AMD Radeon RX Vega M GH vs NVIDIA GeForce 840M

VS

AMD Radeon RX Vega M GH

NVIDIA GeForce 840M

We compared two Mobile platform GPUs: 4GB VRAM Radeon RX Vega M GH and 2GB VRAM GeForce 840M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX Vega M GH 's Advantages

Released 3 years and 11 months late

Boost Clock has increased by 6% (1190MHz vs 1124MHz)

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (204.8GB/s vs 16.02GB/s)

1152 additional rendering cores

NVIDIA GeForce 840M 's Advantages

Lower TDP (33W vs 100W)

Score

Benchmark

FP32 (float)

Radeon RX Vega M GH +323%

3.656 TFLOPS

GeForce 840M

0.863 TFLOPS

Radeon RX Vega M GH

VS

GeForce 840M

Graphics Card

Feb 2018

Release Date

Mar 2014

Vega

Generation

GeForce 800M

Mobile

Type

Mobile

IGP

Bus Interface

PCIe 3.0 x8

Clock Speeds

1063 MHz

Base Clock

1029 MHz

1190 MHz

Boost Clock

1124 MHz

800 MHz

Memory Clock

1001 MHz

Memory

4GB

Memory Size

2GB

HBM2

Memory Type

DDR3

1024bit

Memory Bus

64bit

204.8GB/s

Bandwidth

16.02GB/s

Render Config

24

Compute Units

-

1536

Shading Units

384

96

TMUs

16

64

ROPs

8

-

16 KB (per CU)

L1 Cache

64 KB (per SMM)

1024 KB

L2 Cache

1024 KB

-

Theoretical Performance

76.16 GPixel/s

Pixel Rate

8.992 GPixel/s

114.2 GTexel/s

Texture Rate

17.98 GTexel/s

3.656 TFLOPS

FP16 (half)

-

3.656 TFLOPS

FP32 (float)

863.2 GFLOPS

228.5 GFLOPS

FP64 (double)

26.98 GFLOPS

Board Design

100W

TDP

33W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Polaris 22

GPU Name

GM108

VegaM XT (C7398773)

GPU Variant

N15S-GT

GCN 4.0

Architecture

Maxwell

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

5 billion

Transistors

Unknown

208 mm²

Die Size

Unknown

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.2

Vulkan

1.3

-

CUDA

5.0

6.4

Shader Model

5.1

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