AMD Radeon R9 380 OEM vs AMD Radeon HD 8870 OEM

VS

AMD Radeon R9 380 OEM

AMD Radeon HD 8870 OEM

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 380 OEM and 2GB VRAM Radeon HD 8870 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 380 OEM 's Advantages

Released 2 years and 4 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (176.0GB/s vs 153.6GB/s)

512 additional rendering cores

AMD Radeon HD 8870 OEM 's Advantages

Lower TDP (175W vs 190W)

Score

Benchmark

FP32 (float)

Radeon R9 380 OEM +28%

3.29 TFLOPS

Radeon HD 8870 OEM

2.56 TFLOPS

Radeon R9 380 OEM

VS

Radeon HD 8870 OEM

Graphics Card

May 2015

Release Date

Jan 2013

Pirate Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

1200 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

176.0GB/s

Bandwidth

153.6GB/s

Render Config

28

Compute Units

20

-

1792

Shading Units

1280

112

TMUs

80

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

29.38 GPixel/s

Pixel Rate

32.00 GPixel/s

102.8 GTexel/s

Texture Rate

80.00 GTexel/s

3.290 TFLOPS

FP16 (half)

-

3.290 TFLOPS

FP32 (float)

2.560 TFLOPS

205.6 GFLOPS

FP64 (double)

160.0 GFLOPS

Board Design

190W

TDP

175W

450 W

Suggested PSU

450 W

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

Outputs

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Antigua

GPU Name

Pitcairn

Antigua PRO (215-0877000)

GPU Variant

Pitcairn XT (215-0828047)

GCN 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

2.8 billion

366 mm²

Die Size

212 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.0

OpenCL

1.2

Vulkan

1.2

-

6.3

Shader Model

5.1

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