AMD Radeon R9 270X vs AMD Radeon HD 7970 X2

VS

AMD Radeon R9 270X AMD Radeon HD 7970 X2

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270X and 3GB VRAM Radeon HD 7970 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 270X 's Advantages

Released 1 years and 2 months late

Boost Clock1050MHz

Lower TDP (180W vs 500W)

AMD Radeon HD 7970 X2 's Advantages

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (264.0GB/s vs 179.2GB/s)

768 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 270X

2.688 TFLOPS

Radeon HD 7970 X2 +40%

3.789 TFLOPS

Radeon R9 270X

VS

Radeon HD 7970 X2

Graphics Card

Oct 2013

Release Date

Aug 2012

Volcanic Islands

Generation

Southern 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

1375 MHz

Memory

2GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

179.2GB/s

Bandwidth

264.0GB/s

Render Config

-

SM Count

-

20

Compute Units

32

1280

Shading Units

2048

80

TMUs

128

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

768 KB

Theoretical Performance

33.60 GPixel/s

Pixel Rate

29.60 GPixel/s

84.00 GTexel/s

Texture Rate

118.4 GTexel/s

-

FP16 (half)

-

2.688 TFLOPS

FP32 (float)

3.789 TFLOPS

168.0 GFLOPS

FP64 (double)

947.2 GFLOPS

Graphics Processor

Curacao

GPU Name

New Zealand

Curacao XT (215-0848004)

GPU Variant

-

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

4.313 billion

212 mm²

Die Size

352 mm²

Board Design

180W

TDP

500W

450 W

Suggested PSU

900 W

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

Outputs

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

2x 6-pin

Power Connectors

3x 8-pin

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

5.1

Shader Model

5.1

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