AMD Radeon HD 6870 vs AMD Radeon R9 380 OEM

VS

AMD Radeon HD 6870

AMD Radeon R9 380 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 4GB VRAM Radeon R9 380 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 's Advantages

Lower TDP (151W vs 190W)

AMD Radeon R9 380 OEM 's Advantages

Released 4 years and 7 months late

More VRAM (4GB vs 1024GB)

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

672 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6870

2.016 TFLOPS

Radeon R9 380 OEM +63%

3.29 TFLOPS

Radeon HD 6870

VS

Radeon R9 380 OEM

Graphics Card

Oct 2010

Release Date

May 2015

Northern Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

1375 MHz

Memory

1024MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

176.0GB/s

Render Config

14

Compute Units

28

-

1120

Shading Units

1792

56

TMUs

112

32

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

29.38 GPixel/s

50.40 GTexel/s

Texture Rate

102.8 GTexel/s

-

FP16 (half)

3.290 TFLOPS

2.016 TFLOPS

FP32 (float)

3.290 TFLOPS

-

FP64 (double)

205.6 GFLOPS

Board Design

151W

TDP

190W

450 W

Suggested PSU

450 W

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

Outputs

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Barts

GPU Name

Antigua

Barts XT (215-0798000)

GPU Variant

Antigua PRO (215-0877000)

TeraScale 2

Architecture

GCN 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

5 billion

255 mm²

Die Size

366 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.0

N/A

Vulkan

1.2

-

5.0

Shader Model

6.3

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