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ATi Mobility Radeon HD 4870 1 GB

ATi Mobility Radeon HD 4870 1 GB Image ATI M98 Image

Graphics Processor

GPU Name: M98
GPU Variant: XT
Process Size: 55 nm
Transistors: 956 million
Die Size: 256 mm²

Graphics Card

Released: Jan 9th, 2009
Production Status: End-of-life
Bus Interface: PCIe 2.0 x16

Clock Speeds

GPU Clock: 550 MHz
Memory Clock: 888 MHz
700 MHz (-21%)
1776 MHz effective
2800 MHz effective


Memory Size: 512 MB
1024 MB
Memory Type: GDDR3
Memory Bus: 256 bit
Bandwidth: 56.8 GB/s
89.6 GB/s

Render Config

Shading Units: 800
TMUs: 40
ROPs: 16
Compute Units: 10
Pixel Rate: 8.80 GPixel/s
Texture Rate: 22.0 GTexel/s
Floating-point performance: 880.0 GFLOPS

Graphics Features

DirectX: 10.1
OpenGL: 3.3
OpenCL: n/a
Shader Model: 4.1


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Our review database contains 2 reviews of the Mobility Radeon HD 4870 1 GB.

M98 GPU Notes


Other retail boards based on this design

Name GPU Clock Memory Clock Other Changes
ATi Mobility Radeon HD 4870 1 GB 550 MHz 700 MHz 1024 MB, GDDR5