ATI Mobility Radeon HD 3870 vs AMD Radeon HD 6450M

VS

ATI Mobility Radeon HD 3870

AMD Radeon HD 6450M

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 1024MB VRAM Radeon HD 6450M 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 12.80GB/s)

160 additional rendering cores

AMD Radeon HD 6450M 's Advantages

Released 2 years and 7 months late

More VRAM (1024GB vs 512GB)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870 +119%

0.422 TFLOPS

Radeon HD 6450M

0.192 TFLOPS

Mobility Radeon HD 3870

VS

Radeon HD 6450M

Graphics Card

Jun 2008

Release Date

Jan 2011

M8x

Generation

Vancouver

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

850 MHz

Memory Clock

800 MHz

Memory

512MB

Memory Size

1024MB

GDDR3

Memory Type

DDR3

256bit

Memory Bus

64bit

54.40GB/s

Bandwidth

12.80GB/s

Render Config

4

Compute Units

2

-

320

Shading Units

160

16

TMUs

8

16

ROPs

4

-

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

2.400 GPixel/s

10.56 GTexel/s

Texture Rate

4.800 GTexel/s

-

422.4 GFLOPS

FP32 (float)

192.0 GFLOPS

84.48 GFLOPS

FP64 (double)

-

Board Design

55W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

M88

GPU Name

Seymour

-

GPU Variant

Seymour PRO S3 (216-0809024)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

0.37 billion

192 mm²

Die Size

67 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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