AMD Radeon HD 6870 vs ATI Radeon HD 5970

VS

AMD Radeon HD 6870

ATI Radeon HD 5970

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 1024MB VRAM ATI Radeon HD 5970 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 's Advantages

Released 11 months late

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

Lower TDP (151W vs 294W)

ATI Radeon HD 5970 's Advantages

480 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6870

2.016 TFLOPS

ATI Radeon HD 5970 +15%

2.32 TFLOPS

Radeon HD 6870

VS

ATI Radeon HD 5970

Graphics Card

Oct 2010

Release Date

Nov 2009

Northern Islands

Generation

Evergreen

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

128.0GB/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

23.20 GPixel/s

50.40 GTexel/s

Texture Rate

58.00 GTexel/s

-

2.016 TFLOPS

FP32 (float)

2.320 TFLOPS

-

FP64 (double)

464.0 GFLOPS

Board Design

151W

TDP

294W

450 W

Suggested PSU

600 W

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

Outputs

2x DVI 1x mini-DisplayPort 1.1

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Barts

GPU Name

Hemlock

Barts XT (215-0798000)

GPU Variant

Hemlock XT (215-0735075)

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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