AMD Radeon R9 380 OEM vs AMD Radeon R9 285X

VS

AMD Radeon R9 380 OEM

AMD Radeon R9 285X

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 380 OEM and 3GB VRAM Radeon R9 285X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 380 OEM 's Advantages

More VRAM (4GB vs 3GB)

Lower TDP (190W vs 200W)

AMD Radeon R9 285X 's Advantages

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

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 380 OEM

3.29 TFLOPS

Radeon R9 285X +24%

4.104 TFLOPS

Radeon R9 380 OEM

VS

Radeon R9 285X

Graphics Card

May 2015

Release Date

Unknown

Pirate Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

1375 MHz

Memory

4GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

176.0GB/s

Bandwidth

264.0GB/s

Render Config

28

Compute Units

32

-

1792

Shading Units

2048

112

TMUs

128

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

768 KB

-

Theoretical Performance

29.38 GPixel/s

Pixel Rate

32.06 GPixel/s

102.8 GTexel/s

Texture Rate

128.3 GTexel/s

3.290 TFLOPS

FP16 (half)

-

3.290 TFLOPS

FP32 (float)

4.104 TFLOPS

205.6 GFLOPS

FP64 (double)

-

Board Design

190W

TDP

200W

450 W

Suggested PSU

550 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

Tonga

Antigua PRO (215-0877000)

GPU Variant

Tonga XT (215-0851313)

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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