AMD Radeon HD 6850 X2 vs AMD Radeon Sky 500

VS

AMD Radeon HD 6850 X2

AMD Radeon Sky 500

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6850 X2 and 4GB VRAM Radeon Sky 500 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Sky 500 's Advantages

Released 1 years and 6 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (153.6GB/s vs 134.4GB/s)

320 additional rendering cores

Lower TDP (150W vs 254W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 X2

1.536 TFLOPS

Radeon Sky 500 +58%

2.432 TFLOPS

Radeon HD 6850 X2

VS

Radeon Sky 500

Graphics Card

Sep 2011

Release Date

Mar 2013

Northern Islands

Generation

Radeon Sky

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

1200 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

153.6GB/s

Render Config

12

Compute Units

20

-

960

Shading Units

1280

48

TMUs

80

32

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

30.40 GPixel/s

38.40 GTexel/s

Texture Rate

76.00 GTexel/s

-

1.536 TFLOPS

FP32 (float)

2.432 TFLOPS

-

FP64 (double)

152.0 GFLOPS

Board Design

254W

TDP

150W

600 W

Suggested PSU

450 W

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

Outputs

1x DisplayPort 1.2

2x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Barts

GPU Name

Pitcairn

Barts PRO (215-0798006)

GPU Variant

Pitcairn XT GL (215-0828073)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

2.8 billion

255 mm²

Die Size

212 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

5.0

Shader Model

5.1

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