AMD Radeon RX 480 Mobile vs NVIDIA GeForce 840M

VS

AMD Radeon RX 480 Mobile

NVIDIA GeForce 840M

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 480 Mobile 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 480 Mobile 's Advantages

Released 2 years and 5 months late

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 16.02GB/s)

1920 additional rendering cores

NVIDIA GeForce 840M 's Advantages

Boost Clock has increased by 4% (1124MHz vs 1077MHz)

Lower TDP (33W vs 100W)

Score

Benchmark

FP32 (float)

Radeon RX 480 Mobile +475%

4.963 TFLOPS

GeForce 840M

0.863 TFLOPS

Radeon RX 480 Mobile

VS

GeForce 840M

Graphics Card

Aug 2016

Release Date

Mar 2014

Mobility Radeon

Generation

GeForce 800M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

1000 MHz

Base Clock

1029 MHz

1077 MHz

Boost Clock

1124 MHz

2000 MHz

Memory Clock

1001 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

256.0GB/s

Bandwidth

16.02GB/s

Render Config

36

Compute Units

-

2304

Shading Units

384

144

TMUs

16

32

ROPs

8

-

16 KB (per CU)

L1 Cache

64 KB (per SMM)

2 MB

L2 Cache

1024 KB

-

Theoretical Performance

34.46 GPixel/s

Pixel Rate

8.992 GPixel/s

155.1 GTexel/s

Texture Rate

17.98 GTexel/s

4.963 TFLOPS

FP16 (half)

-

4.963 TFLOPS

FP32 (float)

863.2 GFLOPS

310.2 GFLOPS

FP64 (double)

26.98 GFLOPS

Board Design

100W

TDP

33W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Ellesmere

GPU Name

GM108

Ellesmere XT

GPU Variant

N15S-GT

GCN 4.0

Architecture

Maxwell

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

5.7 billion

Transistors

Unknown

232 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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