AMD Radeon R9 380X vs AMD Radeon HD 7870 XT

VS

AMD Radeon R9 380X

AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 380X and 2GB VRAM Radeon HD 7870 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 380X 's Advantages

Released 3 years late

More VRAM (4GB vs 2GB)

512 additional rendering cores

AMD Radeon HD 7870 XT 's Advantages

Boost Clock975MHz

Larger VRAM bandwidth (192.0GB/s vs 182.4GB/s)

Lower TDP (185W vs 190W)

Score

Benchmark

FP32 (float)

Radeon R9 380X +32%

3.973 TFLOPS

Radeon HD 7870 XT

2.995 TFLOPS

Radeon R9 380X

VS

Radeon HD 7870 XT

Graphics Card

Nov 2015

Release Date

Nov 2012

Pirate Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

975 MHz

1425 MHz

Memory Clock

1500 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

182.4GB/s

Bandwidth

192.0GB/s

Render Config

32

Compute Units

24

-

2048

Shading Units

1536

128

TMUs

96

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

31.04 GPixel/s

Pixel Rate

31.20 GPixel/s

124.2 GTexel/s

Texture Rate

93.60 GTexel/s

3.973 TFLOPS

FP16 (half)

-

3.973 TFLOPS

FP32 (float)

2.995 TFLOPS

248.3 GFLOPS

FP64 (double)

748.8 GFLOPS

Board Design

190W

TDP

185W

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

Tahiti

Antigua XT (215-0877016)

GPU Variant

Tahiti LE (215-0821122)

GCN 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

4.313 billion

366 mm²

Die Size

352 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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