AMD Radeon R9 380 vs AMD Radeon HD 6870 X2

VS

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 380 and 1024MB VRAM Radeon HD 6870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 380 's Advantages

Released 3 years and 11 months late

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (176.0GB/s vs 134.4GB/s)

672 additional rendering cores

Lower TDP (190W vs 300W)

Score

Benchmark

FP32 (float)

Radeon R9 380 +72%

3.476 TFLOPS

Radeon HD 6870 X2

2.016 TFLOPS

Radeon R9 380

VS

Radeon HD 6870 X2

Graphics Card

Jun 2015

Release Date

Jul 2011

Pirate Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1375 MHz

Memory Clock

1050 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

176.0GB/s

Bandwidth

134.4GB/s

Render Config

-

SM Count

-

28

Compute Units

14

1792

Shading Units

1120

112

TMUs

56

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

Theoretical Performance

31.04 GPixel/s

Pixel Rate

28.80 GPixel/s

108.6 GTexel/s

Texture Rate

50.40 GTexel/s

3.476 TFLOPS

FP16 (half)

-

3.476 TFLOPS

FP32 (float)

2.016 TFLOPS

217.3 GFLOPS

FP64 (double)

-

Graphics Processor

Antigua

GPU Name

Barts

Antigua PRO (215-0877000)

GPU Variant

Barts XT (215-0798000)

GCN 3.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

5 billion

Transistors

1.7 billion

366 mm²

Die Size

255 mm²

Board Design

190W

TDP

300W

450 W

Suggested PSU

700 W

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

Outputs

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

2x 6-pin

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.0

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

6.3

Shader Model

5.0

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