AMD Radeon Pro 450 vs AMD Radeon Pro 555X

VS

AMD Radeon Pro 450

AMD Radeon Pro 555X

We compared two Mobile platform GPUs: 2GB VRAM Radeon Pro 450 and 4GB VRAM Radeon Pro 555X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 450 's Advantages

Lower TDP (35W vs 75W)

AMD Radeon Pro 555X 's Advantages

Released 1 years and 9 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (94.08GB/s vs 81.28GB/s)

128 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon Pro 450

1.024 TFLOPS

Radeon Pro 555X +36%

1.393 TFLOPS

Radeon Pro 450

VS

Radeon Pro 555X

Graphics Card

Oct 2016

Release Date

Jul 2018

Radeon Pro Mac

Generation

Radeon Pro Mac

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

1270 MHz

Memory Clock

1470 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

81.28GB/s

Bandwidth

94.08GB/s

Render Config

10

Compute Units

12

-

640

Shading Units

768

40

TMUs

48

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

1024 KB

-

Theoretical Performance

12.80 GPixel/s

Pixel Rate

14.51 GPixel/s

32.00 GTexel/s

Texture Rate

43.54 GTexel/s

1024 GFLOPS

FP16 (half)

1393 GFLOPS

1024 GFLOPS

FP32 (float)

1393 GFLOPS

64.00 GFLOPS

FP64 (double)

87.07 GFLOPS

Board Design

35W

TDP

75W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Baffin

GPU Name

Polaris 21

Baffin LE

GPU Variant

Polaris 21 PRO

GCN 4.0

Architecture

GCN 4.0

GlobalFoundries

Foundry

GlobalFoundries

14 nm

Process Size

14 nm

3 billion

Transistors

3 billion

123 mm²

Die Size

123 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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