AMD Radeon R9 390X vs AMD Radeon RX 580G

VS

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390X and 8GB VRAM Radeon RX 580G to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390X 's Advantages

Larger VRAM bandwidth (384.0GB/s vs 256.0GB/s)

512 additional rendering cores

AMD Radeon RX 580G 's Advantages

Released 3 years and 4 months late

Boost Clock1330MHz

Lower TDP (185W vs 275W)

Score

Benchmark

FP32 (float)

Radeon R9 390X

5.914 TFLOPS

Radeon RX 580G +3%

6.129 TFLOPS

Radeon R9 390X

VS

Radeon RX 580G

Graphics Card

Jun 2015

Release Date

Oct 2018

Pirate Islands

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1257 MHz

-

Boost Clock

1330 MHz

1500 MHz

Memory Clock

2000 MHz

Memory

8GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

256bit

384.0GB/s

Bandwidth

256.0GB/s

Render Config

-

SM Count

-

44

Compute Units

36

2816

Shading Units

2304

176

TMUs

144

64

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

2 MB

Theoretical Performance

67.20 GPixel/s

Pixel Rate

42.56 GPixel/s

184.8 GTexel/s

Texture Rate

191.5 GTexel/s

-

FP16 (half)

6.129 TFLOPS

5.914 TFLOPS

FP32 (float)

6.129 TFLOPS

739.2 GFLOPS

FP64 (double)

383.0 GFLOPS

Graphics Processor

Grenada

GPU Name

Polaris 20

Grenada XT (215-0880004)

GPU Variant

Polaris 20 XTX (215-0910038)

GCN 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

6.2 billion

Transistors

5.7 billion

438 mm²

Die Size

232 mm²

Board Design

275W

TDP

185W

600 W

Suggested PSU

450 W

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

1x HDMI 2.0b 3x DisplayPort 1.4a

1x 6-pin + 1x 8-pin

Power Connectors

1x 8-pin

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.0

OpenCL

2.1

1.2

Vulkan

1.2

-

CUDA

-

6.3

Shader Model

6.4

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