AMD Radeon HD 6870M vs NVIDIA GeForce 405M

VS

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6870M and 512MB VRAM GeForce 405M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870M 's Advantages

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 12.80GB/s)

784 additional rendering cores

NVIDIA GeForce 405M 's Advantages

Lower TDP (14W vs 50W)

Score

Benchmark

FP32 (float)

Radeon HD 6870M +2669%

1.08 TFLOPS

GeForce 405M

0.039 TFLOPS

Radeon HD 6870M

VS

GeForce 405M

Graphics Card

Jan 2011

Release Date

Jan 2011

Vancouver

Generation

GeForce 400M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1000 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

12.80GB/s

Render Config

-

SM Count

2

10

Compute Units

-

800

Shading Units

16

40

TMUs

8

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

32 KB

Theoretical Performance

10.80 GPixel/s

Pixel Rate

2.424 GPixel/s

27.00 GTexel/s

Texture Rate

4.848 GTexel/s

-

FP16 (half)

-

1080 GFLOPS

FP32 (float)

38.78 GFLOPS

-

FP64 (double)

-

Graphics Processor

Granville

GPU Name

GT218

Granville XT (216-0769024)

GPU Variant

-

TeraScale 2

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.04 billion

Transistors

0.26 billion

166 mm²

Die Size

57 mm²

Board Design

50W

TDP

14W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

-

Graphics Features

11.2 (11_0)

DirectX

11.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.2

5.0

Shader Model

4.1

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