AMD Radeon Pro Vega 20 vs NVIDIA GeForce GT 645M

VS

AMD Radeon Pro Vega 20 NVIDIA GeForce GT 645M

We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro Vega 20 and 2GB VRAM GeForce GT 645M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro Vega 20 's Advantages

Released 6 years and 1 months late

Boost Clock1283MHz

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (189.4GB/s vs 28.80GB/s)

896 additional rendering cores

NVIDIA GeForce GT 645M 's Advantages

Lower TDP (32W vs 100W)

Score

Benchmark

FP32 (float)

Radeon Pro Vega 20 +503%

3.284 TFLOPS

GeForce GT 645M

0.544 TFLOPS

Radeon Pro Vega 20

VS

GeForce GT 645M

Graphics Card

Nov 2018

Release Date

Oct 2012

Radeon Pro Mac

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

815 MHz

Base Clock

-

1283 MHz

Boost Clock

-

740 MHz

Memory Clock

900 MHz

Memory

4GB

Memory Size

2GB

HBM2

Memory Type

DDR3

1024bit

Memory Bus

128bit

189.4GB/s

Bandwidth

28.80GB/s

Render Config

-

SM Count

-

20

Compute Units

-

1280

Shading Units

384

80

TMUs

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

256 KB

Theoretical Performance

41.06 GPixel/s

Pixel Rate

5.672 GPixel/s

102.6 GTexel/s

Texture Rate

22.69 GTexel/s

6.569 TFLOPS

FP16 (half)

-

3.284 TFLOPS

FP32 (float)

544.5 GFLOPS

205.3 GFLOPS

FP64 (double)

22.69 GFLOPS

Graphics Processor

Vega 12

GPU Name

GK107

Vega 12 XTA

GPU Variant

N13P-GS

GCN 5.0

Architecture

Kepler

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

Unknown

Transistors

1.27 billion

Unknown

Die Size

118 mm²

Board Design

100W

TDP

32W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (12_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

6.3

Shader Model

5.1

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