AMD Radeon HD 8790M vs AMD Radeon RX 580X Mobile

VS

AMD Radeon HD 8790M AMD Radeon RX 580X Mobile

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 8790M and 8GB VRAM Radeon RX 580X Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 580X Mobile 's Advantages

Released 5 years late

Boost Clock has increased by 20% (1077MHz vs 900MHz)

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 64.00GB/s)

1920 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8790M

0.691 TFLOPS

Radeon RX 580X Mobile +618%

4.963 TFLOPS

Radeon HD 8790M

VS

Radeon RX 580X Mobile

Graphics Card

Apr 2013

Release Date

Apr 2018

Solar System

Generation

Mobility Radeon

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

MXM-B (3.0)

Clock Speeds

850 MHz

Base Clock

1000 MHz

900 MHz

Boost Clock

1077 MHz

1000 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

256.0GB/s

Render Config

-

SM Count

-

6

Compute Units

36

384

Shading Units

2304

24

TMUs

144

8

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

2 MB

Theoretical Performance

7.200 GPixel/s

Pixel Rate

34.46 GPixel/s

21.60 GTexel/s

Texture Rate

155.1 GTexel/s

-

FP16 (half)

4.963 TFLOPS

691.2 GFLOPS

FP32 (float)

4.963 TFLOPS

43.20 GFLOPS

FP64 (double)

310.2 GFLOPS

Graphics Processor

Mars

GPU Name

Polaris 20

Mars M2 XTX (216-0842036)

GPU Variant

Polaris 20M XT

GCN 1.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

0.95 billion

Transistors

5.7 billion

77 mm²

Die Size

232 mm²

Board Design

Unknown

TDP

100W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

2.1

1.2.170

Vulkan

1.2

-

CUDA

-

6.5 (5.1)

Shader Model

6.4

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