AMD Radeon HD 7450A vs AMD Radeon HD 6870M

VS

AMD Radeon HD 7450A

AMD Radeon HD 6870M

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 7450A and 1024MB VRAM Radeon HD 6870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7450A 's Advantages

Released 1 years late

Lower TDP (25W vs 50W)

AMD Radeon HD 6870M 's Advantages

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 12.80GB/s)

640 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7450A

0.2 TFLOPS

Radeon HD 6870M +440%

1.08 TFLOPS

Radeon HD 7450A

VS

Radeon HD 6870M

Graphics Card

Jan 2012

Release Date

Jan 2011

All-In-One

Generation

Vancouver

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

MXM-B (3.0)

Clock Speeds

-

800 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

12.80GB/s

Bandwidth

64.00GB/s

Render Config

2

Compute Units

10

-

160

Shading Units

800

8

TMUs

40

4

ROPs

16

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

2.500 GPixel/s

Pixel Rate

10.80 GPixel/s

5.000 GTexel/s

Texture Rate

27.00 GTexel/s

-

200.0 GFLOPS

FP32 (float)

1080 GFLOPS

-

Board Design

25W

TDP

50W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Caicos

GPU Name

Granville

-

GPU Variant

Granville XT (216-0769024)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.37 billion

Transistors

1.04 billion

67 mm²

Die Size

166 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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