AMD Radeon HD 6850 X2 vs ATI Radeon HD 5850

VS

AMD Radeon HD 6850 X2

ATI Radeon HD 5850

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6850 X2 and 1024MB VRAM Radeon HD 5850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6850 X2 's Advantages

Released 2 years late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (134.4GB/s vs 128.0GB/s)

ATI Radeon HD 5850 's Advantages

480 additional rendering cores

Lower TDP (151W vs 254W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 X2

1.536 TFLOPS

Radeon HD 5850 +35%

2.088 TFLOPS

Radeon HD 6850 X2

VS

Radeon HD 5850

Graphics Card

Sep 2011

Release Date

Sep 2009

Northern Islands

Generation

Evergreen

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

128.0GB/s

Render Config

12

Compute Units

18

-

960

Shading Units

1440

48

TMUs

72

32

ROPs

32

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

23.20 GPixel/s

38.40 GTexel/s

Texture Rate

52.20 GTexel/s

-

1.536 TFLOPS

FP32 (float)

2.088 TFLOPS

-

FP64 (double)

417.6 GFLOPS

Board Design

254W

TDP

151W

600 W

Suggested PSU

450 W

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

Outputs

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

2x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Barts

GPU Name

Cypress

Barts PRO (215-0798006)

GPU Variant

Cypress PRO (215-0735043)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.7 billion

Transistors

2.154 billion

255 mm²

Die Size

334 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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