AMD Radeon HD 7450A vs ATI Mobility Radeon HD 3870 X2

VS

AMD Radeon HD 7450A

ATI Mobility Radeon HD 3870 X2

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 7450A and 512MB VRAM Mobility Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7450A 's Advantages

Released 3 years and 4 months late

Lower TDP (25W vs 110W)

ATI Mobility Radeon HD 3870 X2 's Advantages

Larger VRAM bandwidth (54.40GB/s vs 12.80GB/s)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7450A

0.2 TFLOPS

Mobility Radeon HD 3870 X2 +111%

0.422 TFLOPS

Radeon HD 7450A

VS

Mobility Radeon HD 3870 X2

Graphics Card

Jan 2012

Release Date

Sep 2008

All-In-One

Generation

M8x

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

850 MHz

Memory

512MB

Memory Size

512MB

GDDR3

Memory Type

GDDR3

64bit

Memory Bus

256bit

12.80GB/s

Bandwidth

54.40GB/s

Render Config

2

Compute Units

4

-

160

Shading Units

320

8

TMUs

16

4

ROPs

16

-

8 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

256 KB

-

Theoretical Performance

2.500 GPixel/s

Pixel Rate

10.56 GPixel/s

5.000 GTexel/s

Texture Rate

10.56 GTexel/s

-

200.0 GFLOPS

FP32 (float)

422.4 GFLOPS

-

FP64 (double)

84.48 GFLOPS

Board Design

25W

TDP

110W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Caicos

GPU Name

M88

-

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

0.37 billion

Transistors

0.666 billion

67 mm²

Die Size

192 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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