AMD Radeon HD 6950 vs ATI Radeon HD 3850 X2

VS

AMD Radeon HD 6950

ATI Radeon HD 3850 X2

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6950 and 512MB VRAM Radeon HD 3850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6950 's Advantages

Released 2 years and 8 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (160.0GB/s vs 52.99GB/s)

1088 additional rendering cores

ATI Radeon HD 3850 X2 's Advantages

Lower TDP (140W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 6950 +426%

2.253 TFLOPS

Radeon HD 3850 X2

0.428 TFLOPS

Radeon HD 6950

VS

Radeon HD 3850 X2

Graphics Card

Dec 2010

Release Date

Apr 2008

Northern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

828 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

160.0GB/s

Bandwidth

52.99GB/s

Render Config

22

Compute Units

4

-

1408

Shading Units

320

88

TMUs

16

32

ROPs

16

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

256 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

10.70 GPixel/s

70.40 GTexel/s

Texture Rate

10.70 GTexel/s

-

2.253 TFLOPS

FP32 (float)

428.2 GFLOPS

563.2 GFLOPS

FP64 (double)

85.63 GFLOPS

Board Design

200W

TDP

140W

550 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

-

Graphics Processor

Cayman

GPU Name

RV670

Cayman PRO (215-0807019)

GPU Variant

RV670 PRO (215-0708003)

TeraScale 3

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

2.64 billion

Transistors

0.666 billion

389 mm²

Die Size

192 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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