Product Features

• 1GB GDDR5 memory
  
• ATI Eyefinity technology with support for up to three displays
  
• ATI Stream technology
  
• Designed for DirectCompute 11 and OpenCL
  
• Accelerated Video Transcoding (AVT)(2,5)
  
• Compliant with DirectX® 11 and earlier revisions
  
• Supports OpenGL 3.1
  
• Dual-mode ATI CrossFireX™ technology support for highly scalable performance
  
• ATI Avivo™ HD video and display technology
  
• Dynamic power management with ATI PowerPlay™ technology
  
• DL-DVI, DL-DVI, DisplayPort, HDMI
  
• PCI Express® 2.0 support

Product Specifications

The Radeon HD 5000 series launched last year and was the first to feature the DirectX 11 technology and Eyefinity. Announced products in this series were the 5850 and 5870, for the high-end segment and their code name is “Cypress”.

On October 13, 2009, the “Juniper“ GPUs were launched, aimed at the mainstream segment; they can support up to 6 display outputs. The 5770 does have 800 stream cores and its little brother, the 5750, has 720 stream cores. Compared with the 5800 series which have 256bit bus, both 5770 and 5750 do have a 128bit bus; this cuts the memory bandwidth in half, to 76.8GB/sec.

The RADEON HD 5770 has 10 SIMD cores clocked at 850MHz; each SIMD core does have 16 five-way superscalar shader processors, four texture units, a 32KB local data store and 8KB L1 texture cache.




AMD have now covered all the market segments, beginning with the low-end RADEON HD 5450 to the high end dual-chip RADEON HD 5970.

The latest GPUs from AMD fully support DirectX11 instructions which include GPGPU (DirectCompute 11), tessellation and improved multi-threading; they also come with Shader Model 5, better shadows and HDR texture compression.

Tesselation, as described on the Unigine website, is a “scalable technology aimed for automatic subdivision of polygons into smaller and finer pieces, so that developers can gain a more detailed look of their games almost free of charge in terms of performance. Thanks to this procedure, the elaboration of the rendered image finally approaches the boundary of veridical visual perception: the virtual reality is vivified at your fingertips delivering engaging gaming experience.”

Here is a modelled house inside the Unigine Heaven benchmark, without and with the tessellation feature enabled:

The multi-threaded rendering is similar to the techniques applied for the current CPUs. If a shader or an instruction has to be queued up, the process creates a delay. The current GPUs can now process data completely threaded, which bring a better overall performance.

The DirectCompute feature allows access to the GPU for stream computing; it shares a range of computational interfaces with its competitors: OpenCL and CUDA.

Eyefinity is an advanced multiple-display technology from AMD which enables a single GPU to support up to six independent display outputs simultaneously. The six high-resolution displays can be operated simultaneously and independently, configured in various combinations of landscape and portrait orientations.

We can group multiple monitors into a large integrated display surface, enabling windowed and full screen 3D applications, images and video to span across multiple displays as one desktop workspace. ATI Eyefinity supports Duplicated Mode operation (PC desktop cloned on multiple displays) and Extended Mode (PC desktop extended across multiple displays).