ATI Radeon HD 5870 Mac Edition vs AMD Radeon HD 6850

VS

ATI Radeon HD 5870 Mac Edition

AMD Radeon HD 6850

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 5870 Mac Edition and 1024MB VRAM Radeon HD 6850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 5870 Mac Edition 's Advantages

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

640 additional rendering cores

AMD Radeon HD 6850 's Advantages

Lower TDP (127W vs 228W)

Score

Benchmark

FP32 (float)

Radeon HD 5870 Mac Edition +82%

2.72 TFLOPS

Radeon HD 6850

1.488 TFLOPS

Radeon HD 5870 Mac Edition

VS

Radeon HD 6850

Graphics Card

Jun 2010

Release Date

Oct 2010

Evergreen

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1195 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

153.0GB/s

Bandwidth

128.0GB/s

Render Config

20

Compute Units

12

-

1600

Shading Units

960

80

TMUs

48

32

ROPs

32

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

24.80 GPixel/s

68.00 GTexel/s

Texture Rate

37.20 GTexel/s

-

2.720 TFLOPS

FP32 (float)

1488 GFLOPS

544.0 GFLOPS

FP64 (double)

-

Board Design

228W

TDP

127W

550 W

Suggested PSU

300 W

1x DVI 2x mini-DisplayPort 1.1

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Cypress

GPU Name

Barts

Cypress XT (215-0735033)

GPU Variant

Barts PRO (215-0798006)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

2.154 billion

Transistors

1.7 billion

334 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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