AMD Radeon HD 7970M vs AMD Radeon HD 6990M

VS

AMD Radeon HD 7970M

AMD Radeon HD 6990M

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7970M and 2GB VRAM Radeon HD 6990M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970M 's Advantages

Released 9 months late

Larger VRAM bandwidth (153.6GB/s vs 115.2GB/s)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7970M +35%

2.176 TFLOPS

Radeon HD 6990M

1.602 TFLOPS

Radeon HD 7970M

VS

Radeon HD 6990M

Graphics Card

Apr 2012

Release Date

Jul 2011

London

Generation

Vancouver

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-B (3.0)

Clock Speeds

-

1200 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

115.2GB/s

Render Config

20

Compute Units

14

-

1280

Shading Units

1120

80

TMUs

56

32

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

22.88 GPixel/s

68.00 GTexel/s

Texture Rate

40.04 GTexel/s

-

2.176 TFLOPS

FP32 (float)

1.602 TFLOPS

136.0 GFLOPS

FP64 (double)

-

Board Design

100W

TDP

100W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Wimbledon

GPU Name

Blackcomb

Wimbledon XT (216-0836036)

GPU Variant

Blackcomb XTX (216-0811030)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

1.7 billion

212 mm²

Die Size

212 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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