AMD Radeon HD 6850 vs AMD Radeon HD 6870

VS

AMD Radeon HD 6850

AMD Radeon HD 6870

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6850 and 1024MB VRAM Radeon HD 6870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6850 's Advantages

Lower TDP (127W vs 151W)

AMD Radeon HD 6870 's Advantages

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

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6850

1.488 TFLOPS

Radeon HD 6870 +35%

2.016 TFLOPS

Radeon HD 6850

VS

Radeon HD 6870

Graphics Card

Oct 2010

Release Date

Oct 2010

Northern Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

1050 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

128.0GB/s

Bandwidth

134.4GB/s

Render Config

12

Compute Units

14

-

960

Shading Units

1120

48

TMUs

56

32

ROPs

32

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

24.80 GPixel/s

Pixel Rate

28.80 GPixel/s

37.20 GTexel/s

Texture Rate

50.40 GTexel/s

-

1488 GFLOPS

FP32 (float)

2.016 TFLOPS

-

Board Design

127W

TDP

151W

300 W

Suggested PSU

450 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

2x 6-pin

Graphics Processor

Barts

GPU Name

Barts

Barts PRO (215-0798006)

GPU Variant

Barts XT (215-0798000)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.7 billion

Transistors

1.7 billion

255 mm²

Die Size

255 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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