ATI Mobility Radeon HD 3870 vs AMD Radeon HD 6650M

VS

ATI Mobility Radeon HD 3870 AMD Radeon HD 6650M

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 1024MB VRAM Radeon HD 6650M 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 25.60GB/s)

AMD Radeon HD 6650M 's Advantages

Released 2 years and 7 months late

More VRAM (1024GB vs 512GB)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon HD 6650M +36%

0.576 TFLOPS

Mobility Radeon HD 3870

VS

Radeon HD 6650M

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

-

Base Clock

-

Boost Clock

-

850 MHz

Memory Clock

800 MHz

Memory

512MB

Memory Size

1024MB

GDDR3

Memory Type

DDR3

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

25.60GB/s

Render Config

-

SM Count

-

4

Compute Units

6

320

Shading Units

480

16

TMUs

24

16

ROPs

8

-

Tensor Cores

-

RT Cores

-

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

10.56 GPixel/s

Pixel Rate

4.800 GPixel/s

10.56 GTexel/s

Texture Rate

14.40 GTexel/s

-

FP16 (half)

-

422.4 GFLOPS

FP32 (float)

576.0 GFLOPS

84.48 GFLOPS

FP64 (double)

-

Graphics Processor

M88

GPU Name

Whistler

-

GPU Variant

Whistler LE (216-0810028)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

0.716 billion

192 mm²

Die Size

118 mm²

Board Design

55W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

-

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

-

CUDA

-

4.1

Shader Model

5.0

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