AMD Radeon HD 6870M vs ATI Radeon E4690 MXM

VS

AMD Radeon HD 6870M

ATI Radeon E4690 MXM

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6870M and 512MB VRAM Radeon E4690 MXM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870M 's Advantages

Released 1 years and 7 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 22.40GB/s)

480 additional rendering cores

ATI Radeon E4690 MXM 's Advantages

Lower TDP (30W vs 50W)

Score

Benchmark

FP32 (float)

Radeon HD 6870M +181%

1.08 TFLOPS

Radeon E4690 MXM

0.384 TFLOPS

Radeon HD 6870M

VS

Radeon E4690 MXM

Graphics Card

Jan 2011

Release Date

Jun 2009

Vancouver

Generation

Embedded

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-II

Clock Speeds

-

1000 MHz

Memory Clock

700 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

22.40GB/s

Render Config

10

Compute Units

4

-

800

Shading Units

320

40

TMUs

32

16

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

10.80 GPixel/s

Pixel Rate

4.800 GPixel/s

27.00 GTexel/s

Texture Rate

19.20 GTexel/s

-

1080 GFLOPS

FP32 (float)

384.0 GFLOPS

-

Board Design

50W

TDP

30W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Granville

GPU Name

RV730

Granville XT (216-0769024)

GPU Variant

RV730 XT E4690 (215-0729055)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.04 billion

Transistors

0.514 billion

166 mm²

Die Size

146 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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