AMD Radeon R9 380X vs AMD Radeon R9 390X

VS

AMD Radeon R9 380X

AMD Radeon R9 390X

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 380X and 8GB VRAM Radeon R9 390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 380X 's Advantages

Lower TDP (190W vs 275W)

AMD Radeon R9 390X 's Advantages

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (384.0GB/s vs 182.4GB/s)

768 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 380X

3.973 TFLOPS

Radeon R9 390X +48%

5.914 TFLOPS

3DMark Time Spy

Radeon R9 380X

3050

Radeon R9 390X +39%

4245

Radeon R9 380X

VS

Radeon R9 390X

Graphics Card

Nov 2015

Release Date

Jun 2015

Pirate Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1425 MHz

Memory Clock

1500 MHz

Memory

4GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

512bit

182.4GB/s

Bandwidth

384.0GB/s

Render Config

32

Compute Units

44

-

2048

Shading Units

2816

128

TMUs

176

32

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

31.04 GPixel/s

Pixel Rate

67.20 GPixel/s

124.2 GTexel/s

Texture Rate

184.8 GTexel/s

3.973 TFLOPS

FP16 (half)

-

3.973 TFLOPS

FP32 (float)

5.914 TFLOPS

248.3 GFLOPS

FP64 (double)

739.2 GFLOPS

Board Design

190W

TDP

275W

450 W

Suggested PSU

600 W

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

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Antigua

GPU Name

Grenada

Antigua XT (215-0877016)

GPU Variant

Grenada XT (215-0880004)

GCN 3.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

6.2 billion

366 mm²

Die Size

438 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.0

OpenCL

2.0

1.2

Vulkan

1.2

-

6.3

Shader Model

6.3

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