NVIDIA GeForce 620M vs AMD Radeon R5 A255

VS

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 620M and 1024MB VRAM Radeon R5 A255 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 A255 's Advantages

Released 1 years and 10 months late

Boost Clock940MHz

Larger VRAM bandwidth (64.00GB/s vs 14.40GB/s)

288 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 620M

0.24 TFLOPS

Radeon R5 A255 +200%

0.721 TFLOPS

GeForce 620M

VS

Radeon R5 A255

Graphics Card

Mar 2012

Release Date

Jan 2014

GeForce 600M

Generation

All-In-One

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

940 MHz

900 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

14.40GB/s

Bandwidth

64.00GB/s

Render Config

2

SM Count

-

Compute Units

6

96

Shading Units

384

16

TMUs

24

8

ROPs

8

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

256 KB

Theoretical Performance

2.500 GPixel/s

Pixel Rate

7.520 GPixel/s

10.00 GTexel/s

Texture Rate

22.56 GTexel/s

-

FP16 (half)

-

240.0 GFLOPS

FP32 (float)

721.9 GFLOPS

20.00 GFLOPS

FP64 (double)

-

Graphics Processor

GF117

GPU Name

Topaz

N13P-GLP

GPU Variant

Topaz PRO (216-0858030)

Fermi 2.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.585 billion

Transistors

1.55 billion

116 mm²

Die Size

125 mm²

Board Design

15W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.1

OpenCL

2.1

N/A

Vulkan

1.2.170

2.1

CUDA

-

5.1

Shader Model

6.5

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