ATI Mobility Radeon HD 2600 XT vs ATI Mobility Radeon HD 3870 X2

VS

ATI Mobility Radeon HD 2600 XT

ATI Mobility Radeon HD 3870 X2

We compared two Mobile platform GPUs: 256MB VRAM Mobility Radeon HD 2600 XT and 512MB VRAM Mobility Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3870 X2 's Advantages

Released 1 years and 4 months late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (54.40GB/s vs 24.00GB/s)

200 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 2600 XT

0.163 TFLOPS

Mobility Radeon HD 3870 X2 +158%

0.422 TFLOPS

Mobility Radeon HD 2600 XT

VS

Mobility Radeon HD 3870 X2

Graphics Card

May 2007

Release Date

Sep 2008

M7x

Generation

M8x

Mobile

Type

Mobile

MXM-II

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

750 MHz

Memory Clock

850 MHz

Memory

256MB

Memory Size

512MB

GDDR3

Memory Type

GDDR3

128bit

Memory Bus

256bit

24.00GB/s

Bandwidth

54.40GB/s

Render Config

3

Compute Units

4

-

120

Shading Units

320

8

TMUs

16

4

ROPs

16

-

64 KB

L2 Cache

256 KB

-

Theoretical Performance

2.720 GPixel/s

Pixel Rate

10.56 GPixel/s

5.440 GTexel/s

Texture Rate

10.56 GTexel/s

-

163.2 GFLOPS

FP32 (float)

422.4 GFLOPS

-

FP64 (double)

84.48 GFLOPS

Board Design

Unknown

TDP

110W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

M76

GPU Name

M88

M76 XT-M (216XJBKA13FG)

GPU Variant

-

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

65 nm

Process Size

55 nm

0.39 billion

Transistors

0.666 billion

153 mm²

Die Size

192 mm²

Graphics Features

10.0 (10_0)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

N/A

OpenCL

N/A

Vulkan

N/A

-

4.0

Shader Model

4.1

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