NVIDIA GeForce GT 555M vs NVIDIA GeForce GT 420M

VS

NVIDIA GeForce GT 555M

NVIDIA GeForce GT 420M

We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 555M and 512MB VRAM GeForce GT 420M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 555M 's Advantages

Released 1 years and 6 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (28.80GB/s vs 25.60GB/s)

48 additional rendering cores

NVIDIA GeForce GT 420M 's Advantages

Lower TDP (23W vs 35W)

Score

Benchmark

FP32 (float)

GeForce GT 555M +102%

0.389 TFLOPS

GeForce GT 420M

0.192 TFLOPS

GeForce GT 555M

VS

GeForce GT 420M

Graphics Card

Mar 2012

Release Date

Sep 2010

GeForce 500M

Generation

GeForce 400M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

512MB

DDR3

Memory Type

DDR3

128bit

Memory Bus

128bit

28.80GB/s

Bandwidth

25.60GB/s

Render Config

-

2

SM Count

2

144

Shading Units

96

24

TMUs

16

ROPs

4

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

2.700 GPixel/s

Pixel Rate

2.000 GPixel/s

16.20 GTexel/s

Texture Rate

8.000 GTexel/s

-

388.8 GFLOPS

FP32 (float)

192.0 GFLOPS

32.40 GFLOPS

FP64 (double)

16.00 GFLOPS

Board Design

35W

TDP

23W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GF116

GPU Name

GF108

N12E-GE2-A1

GPU Variant

N11P-GE-A1

Fermi 2.0

Architecture

Fermi

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.17 billion

Transistors

0.585 billion

238 mm²

Die Size

116 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.1

CUDA

2.1

5.1

Shader Model

5.1

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