AMD Radeon HD 6870M vs NVIDIA GeForce GT 555M

VS

AMD Radeon HD 6870M

NVIDIA GeForce GT 555M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6870M and 2GB VRAM GeForce GT 555M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870M 's Advantages

Larger VRAM bandwidth (64.00GB/s vs 28.80GB/s)

656 additional rendering cores

NVIDIA GeForce GT 555M 's Advantages

Released 1 years and 2 months late

More VRAM (2GB vs 1024GB)

Lower TDP (35W vs 50W)

Score

Benchmark

FP32 (float)

Radeon HD 6870M +177%

1.08 TFLOPS

GeForce GT 555M

0.389 TFLOPS

Radeon HD 6870M

VS

GeForce GT 555M

Graphics Card

Jan 2011

Release Date

Mar 2012

Vancouver

Generation

GeForce 500M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

28.80GB/s

Render Config

10

Compute Units

-

SM Count

2

800

Shading Units

144

40

TMUs

24

16

ROPs

16

-

8 KB (per CU)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

10.80 GPixel/s

Pixel Rate

2.700 GPixel/s

27.00 GTexel/s

Texture Rate

16.20 GTexel/s

-

1080 GFLOPS

FP32 (float)

388.8 GFLOPS

-

FP64 (double)

32.40 GFLOPS

Board Design

50W

TDP

35W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Granville

GPU Name

GF116

Granville XT (216-0769024)

GPU Variant

N12E-GE2-A1

TeraScale 2

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.04 billion

Transistors

1.17 billion

166 mm²

Die Size

238 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

5.0

Shader Model

5.1

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