AMD Radeon HD 7970 vs ATI Radeon HD 5450

VS

AMD Radeon HD 7970

ATI Radeon HD 5450

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 and 512MB VRAM Radeon HD 5450 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970 's Advantages

Released 1 years and 10 months late

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (264.0GB/s vs 6.400GB/s)

1968 additional rendering cores

ATI Radeon HD 5450 's Advantages

Lower TDP (19W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 +3543%

3.789 TFLOPS

Radeon HD 5450

0.104 TFLOPS

Radeon HD 7970

VS

Radeon HD 5450

Graphics Card

Dec 2011

Release Date

Feb 2010

Southern Islands

Generation

Evergreen

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

400 MHz

Memory

3GB

Memory Size

512MB

GDDR5

Memory Type

DDR2

384bit

Memory Bus

64bit

264.0GB/s

Bandwidth

6.400GB/s

Render Config

32

Compute Units

2

-

2048

Shading Units

80

128

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

768 KB

L2 Cache

128 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

2.600 GPixel/s

118.4 GTexel/s

Texture Rate

5.200 GTexel/s

-

3.789 TFLOPS

FP32 (float)

104.0 GFLOPS

947.2 GFLOPS

FP64 (double)

-

Board Design

250W

TDP

19W

600 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

Cedar

Tahiti XT (215-0821060)

GPU Variant

Cedar PRO

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

0.292 billion

352 mm²

Die Size

59 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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