AMD Radeon HD 6850 vs ATI Radeon HD 5870 Mac Edition

VS

AMD Radeon HD 6850

ATI Radeon HD 5870 Mac Edition

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6850 and 1024MB VRAM Radeon HD 5870 Mac Edition 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 228W)

ATI Radeon HD 5870 Mac Edition 's Advantages

Larger VRAM bandwidth (153.0GB/s vs 128.0GB/s)

640 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6850

1.488 TFLOPS

Radeon HD 5870 Mac Edition +82%

2.72 TFLOPS

Radeon HD 6850

VS

Radeon HD 5870 Mac Edition

Graphics Card

Oct 2010

Release Date

Jun 2010

Northern Islands

Generation

Evergreen

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

1195 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

128.0GB/s

Bandwidth

153.0GB/s

Render Config

12

Compute Units

20

-

960

Shading Units

1600

48

TMUs

80

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

27.20 GPixel/s

37.20 GTexel/s

Texture Rate

68.00 GTexel/s

-

1488 GFLOPS

FP32 (float)

2.720 TFLOPS

-

FP64 (double)

544.0 GFLOPS

Board Design

127W

TDP

228W

300 W

Suggested PSU

550 W

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

Outputs

1x DVI 2x mini-DisplayPort 1.1

1x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Barts

GPU Name

Cypress

Barts PRO (215-0798006)

GPU Variant

Cypress XT (215-0735033)

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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