AMD Radeon RX 640 Mobile vs NVIDIA GeForce 845M

VS

AMD Radeon RX 640 Mobile

NVIDIA GeForce 845M

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 2GB VRAM GeForce 845M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 640 Mobile 's Advantages

Released 3 years and 9 months late

Boost Clock has increased by 4% (1218MHz vs 1176MHz)

Larger VRAM bandwidth (48.00GB/s vs 40.10GB/s)

256 additional rendering cores

NVIDIA GeForce 845M 's Advantages

Lower TDP (33W vs 50W)

Score

Benchmark

FP32 (float)

Radeon RX 640 Mobile +72%

1.559 TFLOPS

GeForce 845M

0.903 TFLOPS

Radeon RX 640 Mobile

VS

GeForce 845M

Graphics Card

May 2019

Release Date

Aug 2015

Mobility Radeon

Generation

GeForce 800M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

1082 MHz

Base Clock

1071 MHz

1218 MHz

Boost Clock

1176 MHz

1500 MHz

Memory Clock

1253 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

64bit

48.00GB/s

Bandwidth

40.10GB/s

Render Config

10

Compute Units

-

640

Shading Units

384

40

TMUs

32

16

ROPs

16

-

16 KB (per CU)

L1 Cache

64 KB (per SMM)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

19.49 GPixel/s

Pixel Rate

18.82 GPixel/s

48.72 GTexel/s

Texture Rate

37.63 GTexel/s

1.559 TFLOPS

FP16 (half)

-

1.559 TFLOPS

FP32 (float)

903.2 GFLOPS

97.44 GFLOPS

FP64 (double)

28.22 GFLOPS

Board Design

50W

TDP

33W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Polaris 23

GPU Name

GM108

Polaris 23 XT

GPU Variant

-

GCN 4.0

Architecture

Maxwell

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

2.2 billion

Transistors

Unknown

103 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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