ATI Radeon HD 5870 vs AMD Radeon HD 6770

VS

ATI Radeon HD 5870

AMD Radeon HD 6770

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 5870 and 1024MB VRAM Radeon HD 6770 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 5870 's Advantages

Larger VRAM bandwidth (153.6GB/s vs 76.80GB/s)

800 additional rendering cores

AMD Radeon HD 6770 's Advantages

Released 1 years and 4 months late

Lower TDP (108W vs 188W)

Score

Benchmark

FP32 (float)

Radeon HD 5870 +100%

2.72 TFLOPS

Radeon HD 6770

1.36 TFLOPS

Radeon HD 5870

VS

Radeon HD 6770

Graphics Card

Sep 2009

Release Date

Jan 2011

Evergreen

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

1200 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

76.80GB/s

Render Config

20

Compute Units

10

-

1600

Shading Units

800

80

TMUs

40

32

ROPs

16

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

13.60 GPixel/s

68.00 GTexel/s

Texture Rate

34.00 GTexel/s

-

2.720 TFLOPS

FP32 (float)

1360 GFLOPS

544.0 GFLOPS

FP64 (double)

-

Board Design

188W

TDP

108W

450 W

Suggested PSU

300 W

2x DVI 1x HDMI 1.3a 1x 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

Juniper

Cypress XT (215-0735033)

GPU Variant

Juniper XT (215-0754013)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

2.154 billion

Transistors

1.04 billion

334 mm²

Die Size

166 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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