ATI Radeon™ HD 5450 GPU Feature Summary
292 million 40nm transistors
TeraScale 2 Unified Processing Architecture
80 Stream Processing Units
8 Texture Units
16 Z/Stencil ROP Units
4 Color ROP Units
DDR3/DDR2 memory interface
PCI Express 2.1 x16 bus interface
DirectX® 11 support
Shader Model 5.0
DirectCompute 11
Programmable hardware tessellation unit
Accelerated multi-threading
HDR texture compression
Order-independent transparency
OpenGL 3.2 support1
Image quality enhancement technology
Up to 12x multi-sample and super-sample anti-aliasing modes
Adaptive anti-aliasing
16x angle independent anisotropic texture filtering
128-bit floating point HDR rendering
ATI Eyefinity multi-display technology2,3
Three independent display controllers
Drive up to three displays simultaneously with independent resolutions, refresh rates, color controls, and video overlays
Display grouping
Combine multiple displays to behave like a single large display
ATI Stream acceleration technology
OpenCL Support1
DirectCompute 11
Accelerated video encoding, transcoding, and upscaling4,5
Native support for common video encoding instructions
ATI CrossFireX™ multi-GPU technology6
Dual GPU scaling
ATI Avivo HD Video & Display technology7
UVD 2 dedicated video playback accelerator
Advanced post-processing and scaling8
Dynamic contrast enhancement and color correction9
Brighter whites processing (blue stretch)10
Independent video gamma control10
Dynamic video range control
Support for H.264, VC-1, MPEG-2, and Adobe Flash11
Dual-stream (HD+SD) playback support12,13
DXVA 1.0 & 2.0 support
Integrated dual-link DVI output with HDCP14
Max resolution: 2560x160015
Integrated DisplayPort output
Max resolution: 2560x160015
Integrated HDMI 1.3 output with Deep Color, xvYCC wide gamut support, and high bit-rate audio
Max resolution: 1920x120015
Integrated VGA output
Max resolution: 2048x153615
3D stereoscopic display/glasses support16
Integrated HD audio controller
Output protected high bit rate 7.1 channel surround sound over HDMI with no additional cables required
Supports AC-3, AAC, Dolby TrueHD and DTS Master Audio formats
ATI PowerPlay™ power management technology7
Dynamic power management with low power idle state
Certified drivers for Windows 7, Windows Vista, and Windows XP
Speeds & Feeds
Engine clock speed: 650 MHz
Processing power (single precision): 104 GigaFLOPS
Polygon throughput: 650M polygons/sec
Data fetch rate (32-bit): 20.8 billion fetches/sec
Texel fill rate (bilinear filtered): 5.2 Gigatexels/sec
Pixel fill rate: 2.6 Gigapixels/sec
Anti-aliased pixel fill rate: 10.4 Gigasamples/sec
Memory clock speed: 400 MHz DDR2 and up to 800 MHz DDR3
Memory data rate: 0.8 Gbps DDR2 and up to 1.6 Gbps DDR3
Memory bandwidth: 6.4 GB/sec (DDR2) and up to 12.8 GB/sec (DDR3)
Typical power: 19.1Watts
Idle power: 6.4Watts
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ATI Radeon™ HD 4870 Series GPU Specifications
956 million transistors on 55nm fabrication process
PCI Express 2.0 x16 bus interface
256-bit GDDR3/4/5 memory interface
Microsoft® DirectX® 10.1 support
Shader Model 4.1
32-bit floating point texture filtering
Indexed cube map arrays
Independent blend modes per render target
Pixel coverage sample masking
Read/write multi-sample surfaces with shaders
Gather4 texture fetching
Unified Superscalar Shader Architecture
800 stream processing units
Dynamic load balancing and resource allocation for vertex, geometry, and pixel shaders
Common instruction set and texture unit access supported for all types of shaders
Dedicated branch execution units and texture address processors
128-bit floating point precision for all operations
Command processor for reduced CPU overhead
Shader instruction and constant caches
Up to 160 texture fetches per clock cycle
Up to 128 textures per pixel
Fully associative multi-level texture cache design
DXTC and 3Dc+ texture compression
High resolution texture support (up to 8192 x 8192)
Fully associative texture Z/stencil cache designs
Double-sided hierarchical Z/stencil buffer
Re-Z, and Z Range optimization
Lossless Z & stencil compression (up to 128:1)
Lossless color compression (up to 8:1)
Up to 8 render targets (MRTs) with anti-aliasing
Accelerated physics processing
Dynamic Geometry Acceleration
High performance vertex cache
Programmable tessellation unit
Accelerated geometry shader path for geometry amplification
Memory read/write cache for improved stream output performance
Anti-aliasing features
Multi-sample anti-aliasing (2, 4, or 8 samples per pixel)
Up to 24x Custom Filter Anti-Aliasing (CFAA) for improved quality
Adaptive super-sampling and multi-sampling
Gamma correct
Super AA (ATI CrossFireX™ configurations only)
All anti-aliasing features compatible with HDR rendering
Texture filtering features
2x/4x/8x/16x high quality adaptive anisotropic filtering modes (up to 128 taps per pixel)
128-bit floating point HDR texture filtering
sRGB filtering (gamma/degamma)
Percentage Closer Filtering (PCF)
Depth & stencil texture (DST) format support
Shared exponent HDR (RGBE 9:9:9:5) texture format support
OpenGL 3.1 support
ATI Avivo™ HD Video and Display Platform6
Unified Video Decoder 2 (UVD 2) for H.264/AVC, VC-1, and MPEG-2 video formats
High definition (HD) playback of Blu-ray and HD DVD video
Dual stream (HD+SD) playback support
DirectX Video Acceleration 1.0 & 2.0 support
Support for BD-Live certified applications
Hardware DivX and MPEG-1 video decode acceleration
Accelerated video transcoding & encoding for H.264 and MPEG-2 formats
ATI Avivo Video Post Processor6
Color space conversion
Chroma subsampling format conversion
Horizontal and vertical scaling
Gamma correction
Advanced vector adaptive per-pixel de-interlacing
De-blocking and noise reduction filtering
Detail enhancement
Color vibrance and flesh tone correction
Inverse telecine (2:2 and 3:2 pull-down correction)
Bad edit correction
Enhanced DVD upscaling (SD to HD)
Automatic dynamic contrast adjustment
Two independent display controllers
Drive two displays simultaneously with independent resolutions, refresh rates, color controls and video overlays for each display
Full 30-bit display processing
Programmable piecewise linear gamma correction, color correction, and color space conversion
Spatial/temporal dithering provides 30-bit color quality on 24-bit and 18-bit displays
High quality pre- and post-scaling engines, with underscan support for all display outputs
Content-adaptive de-flicker filtering for interlaced displays
Fast, glitch-free mode switching
Hardware cursor
Two integrated dual-link DVI display outputs
Each supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI) or 2560x1600 (dual-link DVI)2
Each includes a dual-link HDCP encoder with on-chip key storage for high resolution playback of protected content3
Two integrated 400 MHz 30-bit RAMDACs
Each supports analog displays connected by VGA at all resolutions up to 2048x15362
DisplayPort output support
24- and 30-bit displays at all resolutions up to 2560x16002
HDMI output support
All display resolutions up to 1920x10802
Integrated HD audio controller with support for stereo and multi-channel (up to 7.1) audio formats, including AC-3, AAC, DTS, DTS-HD & Dolby True-HD4, enabling a plug-and-play audio solution over HDMI
Integrated AMD Xilleon™ HDTV encoder
Provides high quality analog TV output (component/S-video/composite)
Supports SDTV and HDTV resolutions
Underscan and overscan compensation
Seamless integration of pixel shaders with video in real time
VGA mode support on all display outputs
ATI PowerPlay™ Technology5
Advanced power management technology for optimal performance and power savings
Performance-on-Demand
Clock and memory speed throttling
Voltage switching
Dynamic clock gating
Central thermal management – on-chip sensor monitors GPU temperature and triggers thermal actions as required
ATI CrossFireX™ Multi-GPU Technology
Scale up rendering performance and image quality with two, three, or four GPUs
Integrated compositing engine
High performance dual channel bridge interconnect1
