AMD Radeon HD 6970M vs AMD Radeon HD 6490M Mac Edition

VS

AMD Radeon HD 6970M

AMD Radeon HD 6490M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6970M and 256MB VRAM Radeon HD 6490M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970M 's Advantages

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (115.2GB/s vs 25.41GB/s)

800 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6970M +444%

1.306 TFLOPS

Radeon HD 6490M Mac Edition

0.24 TFLOPS

Radeon HD 6970M

VS

Radeon HD 6490M Mac Edition

Graphics Card

Jan 2011

Release Date

May 2011

Vancouver

Generation

Vancouver

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

794 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

115.2GB/s

Bandwidth

25.41GB/s

Render Config

12

Compute Units

2

-

960

Shading Units

160

48

TMUs

8

32

ROPs

4

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

21.76 GPixel/s

Pixel Rate

3.000 GPixel/s

32.64 GTexel/s

Texture Rate

6.000 GTexel/s

-

1306 GFLOPS

FP32 (float)

240.0 GFLOPS

-

Board Design

75W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Processor

Blackcomb

GPU Name

Seymour

Blackcomb XT (216-0811000)

GPU Variant

Seymour XTX M2 (216-0809000)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.7 billion

Transistors

0.37 billion

212 mm²

Die Size

67 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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