AMD Radeon R9 270X vs AMD Radeon R9 390 X2

VS

AMD Radeon R9 270X

AMD Radeon R9 390 X2

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270X and 8GB VRAM Radeon R9 390 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 270X 's Advantages

Boost Clock1050MHz

Lower TDP (180W vs 580W)

AMD Radeon R9 390 X2 's Advantages

Released 1 years and 11 months late

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (345.6GB/s vs 179.2GB/s)

1280 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 270X

2.688 TFLOPS

Radeon R9 390 X2 +90%

5.12 TFLOPS

Radeon R9 270X

VS

Radeon R9 390 X2

Graphics Card

Oct 2013

Release Date

Sep 2015

Volcanic Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1000 MHz

Base Clock

-

1050 MHz

Boost Clock

-

1400 MHz

Memory Clock

1350 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

512bit

179.2GB/s

Bandwidth

345.6GB/s

Render Config

20

Compute Units

40

-

1280

Shading Units

2560

80

TMUs

160

32

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

33.60 GPixel/s

Pixel Rate

64.00 GPixel/s

84.00 GTexel/s

Texture Rate

160.0 GTexel/s

-

2.688 TFLOPS

FP32 (float)

5.120 TFLOPS

168.0 GFLOPS

FP64 (double)

640.0 GFLOPS

Board Design

180W

TDP

580W

450 W

Suggested PSU

950 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

4x 8-pin

Graphics Processor

Curacao

GPU Name

Grenada

Curacao XT (215-0848004)

GPU Variant

Grenada PRO (215-0880030)

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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