Report an Error

ATI Mobility Radeon HD 4870 X2

ATI Mobility Radeon HD 4870 X2 Image ATI M98 Image
The Mobility Radeon HD 4870 X2 was a graphics card by ATI, launched in January 2009. Built on the 55 nm process, and based on the M98 graphics processor, in its XT variant, the card supports DirectX 10.1. The M98 graphics processor is an average sized chip with a die area of 256 mm² and 956 million transistors. Mobility Radeon HD 4870 X2 combines two graphics processors to increase performance. It features 800 shading units, 40 texture mapping units and 16 ROPs per GPU. ATI has placed 2,048 MB GDDR5 memory on the card, which are connected using a 256-bit memory interface per GPU (each GPU manages 1,024 MB). The GPU is operating at a frequency of 550 MHz, memory is running at 700 MHz.
We recommend the ATI Mobility Radeon HD 4870 X2 for gaming with highest details at resolutions up to, and including, 1680x1050.
Its power draw is not exactly known. Mobility Radeon HD 4870 X2 is connected to the rest of the system using a PCIe 2.0 x16 interface.

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: 700 MHz
2800 MHz effective

Memory

Memory Size: 1024 MB x2
Memory Type: GDDR5
Memory Bus: 256 bit x2
Bandwidth: 89.6 GB/s x2

Render Config

Shading Units: 800 x2
TMUs: 40 x2
ROPs: 16 x2
Compute Units: 10 x2
Pixel Rate: 8.80 GPixel/s x2
Texture Rate: 22.0 GTexel/s x2
Floating-point performance: 880.0 GFLOPS x2

Graphics Features

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

VGA BIOS

Find graphics card BIOS for this card.

GPU-Z Validation

Find GPU-Z validations for this card.

Reviews

Our review database contains 2 reviews of the Mobility Radeon HD 4870 X2.

M98 GPU Notes

RV770