34 Powercolor X1900GT

With the competitive pace at which graphics cards for
different segments of the market debut and move, the prices of these cards move
along quite dynamically and a card that filled the USD$ 350 spot may be filling a
USD$ 250 spot in a few months time. The USD$ 330-$ 350 spot strikes a very good
price/performance chord with the power-users and gaming junkies… and ATi saw
it fitting for them to try to secure this segment with the X1900GT. We take a
look at Powercolor’s offering of this new flavor.

With the competitive pace at which graphics cards for
different segments of the market debut and move, the prices of these cards move
along quite dynamically and a card that filled the USD$ 350 spot may be filling a
USD$ 250 spot in a few months time. The USD$ 330-$ 350 spot strikes a very good
price/performance chord with the power-users and gaming junkies… and ATi saw
it fitting for them to try to secure this segment with the X1900GT. We take a
look at Powercolor’s offering of this new flavor.    

1 Powercolor X1900GT

The new insertion in the X1900 series of Graphics Cards come in a reflective
flashy red package box. With all the cool features listed right on the cover:
Cross-Fire support, ATi AVIVO, HDTV Ready and Shader Model 3.0 support.

 

10 Powercolor X1900GT

 

style="BORDER-COLLAPSE: collapse"
bordercolor=#111111 cellspacing=0 cellpadding=2
width="79%" border=1>

color=#FFFFFF
size=2>Specification/Model

bgcolor=#003366 height="33">

color=#FFFFFF face=Arial
style="FONT-SIZE: 9pt">ATi X1800XL

bgcolor=#003366 height="33">


color=#D73552 face=Arial>ATi X1900GT

bgcolor=#003366 height="33">

color=#FFFFFF face=Arial
style="FONT-SIZE: 9pt">ATi X1900XTX

bgcolor=#003366 height="33">

color=#FFFFFF face=Arial
style="FONT-SIZE: 9pt">GeForce 7600GT

bgcolor=#003366 height="33">

color=#FFFFFF face=Arial
style="FONT-SIZE: 9pt">GeForce 7900GT

bgcolor=#003366 height="33">

color=#FFFFFF face=Arial
style="FONT-SIZE: 9pt">GeForce 7900GTX

style="FONT-SIZE: 9pt" face=Arial>Pixel Pipelines

style="FONT-SIZE: 9pt">16

36

48

style="FONT-SIZE: 9pt">12

style="FONT-SIZE: 9pt">24

style="FONT-SIZE: 9pt">24

face=Arial class=text style="FONT-SIZE: 9pt">Geometry
Pipelines

style="FONT-SIZE: 9pt">8

style="FONT-SIZE: 9pt">8

style="FONT-SIZE: 9pt">8

style="FONT-SIZE: 9pt">5

style="FONT-SIZE: 9pt">8

style="FONT-SIZE: 9pt">8

face=Arial class=text style="FONT-SIZE: 9pt">Core
Clock

500 face=Arial class=text
style="FONT-SIZE: 9pt">MHz

57 face=Arial class=text
style="FONT-SIZE: 9pt">5MHz

face=Arial class=text
style="FONT-SIZE: 9pt">650MHz

face=Arial class=text
style="FONT-SIZE: 9pt">560MHz

face=Arial class=text
style="FONT-SIZE: 9pt">450MHz

6 face=Arial class=text
style="FONT-SIZE: 9pt">50MHz

face=Arial class=text style="FONT-SIZE: 9pt">Memory
Clock (DDR)

style="FONT-SIZE: 9pt">500MHz

600 style="FONT-SIZE: 9pt">MHz

750 style="FONT-SIZE: 9pt">MHz

style="FONT-SIZE: 9pt">700MHz

style="FONT-SIZE: 9pt">660MHz

80 style="FONT-SIZE: 9pt">0MHz

 


Features
• 384 million transistors on 90nm fabrication process
• 36 pixel shader processors
• 8 vertex shader processors
• 256-bit 8-channel GDDR3 memory interface
• Native PCI Express x16 bus interface

Ring Bus Memory Controller
• 512-bit internal ring bus for memory reads
• Fully associative texture, color, and Z/stencil cache designs
• Hierarchical Z-buffer with Early Z test
• Lossless Z Compression (up to 48:1)
• Fast Z-Buffer Clear
• Optimized for performance at high display resolutions, including widescreen
HDTV resolutions

Ultra-Threaded Shader Engine
• Support for Microsoft® DirectX® 9.0 Shader Model 3.0 programmable vertex and
pixel shaders in hardware
• Full speed 128-bit floating point processing for all shader operations
• Up to 512 simultaneous pixel threads
• Dedicated branch execution units for high performance dynamic branching and
flow control
• Dedicated texture address units for improved efficiency
• 3Dc+ texture compression o High quality 4:1 compression for normal maps and
two-channel data formats
• High quality 2:1 compression for luminance maps and single-channel data
formats
• Complete feature set also supported in OpenGL® 2.0

Advanced Image Quality Features

• 64-bit floating point HDR rendering supported throughout the pipeline
• 32-bit integer HDR (10:10:10:2) format supported throughout the pipeline
• 2x/4x/6x Anti-Aliasing modes
• 2x/4x/8x/16x Anisotropic Filtering modes
• High resolution texture support (up to 4k x 4k)


Avivo™
Video and Display Engine

• High performance programmable video processor
• Accelerated MPEG-2, MPEG-4, DivX, WMV9, VC-1, and

H.264 decoding
(including DVD/HD-DVD/Blu-ray playback), encoding &
transcoding
• DXVA support
• De-blocking and noise reduction filtering
• Motion compensation, IDCT, DCT and color space conversion
• Vector adaptive per-pixel de-interlacing
• 3:2 pulldown (frame rate conversion)
• Seamless integration of pixel shaders with video in real time
• HDR tone mapping acceleration
• Maps any input format to 10 bit per channel output
• Flexible display support
• Dual integrated dual-link DVI transmitters
• DVI 1.0 / HDMI compliant and HDCP ready
• Dual integrated 10 bit per channel 400 MHz DACs
• 16 bit per channel floating point HDR and 10 bit per channel DVI output
• Programmable piecewise linear gamma correction, color correction, and color
space conversion (10 bits per color)
• Complete, independent color controls and video overlays for each display
• High quality pre- and post-scaling engines, with underscan support for all
outputs
• Content-adaptive de-flicker filtering for interlaced displays
• Xilleon™ TV encoder for high quality analog output
• YPrPb component output for direct drive of HDTV displays
• Spatial/temporal dithering enables 10-bit color quality on 8-bit and 6-bit
displays
• Fast, glitch-free mode switching
• VGA mode support on all outputs
• Compatible with ATI TV/Video encoder products, including Theater 550

CrossFire™
• Multi-GPU technology
• Four modes of operation:
• Alternate Frame Rendering (maximum performance)
• Supertiling (optimal load-balancing)
• Scissor (compatibility)
• Super AA 8x/10x/12x/14x (maximum image quality)

Power supply notes :
• Connection to the system power supply is required:
  • 450-Watt power supply or greater, 30 Amps on 12 volt rail recommended
(assumes fully loaded system)
  • PCI Express compliant power supply (recommended). Connect directly to the
power supply with a 6 pin PCI Express power connector
• For CrossFire™: 550 watt power supply or greater, 38 Amps on 12 volt rail