NVIDIA GeForce GT 420M vs AMD Radeon HD 6550M

VS

NVIDIA GeForce GT 420M

AMD Radeon HD 6550M

We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 420M and 1024MB VRAM Radeon HD 6550M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 420M 's Advantages

Lower TDP (23W vs 26W)

AMD Radeon HD 6550M 's Advantages

More VRAM (1024GB vs 512GB)

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

304 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 420M

0.192 TFLOPS

Radeon HD 6550M +150%

0.48 TFLOPS

GeForce GT 420M

VS

Radeon HD 6550M

Graphics Card

Sep 2010

Release Date

Nov 2010

GeForce 400M

Generation

Vancouver

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-II

Clock Speeds

-

800 MHz

Memory Clock

900 MHz

Memory

512MB

Memory Size

1024MB

DDR3

Memory Type

DDR3

128bit

Memory Bus

128bit

25.60GB/s

Bandwidth

28.80GB/s

Render Config

-

Compute Units

5

2

SM Count

-

96

Shading Units

400

16

TMUs

20

4

ROPs

8

-

64 KB (per SM)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

2.000 GPixel/s

Pixel Rate

4.800 GPixel/s

8.000 GTexel/s

Texture Rate

12.00 GTexel/s

-

192.0 GFLOPS

FP32 (float)

480.0 GFLOPS

16.00 GFLOPS

FP64 (double)

-

Board Design

23W

TDP

26W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GF108

GPU Name

Lexington

N11P-GE-A1

GPU Variant

-

Fermi

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.585 billion

Transistors

2.154 billion

116 mm²

Die Size

334 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

5.0

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