AMD Radeon HD 6870M vs ATI Mobility Radeon HD 2600 XT Mac Edition

VS

AMD Radeon HD 6870M

ATI Mobility Radeon HD 2600 XT Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6870M and 256MB VRAM Mobility Radeon HD 2600 XT Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870M 's Advantages

Released 3 years and 6 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (64.00GB/s vs 21.92GB/s)

680 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6870M +650%

1.08 TFLOPS

Mobility Radeon HD 2600 XT Mac Edition

0.144 TFLOPS

Radeon HD 6870M

VS

Mobility Radeon HD 2600 XT Mac Edition

Graphics Card

Jan 2011

Release Date

Jul 2007

Vancouver

Generation

M7x

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-II

Clock Speeds

-

1000 MHz

Memory Clock

685 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

21.92GB/s

Render Config

10

Compute Units

3

-

800

Shading Units

120

40

TMUs

8

16

ROPs

4

-

8 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

64 KB

-

Theoretical Performance

10.80 GPixel/s

Pixel Rate

2.400 GPixel/s

27.00 GTexel/s

Texture Rate

4.800 GTexel/s

-

1080 GFLOPS

FP32 (float)

144.0 GFLOPS

-

Board Design

50W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

Granville

GPU Name

M76

Granville XT (216-0769024)

GPU Variant

M76 XT-M (216XJBKA13FG)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

65 nm

1.04 billion

Transistors

0.39 billion

166 mm²

Die Size

153 mm²

Graphics Features

11.2 (11_0)

DirectX

10.0 (10_0)

4.4

OpenGL

3.3

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

4.0

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