AMD Radeon R9 380X vs AMD Radeon R9 270 1024SP

VS

AMD Radeon R9 380X

AMD Radeon R9 270 1024SP

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 380X and 2GB VRAM Radeon R9 270 1024SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 380X 's Advantages

Released 8 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (182.4GB/s vs 153.6GB/s)

1024 additional rendering cores

AMD Radeon R9 270 1024SP 's Advantages

Boost Clock925MHz

Lower TDP (150W vs 190W)

Score

Benchmark

FP32 (float)

Radeon R9 380X +109%

3.973 TFLOPS

Radeon R9 270 1024SP

1.894 TFLOPS

Radeon R9 380X

VS

Radeon R9 270 1024SP

Graphics Card

Nov 2015

Release Date

Mar 2015

Pirate Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

900 MHz

-

Boost Clock

925 MHz

1425 MHz

Memory Clock

1200 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

182.4GB/s

Bandwidth

153.6GB/s

Render Config

32

Compute Units

16

-

2048

Shading Units

1024

128

TMUs

64

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

29.60 GPixel/s

124.2 GTexel/s

Texture Rate

59.20 GTexel/s

3.973 TFLOPS

FP16 (half)

-

3.973 TFLOPS

FP32 (float)

1.894 TFLOPS

248.3 GFLOPS

FP64 (double)

118.4 GFLOPS

Board Design

190W

TDP

150W

450 W

Suggested PSU

450 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

Graphics Processor

Antigua

GPU Name

Pitcairn

Antigua XT (215-0877016)

GPU Variant

Pitcairn PRO (215-0828062)

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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