AMD Radeon HD 7470M vs AMD Radeon HD 6990M

VS

AMD Radeon HD 7470M

AMD Radeon HD 6990M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 7470M 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 7470M 's Advantages

Released 6 months late

Boost Clock800MHz

Lower TDP (25W vs 100W)

AMD Radeon HD 6990M 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (115.2GB/s vs 14.40GB/s)

960 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7470M

0.256 TFLOPS

Radeon HD 6990M +525%

1.602 TFLOPS

Radeon HD 7470M

VS

Radeon HD 6990M

Graphics Card

Jan 2012

Release Date

Jul 2011

London

Generation

Vancouver

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

750 MHz

Base Clock

-

800 MHz

Boost Clock

-

900 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

256bit

14.40GB/s

Bandwidth

115.2GB/s

Render Config

2

Compute Units

14

-

160

Shading Units

1120

8

TMUs

56

4

ROPs

32

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

128 KB

L2 Cache

512 KB

-

Theoretical Performance

3.200 GPixel/s

Pixel Rate

22.88 GPixel/s

6.400 GTexel/s

Texture Rate

40.04 GTexel/s

-

256.0 GFLOPS

FP32 (float)

1.602 TFLOPS

-

Board Design

25W

TDP

100W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Seymour

GPU Name

Blackcomb

Seymour XT (216-0810084)

GPU Variant

Blackcomb XTX (216-0811030)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.37 billion

Transistors

1.7 billion

67 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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