AMD Radeon Pro 555X vs NVIDIA GeForce GT 620M

VS

AMD Radeon Pro 555X

NVIDIA GeForce GT 620M

We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro 555X and 1024MB VRAM GeForce GT 620M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 555X 's Advantages

Released 5 years and 11 months late

More VRAM (4GB vs 1024GB)

Larger VRAM bandwidth (94.08GB/s vs 28.80GB/s)

672 additional rendering cores

NVIDIA GeForce GT 620M 's Advantages

Lower TDP (15W vs 75W)

Score

Benchmark

FP32 (float)

Radeon Pro 555X +450%

1.393 TFLOPS

GeForce GT 620M

0.253 TFLOPS

Radeon Pro 555X

VS

GeForce GT 620M

Graphics Card

Jul 2018

Release Date

Aug 2012

Radeon Pro Mac

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1470 MHz

Memory Clock

900 MHz

Memory

4GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

94.08GB/s

Bandwidth

28.80GB/s

Render Config

12

Compute Units

-

SM Count

2

768

Shading Units

96

48

TMUs

16

ROPs

4

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

14.51 GPixel/s

Pixel Rate

2.640 GPixel/s

43.54 GTexel/s

Texture Rate

10.56 GTexel/s

1393 GFLOPS

FP16 (half)

-

1393 GFLOPS

FP32 (float)

253.4 GFLOPS

87.07 GFLOPS

FP64 (double)

21.12 GFLOPS

Board Design

75W

TDP

15W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Polaris 21

GPU Name

GF108

Polaris 21 PRO

GPU Variant

N13P-GLP-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

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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