AMD Radeon Pro 555X vs AMD Radeon HD 8790M

VS

AMD Radeon Pro 555X

AMD Radeon HD 8790M

We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro 555X and 2GB VRAM Radeon HD 8790M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 555X 's Advantages

Released 5 years and 3 months late

More VRAM (4GB vs 2GB)

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

384 additional rendering cores

AMD Radeon HD 8790M 's Advantages

Boost Clock900MHz

Score

Benchmark

FP32 (float)

Radeon Pro 555X +101%

1.393 TFLOPS

Radeon HD 8790M

0.691 TFLOPS

Radeon Pro 555X

VS

Radeon HD 8790M

Graphics Card

Jul 2018

Release Date

Apr 2013

Radeon Pro Mac

Generation

Solar System

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-A (3.0)

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

900 MHz

1470 MHz

Memory Clock

1000 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

94.08GB/s

Bandwidth

64.00GB/s

Render Config

12

Compute Units

6

-

768

Shading Units

384

48

TMUs

24

16

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

14.51 GPixel/s

Pixel Rate

7.200 GPixel/s

43.54 GTexel/s

Texture Rate

21.60 GTexel/s

1393 GFLOPS

FP16 (half)

-

1393 GFLOPS

FP32 (float)

691.2 GFLOPS

87.07 GFLOPS

FP64 (double)

43.20 GFLOPS

Board Design

75W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Processor

Polaris 21

GPU Name

Mars

Polaris 21 PRO

GPU Variant

Mars M2 XTX (216-0842036)

GCN 4.0

Architecture

GCN 1.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

3 billion

Transistors

0.95 billion

123 mm²

Die Size

77 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

2.1 (1.2)

1.2

Vulkan

1.2.170

-

6.4

Shader Model

6.5 (5.1)

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