AMD Radeon HD 6870M vs AMD Radeon HD 6970M

VS

AMD Radeon HD 6870M

AMD Radeon HD 6970M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6870M and 1024MB VRAM Radeon HD 6970M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870M 's Advantages

Lower TDP (50W vs 75W)

AMD Radeon HD 6970M 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 64.00GB/s)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6870M

1.08 TFLOPS

Radeon HD 6970M +20%

1.306 TFLOPS

Radeon HD 6870M

VS

Radeon HD 6970M

Graphics Card

Jan 2011

Release Date

Jan 2011

Vancouver

Generation

Vancouver

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-B (3.0)

Clock Speeds

-

1000 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

115.2GB/s

Render Config

10

Compute Units

12

-

800

Shading Units

960

40

TMUs

48

16

ROPs

32

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

10.80 GPixel/s

Pixel Rate

21.76 GPixel/s

27.00 GTexel/s

Texture Rate

32.64 GTexel/s

-

1080 GFLOPS

FP32 (float)

1306 GFLOPS

-

Board Design

50W

TDP

75W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Granville

GPU Name

Blackcomb

Granville XT (216-0769024)

GPU Variant

Blackcomb XT (216-0811000)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.04 billion

Transistors

1.7 billion

166 mm²

Die Size

212 mm²

Graphics Features

11.2 (11_0)

DirectX

11.2 (11_0)

4.4

OpenGL

4.4

1.2

OpenCL

1.2

N/A

Vulkan

N/A

-

5.0

Shader Model

5.0

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