AMD Radeon HD 6870 1600SP Edition vs AMD Radeon HD 6490

VS

AMD Radeon HD 6870 1600SP Edition

AMD Radeon HD 6490

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 1600SP Edition and 1024MB VRAM Radeon HD 6490 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 1600SP Edition 's Advantages

Released 1 years and 6 months late

Larger VRAM bandwidth (134.4GB/s vs 16.00GB/s)

1280 additional rendering cores

AMD Radeon HD 6490 's Advantages

Lower TDP (39W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 1600SP Edition +672%

2.72 TFLOPS

Radeon HD 6490

0.352 TFLOPS

Radeon HD 6870 1600SP Edition

VS

Radeon HD 6490

Graphics Card

Jan 2013

Release Date

Jul 2011

Northern Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

500 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

16.00GB/s

Render Config

20

Compute Units

4

-

1600

Shading Units

320

80

TMUs

16

32

ROPs

8

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

4.400 GPixel/s

68.00 GTexel/s

Texture Rate

8.800 GTexel/s

-

2.720 TFLOPS

FP32 (float)

352.0 GFLOPS

544.0 GFLOPS

FP64 (double)

-

Board Design

175W

TDP

39W

450 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 6-pin

Power Connectors

None

Graphics Processor

Cypress

GPU Name

Redwood

Cypress XT (215-0735033)

GPU Variant

Redwood LE

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

2.154 billion

Transistors

0.627 billion

334 mm²

Die Size

104 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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