Dell(载尔)发布全世界首款采用NVIDIA GeForce Go 6800 Ultra的笔电
资料来源:
http://www.hothardware.com/viewart...eid=648&cid=10
About three weeks ago, we tested a new Acer notebook powered by ATI's
Mobility Radeon X700 . With our testing complete, we found the
Mobility Radeon X700 to be a well-balanced mobile GPU that offered very good performance, in a thin and relatively light
form factor. Then, a few days after that article went live, we were contacted by representatives from NVIDIA and given an opportunity to test a different sort of animal. NVIDIA told us they'd be releasing a new mobile GPU meant for high-end, desktop replacement notebooks. What we ended up getting our hands on was a new Dell Inspiron XPS Gen 2 with a GeForce Go 6800 Ultra pushing the pixels.
The GeForce Go 6800 Ultra incorporates all of the
technology found in NVIDIA's desktop NV4x architecture, like PureVideo, UltraShadow II, and PS 3.0 support, plus some mobile-specific features of its own. The specifications listed below, and the
information in this article , will bring you up to speed on what the NV4x architecture brings to table. When you're done perusing that, read on to see what NVIDIA has in store for gamers on the go; you won't be disappointed.
Specifications & Features of The GeForce Go 6800 Ultra Top-of-the-Line Mobile Graphics 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
• _ 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
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 antialiasing and compression performance
• _ New rotated-grid antialiasing 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
PureVideo - Advanced Video Functionality
• _ Dedicated on-chip video processor
• _ MPEG HD video encode and decode
• _ WMV9 HD decode acceleration UltraShadow II Technology
• _ Designed to enhance the performance of shadow-intensive games, like id Software's Doom 3 Advanced Display Functionality
• _ Dual integrated 400MHz RAMDACs for display resolutions up to and including 2048x1536 at 85hz
Dual DVO ports for interfacing to external TMDS transmitters and external TV encoders
• _ Full NVIDIA nView multi-display technology capability
Advanced Engineering
• _ Designed for PCI Express x16
• _ Designed for high-speed DDR, DDR2, and GDDR3 memory
• _ Advanced thermal management and thermal monitoring
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 Shader Model 3.0
• _ Full OpenGL support, including OpenGL 2.0
PowerMizer Technology
• _ Mobile power reduction technology unique the GeForce 6 Go family of GPUs
• _ Power & thermal management technology to deliver the longest battery life
• _ Advanced process technology delivers performance at lowest power consumption levels
• _ CLK, supply-VDD, thermal-throttling closed loop control mechanisms optimize "on the go" performance
Enables control of system levels components (such as CPU, display-panel, etc.) power consumption, for a balanced and complete notebook PC power savings
• _ SmartDimmer – technology to intelligently control and save display-panel power consumption 
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The Dell Inspiron XPS Gen 2 [url=javascript:winopen('image_popup.cfm?image=big_xps_gen2_1.JPG&articleid=648&t=a','hothardwareimage', 600,600);]
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We got to spend some time with Dell's new Inspiron XPS Gen 2 to test the NVIDIA GeForce Go 6800 Ultra. The new Inspiron XPS Gen 2, is a much more portable notebook than the original XPS. The Gen 2 is thinner, lighter (about 9lbs), doesn't generate as much heat, and is much more attractive than the first XPS notebook. There are green lights interspersed behind all of the grills, which make the unit glow when powered up and the lid is adorned with a brushed metal, rippled sheath. At the heart of this unit is an Intel Pentium M 2.13GHz processors, 1GB of DDR2 533 RAM, Intel's Mobile i915 Express chipset, and of course the NVIDIA GeForce Go 6800 Ultra. In this particular notebook, the GeForce Go 6800 Ultra's core is clocked at 450MHz and its 256MB of GDDR3 RAM is clocked at 550GHz (1.1GHz DDR). That makes the GeForce Go 6800 Ultra the second highest clocked NV4x based product we've ever tested. Only the elusive GeForce 6800 Ultra Extreme Edition, with its 600MHz (1.2GHz DDR) memory, is clocked higher.
The Inspiron XPS Gen 2 has a 17" LCD, with a native resolution of 1920x1200. We found this display to be surprisingly adept at interpolating lower-than-native resolutions. The typical blur associated with running an LCD below its native resolution wasn't very pronounced when viewing the Windows desktop and while gaming at lower resolutions, blurring was hardly noticeable at all.
