ATI Radeon X1K Refresh: X1950 XTX, X1900 XT 256MB, X1650 Pro, and X1300 XT

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Radeon X1300 XT: Entry-Level

The last addition to ATI's Radeon X1K family of card being announced today is the Radeon X1300 XT.  Although this card's naming convention puts it in the same league as the X1300 Pro, its actually based on the same GPU used on the Radeon X1600 family of cards.

Sapphire Radeon X1300 XT

ATI Radeon X1300 XT
Features & Specifications
- 157 million transistors on 90nm fabrication process
- Dual-link DVI
- Twelve pixel shader processors
- Five vertex shader processors
- 128-bit 4-channel DDR/DDR2/GDDR3 memory interface
- Native PCI Express x16 bus interface
o AGP 8x configurations also supported with AGP-PCI-E external bridge chip
- Dynamic Voltage Control
Ring Bus Memory Controller
- 256-bit internal ring bus for memory reads
- Programmable intelligent arbitration logic
- 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
- Z/stencil cache optimized for real-time shadow rendering
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 128 simultaneous pixel threads
- Dedicated branch execution units for high performance dynamic branching and flow
- Dedicated texture address units for improved efficiency
- 3Dc+ texture compression
o High quality 4:1 compression for normal maps and two-channel data formats
o High quality 2:1 compression for luminance maps and single-channel data formats
- Multiple Render Target (MRT) support
- Render to vertex buffer support
- Complete feature set also supported in OpenGL 2.0
Advanced Image Quality Features
- 64-bit floating point HDR rendering supported throughout the pipeline
o Includes support for blending and multi-sample anti-aliasing
- 32-bit integer HDR (10:10:10:2) format supported throughout the pipeline
o Includes support for blending and multi-sample anti-aliasing
- 2x/4x/6x Anti-Aliasing modes
- Multi-sample algorithm with gamma correction, programmable sparse sample patterns,
and centroid sampling
o New Adaptive Anti-Aliasing feature with Performance and Quality modes
o Temporal Anti-Aliasing mode
- Lossless Color Compression (up to 6:1) at all resolutions, including widescreen HDTV
- 2x/4x/8x/16x Anisotropic Filtering modes
o Up to 128-tap texture filtering
o Adaptive algorithm with Performance and Quality options
- High resolution texture support (up to 4k x 4k)
Avivo Video and Display Platform
- High performance programmable video processor
- Accelerated MPEG-2, MPEG-4, DivX, WMV9, VC-1, and H.264 decoding and transcoding
o DXVA support
o De-blocking and noise reduction filtering
o Motion compensation, IDCT, DCT and color space conversion
o Vector adaptive per-pixel de-interlacing
o 3:2 pulldown (frame rate conversion)
- Seamless integration of pixel shaders with video in real time
- HDR tone mapping acceleration
o Maps any input format to 10 bit per channel output
- Flexible display support
o DVI 1.0 compliant / HDMI interoperable
o Dual integrated 10 bit per channel 400 MHz DACs
o 16 bit per channel floating point HDR and 10 bit per channel DVI output
o Programmable piecewise linear gamma correction, color correction, and color space
conversion (10 bits per color)
o Complete, independent color controls and video overlays for each display
o High quality pre- and post-scaling engines, with underscan support for all outputs
o Content-adaptive de-flicker filtering for interlaced displays
o Xilleon TV encoder for high quality analog output
o YPrPb component output for direct drive of HDTV displays*
o Spatial/temporal dithering enables 10-bit color quality on 8-bit and 6-bit displays
o Fast, glitch-free mode switching
o VGA mode support on all outputs
o Drive two displays simultaneously with independent resolutions and refresh rates
- Compatible with ATI TV/Video encoder products, including Theater 550
- Multi-GPU technology
- Four modes of operation:
o Alternate Frame Rendering (maximum performance)
o Supertiling (optimal load-balancing)
o Scissor (compatibility)
o Super AA 8x/10x/12x/14x (maximum image quality)


Radeon X1300 XT


Like the cards in the X1600 family, the Radeon X1300 XT is equipped with a GPU that's outfitted with 12-pixel shader processors, 5-vertex shader processors, dual-link DVI outputs (although cards will have DB15 / DVI output configurations), a single-slot cooler, and a 128-bit 4-channel memory interface. Reference Radeon X1300 XT GPUs will be clocked at 500MHz and their memory will be clocked at 800MHz, which essentially makes the card equivalent to a Radeon X1600 Pro.

The Radeon X1300 XT we received for testing is built by Sapphire Tech, one of ATI's premiere board partners. The Sapphire Radeon X1300 XT is very similar to the X1650 Pro pictured on the previous page, but Sapphire's 1300 XT has a different cooler, lower core GPU and memory clocks, and the bundle didn't include a composite video cable.  But please note, the Sapphire X1300 XT "Overclock Edition" pictured here has its GPU clocked at 575MHz and it's outfitted with 1.38GHz (DDR) memory, which will make it much faster than "standard" Radeon X1300 XT cards.

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Tags:  ATI, Radeon, x1, ATI Radeon, x16, refresh, XT, pro, and, K

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