AMD Radeon HD 7970M vs AMD Radeon HD 6490M

VS

AMD Radeon HD 7970M

AMD Radeon HD 6490M

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7970M and 512MB VRAM Radeon HD 6490M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970M 's Advantages

Released 1 years and 3 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (153.6GB/s vs 25.60GB/s)

1120 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7970M +750%

2.176 TFLOPS

Radeon HD 6490M

0.256 TFLOPS

Radeon HD 7970M

VS

Radeon HD 6490M

Graphics Card

Apr 2012

Release Date

Jan 2011

London

Generation

Vancouver

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

153.6GB/s

Bandwidth

25.60GB/s

Render Config

20

Compute Units

2

-

1280

Shading Units

160

80

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

3.200 GPixel/s

68.00 GTexel/s

Texture Rate

6.400 GTexel/s

-

2.176 TFLOPS

FP32 (float)

256.0 GFLOPS

136.0 GFLOPS

FP64 (double)

-

Board Design

100W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Processor

Wimbledon

GPU Name

Seymour

Wimbledon XT (216-0836036)

GPU Variant

Seymour XTX S3 (216-0809024)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

0.37 billion

212 mm²

Die Size

67 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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