NVIDIA GeForce Go 7800 GTX
Introduction
In the past, notebooks and gaming were two mutually exclusive things. Granted, you could get away with some Solitaire or Pinball though that was just about the extent of any gaming for mobile users. Over the course of the last few years, we've witnessed the notebook industry go through some dramatic changes. Gaming-specific notebooks were introduced by boutique PC vendors such as VoodooPC and Alienware and offered a solid gaming experience using mainstream desktop GPUs and faster LCD screens to minimize any ghosting effect. Once Dell entered the picture with their XPS line of gaming notebooks, the world knew that the "gaming notebook" was more than a marketing buzz word and that it was here to stay. Although there have been some dramatic advances in this market, today's product launch is perhaps the most significant milestone to date. With the launch of the GeForce Go 7800 GTX, NVIDIA has set a new precendent by offering a mobile GPU which is on par with the fastest desktop GPU money can buy. For the first time, notebook users have performance parity with any desktop on the market, save for perhaps an SLI setup (at least for now).
For an in-depth analysis of the base technology behind the GeForce Go 7800 GTX, please reference HotHardware's full review of the desktop GeForce 7800 GTX. Now we know what you're thinking, NVIDIA must have cut some corners here and there to squeeze the latest flagship desktop GPU into a notebook. Well, aside from a minor 30MHz drop in core frequency this new mobile GPU has an identical feature set. In fact, there are several additional features to cater to mobile users which make this new graphics core the most robust GPU to ever be harnessed by a notebook thus far. We'll investigate these features on the following pages.
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| NVIDIA CineFX 4.0 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 ·_Accelerated texture access ·_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 API Support •Complete DirectX support, including the latest version of Microsoft DirectX 9.0 Shader Model 3.0 •Full OpenGL support, including OpenGL 2.0 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 NVIDIA Intellisample 4.0 Technology • Advanced 16x anisotropic filtering (with up to 128 Taps) •Blistering- fast antialiasing and compression performance •Gamma-adjusted rotated-grid antialiasing removes jagged edges for incredible image quality •Transparent multisampling and transparent supersampling modes boost antialiasing quality to new levels •Support for normal map compression •Support for advanced lossless compression algorithms for color, texture, and z-data at even higher resolutions and frame rates •Fast z-clear NVIDIA UltraShadow II Technology •Designed to enhance the performance of shadow-intensive games NVIDIA Digital Vibrance Control (DVC) 3.0 Technology •DVC color controls •DVC image sharpening controls Advanced Display Functionality • Dual integrated 400MHz RAMDACs for display resolutions up to and including 2048x1536 at 85Hz •Dual DVO ports for interfacing to externa l TMDS transmitters and external TV encoders •Full NVIDIA nView multi-display technology capability |
NVIDIA PureVideo Technology • Adaptable programmable video processor •High-definition MPEG-2 and WMV9 hardware acceleration •Spatial-temporal de- interlacing •Inverse 2:2 and 3:2 pull-down (Inverse Telecine) •4-tap horizontal, 5-tap vertical scaling •Overlay color temperature correction •Microsoft Video Mixing Renderer (VMR) supports multiple video windows with full video quality and features in each window •Integrated HDTV output Composited Desktop Hardware Engine • Video post-processing •Real-time desktop compositing •Accelerated antialiased text rendering •Pixel shader-driven special effects and animation Advanced Engineering •Designed for PCI Express x16 •Designed for high-speed GDDR3 memory •Designed around MXM constraints •Same Thermal, Power, and Space contraints as GeForce Go 6800 Ultra Operating Systems • Windows XP/Windows XP 64 •Windows ME •Windows 2000 •Linux •Macintosh OS X
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