AMD Radeon R9 390 vs AMD Radeon R9 380

VS

AMD Radeon R9 390

AMD Radeon R9 380

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390 and 2GB VRAM Radeon R9 380 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390 's Advantages

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (384.0GB/s vs 176.0GB/s)

768 additional rendering cores

AMD Radeon R9 380 's Advantages

Lower TDP (190W vs 275W)

Score

Benchmark

FP32 (float)

Radeon R9 390 +47%

5.12 TFLOPS

Radeon R9 380

3.476 TFLOPS

3DMark Time Spy

Radeon R9 390 +41%

3950

Radeon R9 380

2794

Radeon R9 390

VS

Radeon R9 380

Graphics Card

Jun 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

-

1500 MHz

Memory Clock

1375 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

256bit

384.0GB/s

Bandwidth

176.0GB/s

Render Config

40

Compute Units

28

-

2560

Shading Units

1792

160

TMUs

112

64

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

512 KB

-

Theoretical Performance

64.00 GPixel/s

Pixel Rate

31.04 GPixel/s

160.0 GTexel/s

Texture Rate

108.6 GTexel/s

-

FP16 (half)

3.476 TFLOPS

5.120 TFLOPS

FP32 (float)

3.476 TFLOPS

640.0 GFLOPS

FP64 (double)

217.3 GFLOPS

Board Design

275W

TDP

190W

600 W

Suggested PSU

450 W

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

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Grenada

GPU Name

Antigua

Grenada PRO (215-0880030)

GPU Variant

Antigua PRO (215-0877000)

GCN 2.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

6.2 billion

Transistors

5 billion

438 mm²

Die Size

366 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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