ATI Mobility Radeon HD 3870 vs NVIDIA GeForce 405M

VS

ATI Mobility Radeon HD 3870 NVIDIA GeForce 405M

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 512MB VRAM GeForce 405M 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)

304 additional rendering cores

NVIDIA GeForce 405M 's Advantages

Released 2 years and 7 months late

Lower TDP (14W vs 55W)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870 +982%

0.422 TFLOPS

GeForce 405M

0.039 TFLOPS

Mobility Radeon HD 3870

VS

GeForce 405M

Graphics Card

Jun 2008

Release Date

Jan 2011

M8x

Generation

GeForce 400M

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

512MB

GDDR3

Memory Type

GDDR3

256bit

Memory Bus

64bit

54.40GB/s

Bandwidth

12.80GB/s

Render Config

-

SM Count

2

4

Compute Units

-

320

Shading Units

16

TMUs

8

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

L1 Cache

-

256 KB

L2 Cache

32 KB

Theoretical Performance

10.56 GPixel/s

Pixel Rate

2.424 GPixel/s

10.56 GTexel/s

Texture Rate

4.848 GTexel/s

-

FP16 (half)

-

422.4 GFLOPS

FP32 (float)

38.78 GFLOPS

84.48 GFLOPS

FP64 (double)

-

Graphics Processor

M88

GPU Name

GT218

-

GPU Variant

-

TeraScale

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

0.26 billion

192 mm²

Die Size

57 mm²

Board Design

55W

TDP

14W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

-

Graphics Features

10.1 (10_1)

DirectX

11.1 (10_1)

3.3

OpenGL

3.3

N/A

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.2

4.1

Shader Model

4.1

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