ATI Mobility Radeon HD 3870 vs AMD Radeon HD 7550M

VS

ATI Mobility Radeon HD 3870

AMD Radeon HD 7550M

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 1024MB VRAM Radeon HD 7550M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3870 's Advantages

Larger VRAM bandwidth (54.40GB/s vs 14.40GB/s)

AMD Radeon HD 7550M 's Advantages

Released 3 years and 7 months late

Boost Clock550MHz

More VRAM (1024GB vs 512GB)

80 additional rendering cores

Lower TDP (14W vs 55W)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon HD 7550M +4%

0.44 TFLOPS

Mobility Radeon HD 3870

VS

Radeon HD 7550M

Graphics Card

Jun 2008

Release Date

Jan 2012

M8x

Generation

London

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

450 MHz

-

Boost Clock

550 MHz

850 MHz

Memory Clock

900 MHz

Memory

512MB

Memory Size

1024MB

GDDR3

Memory Type

DDR3

256bit

Memory Bus

64bit

54.40GB/s

Bandwidth

14.40GB/s

Render Config

4

Compute Units

5

-

320

Shading Units

400

16

TMUs

20

16

ROPs

8

-

256 KB

L2 Cache

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

4.400 GPixel/s

10.56 GTexel/s

Texture Rate

11.00 GTexel/s

-

422.4 GFLOPS

FP32 (float)

440.0 GFLOPS

84.48 GFLOPS

FP64 (double)

-

Board Design

55W

TDP

14W

-

No outputs

Outputs

No outputs

-

Graphics Processor

M88

GPU Name

Thames

-

GPU Variant

Thames LP

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

0.716 billion

192 mm²

Die Size

104 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

N/A

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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