AMD Radeon RX 455 OEM vs AMD Radeon HD 7970 GHz Edition

VS

AMD Radeon RX 455 OEM AMD Radeon HD 7970 GHz Edition

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 455 OEM and 3GB VRAM Radeon HD 7970 GHz Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 455 OEM 's Advantages

Released 4 years late

Lower TDP (100W vs 300W)

AMD Radeon HD 7970 GHz Edition 's Advantages

Boost Clock1050MHz

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.0GB/s vs 104.0GB/s)

1280 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 455 OEM

1.613 TFLOPS

Radeon HD 7970 GHz Edition +166%

4.301 TFLOPS

Radeon RX 455 OEM

VS

Radeon HD 7970 GHz Edition

Graphics Card

Jun 2016

Release Date

Jun 2012

Arctic Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1000 MHz

-

Boost Clock

1050 MHz

1625 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

384bit

104.0GB/s

Bandwidth

288.0GB/s

Render Config

-

SM Count

-

12

Compute Units

32

768

Shading Units

2048

48

TMUs

128

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

Theoretical Performance

16.80 GPixel/s

Pixel Rate

33.60 GPixel/s

50.40 GTexel/s

Texture Rate

134.4 GTexel/s

-

FP16 (half)

-

1.613 TFLOPS

FP32 (float)

4.301 TFLOPS

100.8 GFLOPS

FP64 (double)

1075 GFLOPS

Graphics Processor

Tobago

GPU Name

Tahiti

Tobago PRO (215-0875010)

GPU Variant

Tahiti XT2 (215-0821065)

GCN 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

4.313 billion

160 mm²

Die Size

352 mm²

Board Design

100W

TDP

300W

300 W

Suggested PSU

700 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.0

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

6.3

Shader Model

5.1

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