AMD Radeon R5 A255 vs AMD Radeon Pro 555X

VS

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R5 A255 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 R5 A255 's Advantages

Boost Clock940MHz

AMD Radeon Pro 555X 's Advantages

Released 4 years and 6 months late

More VRAM (4GB vs 1GB)

Larger VRAM bandwidth (94.08GB/s vs 64.00GB/s)

384 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 A255

0.721 TFLOPS

Radeon Pro 555X +93%

1.393 TFLOPS

Radeon R5 A255

VS

Radeon Pro 555X

Graphics Card

Jan 2014

Release Date

Jul 2018

All-In-One

Generation

Radeon Pro Mac

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

925 MHz

Base Clock

-

940 MHz

Boost Clock

-

1000 MHz

Memory Clock

1470 MHz

Memory

1024MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

94.08GB/s

Render Config

-

SM Count

-

6

Compute Units

12

384

Shading Units

768

24

TMUs

48

8

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

1024 KB

Theoretical Performance

7.520 GPixel/s

Pixel Rate

14.51 GPixel/s

22.56 GTexel/s

Texture Rate

43.54 GTexel/s

-

FP16 (half)

1393 GFLOPS

721.9 GFLOPS

FP32 (float)

1393 GFLOPS

-

FP64 (double)

87.07 GFLOPS

Graphics Processor

Topaz

GPU Name

Polaris 21

Topaz PRO (216-0858030)

GPU Variant

Polaris 21 PRO

GCN 3.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

1.55 billion

Transistors

3 billion

125 mm²

Die Size

123 mm²

Board Design

Unknown

TDP

75W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.2.170

Vulkan

1.2

-

CUDA

-

6.5

Shader Model

6.4

Related GPU Comparisons

1

Intel Arc A370M vs AMD Radeon R5 A255

2

Intel Iris Xe MAX Graphics vs AMD Radeon R5 A255

3

AMD Radeon R5 A255 vs NVIDIA GeForce 705A

4

AMD Radeon HD 7870M vs AMD Radeon R5 A255

5

NVIDIA T600 Mobile vs AMD Radeon R5 A255

6

AMD Radeon R5 A255 vs NVIDIA GeForce GT 625M

7

AMD FirePro S7100X vs AMD Radeon R5 A255

8

AMD Radeon R5 A255 vs AMD Radeon Pro 460

9

AMD Radeon R5 A255 vs NVIDIA GeForce 930MX

10

AMD Radeon R5 A255 vs AMD Radeon R5 A320

Related News

1

Complete Layout of Intel's Next-Gen LGA1851 Interface Exposed: A Comprehensive Look at PCIe and USB Features

2

Apple's 2025 OS in Development: iOS 19 Codename 'Luck'

3

Apple's AI is Memory Hungry! The Entire iPhone 16 Lineup Comes with 8GB RAM

4

Noctua Announce NH-D15 G2 Air Cooler and NF-A14x25r G2 Fan

5

The P-Cores and E-Cores in Arrow Lake Will Be Interleaved, Reducing Core Communication Latency and Improving Heat Dissipation

6

Changes in Intel Arrow Lake P/E Core Layout: Two Major Benefits

7

Time to Step Up, AMD and Intel! Nvidia Faces Antitrust Lawsuits in France, US, and EU

8

Intel Arrow Lake-S Features Dual Direct M.2 Slots: One PCIe 5.0 x4 and One PCIe 4.0 x4

9

AMD Ryzen 9000X3D Series to Feature Fully Unlocked Overclocking; DDR5-6400: The 'Sweet Spot' for Zen 5 Memory Speeds

10

Intel Z890 Motherboard Specs Leaked: Farewell to DDR4 Memory