AMD Radeon R9 285X vs AMD Radeon R9 380

VS

AMD Radeon R9 285X

AMD Radeon R9 380

We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 285X 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 285X 's Advantages

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (264.0GB/s vs 176.0GB/s)

256 additional rendering cores

AMD Radeon R9 380 's Advantages

Lower TDP (190W vs 200W)

Score

Benchmark

FP32 (float)

Radeon R9 285X +18%

4.104 TFLOPS

Radeon R9 380

3.476 TFLOPS

Radeon R9 285X

VS

Radeon R9 380

Graphics Card

Unknown

Release Date

Jun 2015

Volcanic Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

1375 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

264.0GB/s

Bandwidth

176.0GB/s

Render Config

32

Compute Units

28

-

2048

Shading Units

1792

128

TMUs

112

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

512 KB

-

Theoretical Performance

32.06 GPixel/s

Pixel Rate

31.04 GPixel/s

128.3 GTexel/s

Texture Rate

108.6 GTexel/s

-

FP16 (half)

3.476 TFLOPS

4.104 TFLOPS

FP32 (float)

3.476 TFLOPS

-

FP64 (double)

217.3 GFLOPS

Board Design

200W

TDP

190W

550 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

Tonga

GPU Name

Antigua

Tonga XT (215-0851313)

GPU Variant

Antigua PRO (215-0877000)

GCN 3.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

5 billion

366 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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