AMD Radeon Pro 555X vs NVIDIA GeForce GT 420M

VS

AMD Radeon Pro 555X NVIDIA GeForce GT 420M

We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro 555X and 512MB VRAM GeForce GT 420M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 555X 's Advantages

Released 7 years and 10 months late

Larger VRAM bandwidth (94.08GB/s vs 25.60GB/s)

672 additional rendering cores

NVIDIA GeForce GT 420M 's Advantages

Lower TDP (23W vs 75W)

Score

Benchmark

FP32 (float)

Radeon Pro 555X +625%

1.393 TFLOPS

GeForce GT 420M

0.192 TFLOPS

Radeon Pro 555X

VS

GeForce GT 420M

Graphics Card

Jul 2018

Release Date

Sep 2010

Radeon Pro Mac

Generation

GeForce 400M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1470 MHz

Memory Clock

800 MHz

Memory

4GB

Memory Size

512MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

94.08GB/s

Bandwidth

25.60GB/s

Render Config

-

SM Count

2

12

Compute Units

-

768

Shading Units

96

48

TMUs

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

1024 KB

L2 Cache

256 KB

Theoretical Performance

14.51 GPixel/s

Pixel Rate

2.000 GPixel/s

43.54 GTexel/s

Texture Rate

8.000 GTexel/s

1393 GFLOPS

FP16 (half)

-

1393 GFLOPS

FP32 (float)

192.0 GFLOPS

87.07 GFLOPS

FP64 (double)

16.00 GFLOPS

Graphics Processor

Polaris 21

GPU Name

GF108

Polaris 21 PRO

GPU Variant

N11P-GE-A1

GCN 4.0

Architecture

Fermi

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

3 billion

Transistors

0.585 billion

123 mm²

Die Size

116 mm²

Board Design

75W

TDP

23W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

6.4

Shader Model

5.1

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