NVIDIA GeForce GTX 870M vs AMD Radeon RX 640 Mobile

VS

NVIDIA GeForce GTX 870M

AMD Radeon RX 640 Mobile

We compared two Mobile platform GPUs: 3GB VRAM GeForce GTX 870M and 2GB VRAM Radeon RX 640 Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 870M 's Advantages

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (120.0GB/s vs 48.00GB/s)

704 additional rendering cores

AMD Radeon RX 640 Mobile 's Advantages

Released 5 years and 2 months late

Boost Clock has increased by 26% (1218MHz vs 967MHz)

Lower TDP (50W vs 100W)

Score

Benchmark

FP32 (float)

GeForce GTX 870M +66%

2.599 TFLOPS

Radeon RX 640 Mobile

1.559 TFLOPS

GeForce GTX 870M

VS

Radeon RX 640 Mobile

Graphics Card

Mar 2014

Release Date

May 2019

GeForce 800M

Generation

Mobility Radeon

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

941 MHz

Base Clock

1082 MHz

967 MHz

Boost Clock

1218 MHz

1250 MHz

Memory Clock

1500 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

64bit

120.0GB/s

Bandwidth

48.00GB/s

Render Config

-

Compute Units

10

-

1344

Shading Units

640

112

TMUs

40

24

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

512 KB

-

Theoretical Performance

27.08 GPixel/s

Pixel Rate

19.49 GPixel/s

108.3 GTexel/s

Texture Rate

48.72 GTexel/s

-

FP16 (half)

1.559 TFLOPS

2.599 TFLOPS

FP32 (float)

1.559 TFLOPS

108.3 GFLOPS

FP64 (double)

97.44 GFLOPS

Board Design

100W

TDP

50W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

GK104

GPU Name

Polaris 23

N15E-GT-A2

GPU Variant

Polaris 23 XT

Kepler

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

3.54 billion

Transistors

2.2 billion

294 mm²

Die Size

103 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

6.4

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