AMD Radeon HD 6850 vs AMD Radeon HD 6770 Green Edition

VS

AMD Radeon HD 6850

AMD Radeon HD 6770 Green Edition

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6850 and 2GB VRAM Radeon HD 6770 Green Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6850 's Advantages

Larger VRAM bandwidth (128.0GB/s vs 21.34GB/s)

240 additional rendering cores

AMD Radeon HD 6770 Green Edition 's Advantages

Released 2 years and 6 months late

More VRAM (2GB vs 1024GB)

Lower TDP (86W vs 127W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 +47%

1.488 TFLOPS

Radeon HD 6770 Green Edition

1.008 TFLOPS

Radeon HD 6850

VS

Radeon HD 6770 Green Edition

Graphics Card

Oct 2010

Release Date

Apr 2013

Northern Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

667 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

128.0GB/s

Bandwidth

21.34GB/s

Render Config

12

Compute Units

9

-

960

Shading Units

720

48

TMUs

36

32

ROPs

16

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

24.80 GPixel/s

Pixel Rate

11.20 GPixel/s

37.20 GTexel/s

Texture Rate

25.20 GTexel/s

-

1488 GFLOPS

FP32 (float)

1008 GFLOPS

-

Board Design

127W

TDP

86W

300 W

Suggested PSU

250 W

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

Outputs

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

1x 6-pin

Power Connectors

-

Graphics Processor

Barts

GPU Name

Juniper

Barts PRO (215-0798006)

GPU Variant

Juniper LE (215-0754009)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.7 billion

Transistors

1.04 billion

255 mm²

Die Size

166 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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