The Lull Before the Launch
With both ATI and NVIDIA planning to release their next generation graphics processors soon, there has not been that much movement in the graphics card market as of late. Yes, ATI has introduced its CrossFire technology to counter NVIDIA's SLI but they are not found in retail channels yet. So what do graphics card companies do while working on the next technological breakthrough? Answer: they double the memory size of their existing products. It has happened in the past (
RADEON 9800 PRO 256MB anyone?), it is happened very recently (
the relatively new RADEON X800 XL 512MB) and it will likely happen again. Size does matter; with the profusion of all sorts of numbers on the packaging of a graphics card, some consumers may be confused, leading them to fall back on their own assumptions such as this:-
"512MB is surely better than 256MB, right? It's twice as much and costs a bomb! Of course it MUST be better". Other more knowledgeable buyers may just desire that extra memory for the bragging rights of having the most powerful graphics card ever available (period). But how true are those assumptions?
Is more always better? Leadtek's 512MB GeForce 6800 Ultra.
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There is a definite increase in performance for typical applications going from 128MB to 256MB now, given that the graphics controller is of midrange standard at least. However as we have seen in
our review of the Sapphire RADEON X800 XL 512MB
, the performance gains may not be as impressive as the frame buffer size seems to indicate. While the 512MB version of the ATI RADEON X800 XL managed to grab the headlines from NVIDIA for a while - which may well be the whole point of the product - there are already a few 512MB versions of NVIDIA's top range GeForce 6800 Ultra in the market for a little while now. Today, we will be looking at one such rare card, the Leadtek WinFast PX6800 Ultra TDH 512MB. Below, we list its technical specifications:
Leadtek WinFast PX6800 Ultra TDH 512MB Technical Specifications
| Graphics
Engine |
- NVIDIA GeForce 6800
Ultra GPU
- Stock 2D GPU clock
= 400MHz
- Stock 3D GPU clock
= 400MHz
- 16 pixel rendering
pipelines
- 6 vertex pipelines
(geometry engines)
- 256-bit DDR3
memory controller
- CineFX
3.0 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
- 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
- UltraShadow II
Technology (accelerates shadow
computations)
- Intellisample 3.0
Technology
- 16x Anisotropic
Filtering
- Adaptive Texture
Filtering
- Rotated Grid
Antialiasing
- Fast antialiasing
and compression performance
- Loss-less Color,
Texture and Z-Data Compression
algorithms (in real time)
- Fast Z-clear
- High-resolution
Compression Technology (HCT) increases
performance at high resolutions.
- 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
- Integrated
NTSC/PAL TV encoder support resolutions up
to 1024x768 with built-in Macrovision copy protection
- DVD and HDTV-ready
MPEG-2 decoding up to 1920x1080i
resolutions
- Dual 400MHz
RAMDACs that support resolutions of
2048x1536@85Hz
- Dual DVO ports for
interfacing external TMDS
transmitters and external TV/HDTV encoder
- Microsoft Video
Mixing Renderer (VMR)
- nView
Multi-display Technology
- Digital Vibrance
Control (DVC) 3.0
- NVIDIA High-Precision
Dynamic-Range (HPDR) Technology
- Advanced thermal
monitoring and thermal management
|
| Graphics
Memory |
- 512MB Graphic DDR3
SDRAM
- Default memory clock =
1050MHz DDR
- 256-bit memory
interface
|
| RAMDAC
|
- Dual integrated 10-bit
per channel 400 MHz DACs that
support resolutions of 2048x1536@85Hz
- Integrated 165 MHz
TMDS transmitter (DVI 1.0 compliant and
HDCP ready)
|
| Connectors |
- 1 x S-Video output
- 2 x DVI-I connectors
|
| Drivers
& Software
|
- Driver support for
Windows 98 / Me / 2000 / XP
- Splinter Cell: Pandora
Tomorrow
- Prince of Persia:
Warrior Within
- WinFast DVD
|
| Other
Information |
- 2 free PCI Express
slots required
- Minimum 350W PSU
required
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