ATI Radeon HD 5970 vs AMD Radeon HD 6870

VS

ATI Radeon HD 5970

AMD Radeon HD 6870

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

Main Differences

ATI Radeon HD 5970 's Advantages

480 additional rendering cores

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)

Score

Benchmark

FP32 (float)

ATI Radeon HD 5970 +15%

2.32 TFLOPS

Radeon HD 6870

2.016 TFLOPS

ATI Radeon HD 5970

VS

Radeon HD 6870

Graphics Card

Nov 2009

Release Date

Oct 2010

Evergreen

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

20

Compute Units

14

-

1600

Shading Units

1120

80

TMUs

56

32

ROPs

32

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

23.20 GPixel/s

Pixel Rate

28.80 GPixel/s

58.00 GTexel/s

Texture Rate

50.40 GTexel/s

-

2.320 TFLOPS

FP32 (float)

2.016 TFLOPS

464.0 GFLOPS

FP64 (double)

-

Board Design

294W

TDP

151W

600 W

Suggested PSU

450 W

2x DVI 1x mini-DisplayPort 1.1

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Hemlock

GPU Name

Barts

Hemlock XT (215-0735075)

GPU Variant

Barts XT (215-0798000)

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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