ATI Radeon HD 4855 Graphics Card
Specifications
- Generation
- Radeon R700
- GPU model
- RV770
- Interface
- PCIe 2.0 x16
- GPU clock
- 575 MHz
- Memory size
- 512 MB
- DirectX
- 10.1 (10_1)
- Release date
- Jan 3rd, 2010
Graphics Processor
- GPU model
- RV770
- GPU variant
- RV770 PRO (215-0669065)
- Architecture
- TeraScale
- Foundry
- TSMC
- Manufacturing process
- 55 nm
- Number of transistors
- 956 million
- Die size
- 256 mm²
Graphics Card
- Release date
- Jan 3rd, 2010
- Generation
- Radeon R700
- Production
- End-of-life
- Interface
- PCIe 2.0 x16
- Predecessor
- Radeon R600
- Successor
- Evergreen
Clocks
- GPU clock
- 575 MHz
- Memory clock
- 900 MHz 3.6 Gbps effective
Memory Configuration
- Memory size
- 512 MB
- Memory type
- GDDR5
- Memory bus width
- 256 bit
- Bandwidth
- 115.2 GB/s
Render Configuration
- Shading units
- 640
- TMUs
- 32
- ROPs
- 16
- Compute units
- 8
- Cache L1
- 16 KB (per CU)
- Cache L2
- 256 KB
Performance
- Pixel rate
- 9.200 GPixel/s
- Texture rate
- 18.40 GTexel/s
- FP32 (float) performance
- 736.0 GFLOPS
- FP64 (double) performance
- 147.2 GFLOPS (1:5)
Dimensions & Outputs
- Slot width
- Dual-slot
- Length
- 220 mm 8.7 inches
- TDP
- 110 W
- Suggested PSU
- 300 W
- Outputs
- 1x DVI1x HDMI1x VGA
- Power connectors
- 1x 6-pin
API Support & Features
- DirectX
- 10.1 (10_1)
- OpenGL
- 3.3
- OpenCL
- 1.1
- Shader model
- 4.1
Drivers
Looking for Radeon HD 4855 driver download? We recommend Driver Booster program that can find, install, and keep up to date all drivers on Windows 10, 8.1, and 7 in one click!
