AMD Radeon RX 640 Mobile vs AMD Radeon Pro 455

VS

AMD Radeon RX 640 Mobile AMD Radeon Pro 455

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 2GB VRAM Radeon Pro 455 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 2 years and 7 months late

Boost Clock1218MHz

AMD Radeon Pro 455 's Advantages

Larger VRAM bandwidth (81.28GB/s vs 48.00GB/s)

128 additional rendering cores

Lower TDP (35W vs 50W)

Score

Benchmark

FP32 (float)

Radeon RX 640 Mobile +18%

1.559 TFLOPS

Radeon Pro 455

1.313 TFLOPS

Radeon RX 640 Mobile

VS

Radeon Pro 455

Graphics Card

May 2019

Release Date

Oct 2016

Mobility Radeon

Generation

Radeon Pro Mac

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

1082 MHz

Base Clock

-

1218 MHz

Boost Clock

-

1500 MHz

Memory Clock

1270 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

128bit

48.00GB/s

Bandwidth

81.28GB/s

Render Config

-

SM Count

-

10

Compute Units

12

640

Shading Units

768

40

TMUs

48

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

Theoretical Performance

19.49 GPixel/s

Pixel Rate

13.68 GPixel/s

48.72 GTexel/s

Texture Rate

41.04 GTexel/s

1.559 TFLOPS

FP16 (half)

1313 GFLOPS

1.559 TFLOPS

FP32 (float)

1313 GFLOPS

97.44 GFLOPS

FP64 (double)

82.08 GFLOPS

Graphics Processor

Polaris 23

GPU Name

Baffin

Polaris 23 XT

GPU Variant

Baffin PRO

GCN 4.0

Architecture

GCN 4.0

GlobalFoundries

Foundry

GlobalFoundries

14 nm

Process Size

14 nm

2.2 billion

Transistors

3 billion

103 mm²

Die Size

123 mm²

Board Design

50W

TDP

35W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.2

Vulkan

1.2

-

CUDA

-

6.4

Shader Model

6.4

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