AMD Radeon HD 6970 vs ATI Radeon HD 3550

VS

AMD Radeon HD 6970

ATI Radeon HD 3550

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6970 and 512MB VRAM Radeon HD 3550 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970 's Advantages

Released 2 years and 4 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (176.0GB/s vs 6.336GB/s)

1496 additional rendering cores

ATI Radeon HD 3550 's Advantages

Lower TDP (30W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 6970 +5531%

2.703 TFLOPS

Radeon HD 3550

0.048 TFLOPS

Radeon HD 6970

VS

Radeon HD 3550

Graphics Card

Dec 2010

Release Date

Aug 2008

Northern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

396 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

176.0GB/s

Bandwidth

6.336GB/s

Render Config

24

Compute Units

2

-

1536

Shading Units

40

96

TMUs

4

32

ROPs

4

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

64 KB

-

Theoretical Performance

28.16 GPixel/s

Pixel Rate

2.376 GPixel/s

84.48 GTexel/s

Texture Rate

2.376 GTexel/s

-

2.703 TFLOPS

FP32 (float)

47.52 GFLOPS

675.8 GFLOPS

FP64 (double)

-

Board Design

250W

TDP

30W

600 W

Suggested PSU

200 W

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

Outputs

2x DisplayPort

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

Cayman

GPU Name

RV620

Cayman XT (215-0807007)

GPU Variant

RV620 PRO (215-0670006)

TeraScale 3

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

2.64 billion

Transistors

0.181 billion

389 mm²

Die Size

67 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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