AMD Radeon 620 Mobile vs NVIDIA GeForce GT 640M LE

VS

AMD Radeon 620 Mobile NVIDIA GeForce GT 640M LE

We compared two Mobile platform GPUs: 2GB VRAM Radeon 620 Mobile and 2GB VRAM GeForce GT 640M LE to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon 620 Mobile 's Advantages

Released 7 years late

Boost Clock1024MHz

288 additional rendering cores

NVIDIA GeForce GT 640M LE 's Advantages

Larger VRAM bandwidth (50.24GB/s vs 14.40GB/s)

Lower TDP (32W vs 50W)

Score

Benchmark

FP32 (float)

Radeon 620 Mobile +171%

0.786 TFLOPS

GeForce GT 640M LE

0.289 TFLOPS

Radeon 620 Mobile

VS

GeForce GT 640M LE

Graphics Card

May 2019

Release Date

May 2012

Mobility Radeon

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

730 MHz

Base Clock

-

1024 MHz

Boost Clock

-

900 MHz

Memory Clock

785 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

14.40GB/s

Bandwidth

50.24GB/s

Render Config

-

SM Count

2

6

Compute Units

-

384

Shading Units

96

24

TMUs

16

8

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

128 KB

L2 Cache

256 KB

Theoretical Performance

8.192 GPixel/s

Pixel Rate

3.012 GPixel/s

24.58 GTexel/s

Texture Rate

12.05 GTexel/s

786.4 GFLOPS

FP16 (half)

-

786.4 GFLOPS

FP32 (float)

289.0 GFLOPS

49.15 GFLOPS

FP64 (double)

24.08 GFLOPS

Graphics Processor

Polaris 24

GPU Name

GF108

Polaris 24 XL

GPU Variant

-

GCN 3.0

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.55 billion

Transistors

0.585 billion

125 mm²

Die Size

116 mm²

Board Design

50W

TDP

32W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.0

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

6.3

Shader Model

5.1

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