AMD Radeon E9171 MCM vs AMD Radeon RX 640 Mobile

VS

AMD Radeon E9171 MCM

AMD Radeon RX 640 Mobile

We compared two Mobile platform GPUs: 4GB VRAM Radeon E9171 MCM and 2GB VRAM Radeon RX 640 Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon E9171 MCM 's Advantages

Boost Clock has increased by 0% (1219MHz vs 1218MHz)

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (96.00GB/s vs 48.00GB/s)

Lower TDP (40W vs 50W)

AMD Radeon RX 640 Mobile 's Advantages

Released 1 years and 7 months late

128 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon E9171 MCM

1.248 TFLOPS

Radeon RX 640 Mobile +24%

1.559 TFLOPS

Radeon E9171 MCM

VS

Radeon RX 640 Mobile

Graphics Card

Oct 2017

Release Date

May 2019

Embedded

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

1124 MHz

Base Clock

1082 MHz

1219 MHz

Boost Clock

1218 MHz

1500 MHz

Memory Clock

1500 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

64bit

96.00GB/s

Bandwidth

48.00GB/s

Render Config

8

Compute Units

10

-

512

Shading Units

640

32

TMUs

40

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

19.50 GPixel/s

Pixel Rate

19.49 GPixel/s

39.01 GTexel/s

Texture Rate

48.72 GTexel/s

1248 GFLOPS

FP16 (half)

1.559 TFLOPS

1248 GFLOPS

FP32 (float)

1.559 TFLOPS

78.02 GFLOPS

FP64 (double)

97.44 GFLOPS

Board Design

40W

TDP

50W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Lexa

GPU Name

Polaris 23

Lexa MCM Pro

GPU Variant

Polaris 23 XT

GCN 4.0

Architecture

GCN 4.0

GlobalFoundries

Foundry

GlobalFoundries

14 nm

Process Size

14 nm

2.2 billion

Transistors

2.2 billion

103 mm²

Die Size

103 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.2

Vulkan

1.2

-

6.4

Shader Model

6.4

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