ATI Mobility Radeon HD 4870: GPU Specs & Benchmarks
The Mobility Radeon HD 4870 is a graphics card by ATI, built on the 55 nm process and based on the M98 graphics processor (GPU). The video card specifications and performance tests (benchmarks) are listed below.
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Graphics Processor (GPU)
- GPU Name
- M98
- Model number
- M98 XT
(216-0732023) - Architecture
- TeraScale
- Foundry
- TSMC
- Process Size
- 55 nm
- Transistors
- 956 million
- Die Size
- 256 mm²
Graphics Card
- Release Date
- Jan 9th, 2009
- Family
- M9x
(Mobility HD 4800) - Production
- End-of-life
- Predecessor
- M8x
- Bus Interface
- PCIe 2.0 x16
Memory
- Memory Size
- 512 MB
- Memory Type
- GDDR3
- Memory Bus
- 256 bit
- Bandwidth
- 56.83 GB/s
Performance
- Pixel fillrate
- 8.800 GPixel/s
- Texture fillrate
- 22.00 GTexel/s
- FP32 (float) performance
- 880.0 GFLOPS
- FP64 (double) performance
- 176.0 GFLOPS (1:5)
Clock Speeds
- Memory Clock
- 888 MHz
1776 Mbps effective - GPU Clock
- 550 MHz
Render Config
- Shading Units
- 800
- TMUs
- 40
- ROPs
- 16
- Compute Units
- 10
- L1 Cache
- 16 KB (per CU)
- L2 Cache
- 256 KB
Board Design
- Thermal design power (TDP)
- unknown
- Display Connectors
- No outputs
API support
- DirectX
- 10.1 (10_1)
- OpenGL
- 3.3
- OpenCL
- 1.1
- Vulkan
- N/A
- Shader Model
- 4.1