AMD Radeon HD 7970 vs AMD Radeon RX 480

VS

AMD Radeon HD 7970

AMD Radeon RX 480

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 and 8GB VRAM Radeon RX 480 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970 's Advantages

Larger VRAM bandwidth (264.0GB/s vs 256.0GB/s)

AMD Radeon RX 480 's Advantages

Released 4 years and 6 months late

Boost Clock1266MHz

More VRAM (8GB vs 3GB)

256 additional rendering cores

Lower TDP (150W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 7970

3.789 TFLOPS

Radeon RX 480 +53%

5.834 TFLOPS

3DMark Time Spy

Radeon HD 7970

2279

Radeon RX 480 +82%

4164

Radeon HD 7970

VS

Radeon RX 480

Graphics Card

Dec 2011

Release Date

Jun 2016

Southern Islands

Generation

Arctic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1120 MHz

-

Boost Clock

1266 MHz

1375 MHz

Memory Clock

2000 MHz

Memory

3GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

264.0GB/s

Bandwidth

256.0GB/s

Render Config

32

Compute Units

36

-

2048

Shading Units

2304

128

TMUs

144

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

2 MB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

40.51 GPixel/s

118.4 GTexel/s

Texture Rate

182.3 GTexel/s

-

FP16 (half)

5.834 TFLOPS

3.789 TFLOPS

FP32 (float)

5.834 TFLOPS

947.2 GFLOPS

FP64 (double)

364.6 GFLOPS

Board Design

250W

TDP

150W

600 W

Suggested PSU

450 W

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

Outputs

1x HDMI 2.0b 3x DisplayPort 1.4a

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Tahiti

GPU Name

Ellesmere

Tahiti XT (215-0821060)

GPU Variant

Polaris 10 XT (215-0876184)

GCN 1.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

4.313 billion

Transistors

5.7 billion

352 mm²

Die Size

232 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2

-

5.1

Shader Model

6.4

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