AMD Radeon HD 6870 vs ATI Radeon HD 5870 Eyefinity 6

VS

AMD Radeon HD 6870

ATI Radeon HD 5870 Eyefinity 6

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 2GB VRAM Radeon HD 5870 Eyefinity 6 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 's Advantages

Released 7 months late

Lower TDP (151W vs 228W)

ATI Radeon HD 5870 Eyefinity 6 's Advantages

More VRAM (2GB vs 1024GB)

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

480 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6870

2.016 TFLOPS

Radeon HD 5870 Eyefinity 6 +34%

2.72 TFLOPS

Radeon HD 6870

VS

Radeon HD 5870 Eyefinity 6

Graphics Card

Oct 2010

Release Date

Mar 2010

Northern Islands

Generation

Evergreen

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

1200 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

153.6GB/s

Render Config

14

Compute Units

20

-

1120

Shading Units

1600

56

TMUs

80

32

ROPs

32

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

27.20 GPixel/s

50.40 GTexel/s

Texture Rate

68.00 GTexel/s

-

2.016 TFLOPS

FP32 (float)

2.720 TFLOPS

-

FP64 (double)

544.0 GFLOPS

Board Design

151W

TDP

228W

450 W

Suggested PSU

550 W

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

Outputs

6x mini-DisplayPort 1.1

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Barts

GPU Name

Cypress

Barts XT (215-0798000)

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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