处理器
| 处理器频率 |
625 MHz |
| 图形适配器随机存取存储器数字/模拟转换器 |
400 MHz |
| 图形处理器系列 |
AMD |
| 流处理器 |
800 |
内存参数
| 图形适配器内存类型 |
GDDR3 |
| 数据宽度 |
256 bit |
| 内存时钟速度 |
1900 MHz |
| 独立显卡适配器內存 |
1 GB |
性能
| DirectX版本 |
10.1 |
| OpenGL版本 |
2.0 |
| 最高着色模型版本 |
4.1 |
| HDCP |
Y |
端口 & 界面
| 接口类型 |
PCI Express 2.0 |
| DVI-I接口数量 |
1 |
| VGA（D-SUB）端口数量 |
1 |
Radeon HD4850 PCS 1024MB, GDDR3, PCI-E, 625MHz, DirectX 10.1
956 million transistors on 55nm fabrication process
PCI Express 2.0 x16 bus interface
256-bit GDDR3
MicrosoftR DirectXR 10.1 support
- ShaderModel 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;
- Early Z test, Re-Z, Z Range optimization, and Fast Z Clear;
- Lossless Z & stencil compression (up to 128:1);
- Lossless color compression (up to 8:1);
- 8 render targets (MRTs) with anti-aliasing support;
- Accelerated physics processing.
Dynamic Geometry Acceleration
- High performance vertex cache;
- Programmable tessellation unit;
- Accelerated geometry shaderpath 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 CrossFireXTM configurations only);
- All anti-aliasing features compatible with HDR renderin.
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 2.0 support
ATI AvivoTM HD Video and Display Platform
