AMD Radeon HD 6970 vs ATI Radeon HD 5450

VS

AMD Radeon HD 6970

ATI Radeon HD 5450

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6970 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 6970 's Advantages

Released 10 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (176.0GB/s vs 6.400GB/s)

1456 additional rendering cores

ATI Radeon HD 5450 's Advantages

Lower TDP (19W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 6970 +2499%

2.703 TFLOPS

Radeon HD 5450

0.104 TFLOPS

Radeon HD 6970

VS

Radeon HD 5450

Graphics Card

Dec 2010

Release Date

Feb 2010

Northern Islands

Generation

Evergreen

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

400 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

176.0GB/s

Bandwidth

6.400GB/s

Render Config

24

Compute Units

2

-

1536

Shading Units

80

96

TMUs

8

32

ROPs

4

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

28.16 GPixel/s

Pixel Rate

2.600 GPixel/s

84.48 GTexel/s

Texture Rate

5.200 GTexel/s

-

2.703 TFLOPS

FP32 (float)

104.0 GFLOPS

675.8 GFLOPS

FP64 (double)

-

Board Design

250W

TDP

19W

600 W

Suggested PSU

200 W

2x 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

Cayman

GPU Name

Cedar

Cayman XT (215-0807007)

GPU Variant

Cedar PRO

TeraScale 3

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

2.64 billion

Transistors

0.292 billion

389 mm²

Die Size

59 mm²

Graphics Features

11.2 (11_0)

DirectX

11.2 (11_0)

4.4

OpenGL

4.4

1.2

OpenCL

1.2

N/A

Vulkan

N/A

-

5.0

Shader Model

5.0

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