing
    • Transparent multisampling and supersampling modes
    • Fast antialiasing and compression performance
    • Loss-less Color, Texture and Z-Data Compression algorithms (in real time)
    • Fast Z-clear
    • Support for normal map compression
  • NVIDIA PureVideo Technology
    • Dedicated programmable on-chip video processor
    • MPEG-2 video encode and decode
    • High Definition MPEG-2 and WMV9 hardware decode acceleration (up to 1080i)
    • Post Processing Features
      • Spatial-Temporal De-Interlacing (adaptive)
      • NTSC 3:2 Pulldown / Bad Edit correction
      • PAL 2:2 Pulldown correction
    • High quality 4x5 video scaling and filtering
    • Microsoft Video Mixing Renderer (VMR)
    • Integrated HDTV output (with HDCP support)
  • Composited Desktop Hardware Engine (for Windows Longhorn)
  • Advanced Video and Display Functionality
    • Dual 400MHz RAMDACs that support resolutions of 2048x1536@85Hz
    • Dual DVO ports for interfacing external TMDS transmitters and external TV/HDTV encoder
    • nView Multi-display Technology
  • NVIDIA Digital Vibrance Control (DVC) 3.0
  • Designed for PCI Express x16
  • Advanced thermal monitoring and thermal management
Graphics Memory
  • 256-bit memory interface
  • 256MB Graphics DDR3 SDRAM (1.6ns)
  • Default clock rate of 675MHz (effective speed of 1350MHz DDR)
Display Capabilities
  • Dual 400MHz RAMDACs that support resolutions of 2048x1536@85Hz
  • Integrated dual TMDS transmitters (DVI 1.0 compliant and HDCP ready)
  • 1x mini-DIN connector (for Video-out)
  • 2x DVI-I connector (for Digital Flat Panel displays, compatible with analog displays with converter)
Drivers & Software
  • Driver support for Microsoft Windows 9x/ME/2000/XP/XP MCE/XP Pro x64, Linux and Macintosh OS (including OS X)
  • CyberLink PowerDirector 3.0DE
  • CyberLink MediaShow 2.0SE
  • FarStone VirtualDrive 9
  • ASUS Gamepack
  • Project Snowblind
  • Xpand Rally
Other Information
  • PCI Express x16 slot required
  • 2 PCIe expansion slots needed
  • Dedicated 6-pin PCIe Molex power connector required (not shared or split)
  • Power supply rated for 400W or higher recommended by NVIDIA (500W PSU for SLI setup)

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