Radeon HD 5670
The ATI Radeon HD 5670 is the world's first DirectX 11-compatible graphics accelerator in the sub-$100 price range. The video chip is based on an advanced 40nm process technology, includes 627 million transistors, 400 stream processors, 20 texture units, 8 ROPs, operates at a clock frequency of 775 MHz and has a processing power of 620 GFlops.
| Name | Radeon HD 5670 |
| Core | Redwood |
| Process technology (µm) | 40 |
| Transistors (million) | 627 |
| Core frequency | 725 |
| Memory frequency (DDR) | 1000(4000QDR) |
| Bus and memory type | GDDR5 128-bit |
| Bandwidth (Gb/s) | 65 |
| Unified shader blocks | 400 |
| Frequency of unified shader units | 775 |
| TMU per conveyor | 20 |
| ROP | 8 |
| Shader Model | 5.0 |
| Fill Rate (Mtex/s) | 10000 |
| DirectX | 11.0 |
| Memory | 512/1024 |
| Interface | PCIe 2.0 |
The chip structure is shown in more detail in the figure below.
There are two versions of the accelerator - with 512 MB and 1 GB of GDDR5 memory. The memory operates at a frequency of 1000 MHz (effective frequency is 4 GHz), and its bandwidth is 64 GB / s. From the interfaces in the photograph of the reference sample, we see D-Sub, DVI, HDMI. The typical level of power consumption of new items is 61 watts, and in idle mode is reduced to 14 watts.
Of the supported proprietary technologies, it is worth noting ATI Eyefinity, which allows you to organize multi-monitor configurations. The ATI Radeon HD 5670 has the ability to connect up to four monitors simultaneously. Thanks to ATI Stream technology, when playing flash videos in the Adobe Flash player, the load on the central processor is reduced by up to 50%, and video transcoding in CyberLink Espresso is also significantly accelerated.
Finally, we note that AMD plans to release several new products in February - the Radeon HD 5500 series accelerators, as well as the Radeon HD 5400. Radeon HD 5500 Series solutions will be made in a low-profile form factor and are aimed at small-format computers and HTPC systems. They will also support DirectX 11, ATI Eyefinity (up to three monitors) and feature low power consumption - less than 50 watts. Of the features of the Radeon HD 5450, the possibility of releasing solutions with passive cooling is noted.