AMD Radeon R9 270 1024SP vs AMD Radeon R9 390X

VS

AMD Radeon R9 270 1024SP

AMD Radeon R9 390X

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270 1024SP and 8GB VRAM Radeon R9 390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 270 1024SP 's Advantages

Boost Clock925MHz

Lower TDP (150W vs 275W)

AMD Radeon R9 390X 's Advantages

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (384.0GB/s vs 153.6GB/s)

1792 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 270 1024SP

1.894 TFLOPS

Radeon R9 390X +212%

5.914 TFLOPS

Radeon R9 270 1024SP

VS

Radeon R9 390X

Graphics Card

Mar 2015

Release Date

Jun 2015

Volcanic Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

900 MHz

Base Clock

-

925 MHz

Boost Clock

-

1200 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

512bit

153.6GB/s

Bandwidth

384.0GB/s

Render Config

16

Compute Units

44

-

1024

Shading Units

2816

64

TMUs

176

32

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

67.20 GPixel/s

59.20 GTexel/s

Texture Rate

184.8 GTexel/s

-

1.894 TFLOPS

FP32 (float)

5.914 TFLOPS

118.4 GFLOPS

FP64 (double)

739.2 GFLOPS

Board Design

150W

TDP

275W

450 W

Suggested PSU

600 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Pitcairn

GPU Name

Grenada

Pitcairn PRO (215-0828062)

GPU Variant

Grenada XT (215-0880004)

GCN 1.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

6.2 billion

212 mm²

Die Size

438 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.0

1.2

Vulkan

1.2

-

5.1

Shader Model

6.3

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