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
Mobility Radeon HD 4870
ATI Mobility Radeon HD 4870: GPU Specs & Benchmarks