AMD Radeon HD 6770 Green Edition vs ATI Radeon HD 3870 Mac Edition

VS

AMD Radeon HD 6770 Green Edition ATI Radeon HD 3870 Mac Edition

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6770 Green Edition and 512MB VRAM Radeon HD 3870 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6770 Green Edition 's Advantages

Released 4 years and 10 months late

400 additional rendering cores

Lower TDP (86W vs 106W)

ATI Radeon HD 3870 Mac Edition 's Advantages

Larger VRAM bandwidth (72.06GB/s vs 21.34GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 6770 Green Edition +102%

1.008 TFLOPS

Radeon HD 3870 Mac Edition

0.497 TFLOPS

Radeon HD 6770 Green Edition

VS

Radeon HD 3870 Mac Edition

Graphics Card

Apr 2013

Release Date

Jun 2008

Northern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

667 MHz

Memory Clock

1126 MHz

Memory

2GB

Memory Size

512MB

GDDR3

Memory Type

GDDR4

128bit

Memory Bus

256bit

21.34GB/s

Bandwidth

72.06GB/s

Render Config

-

SM Count

-

9

Compute Units

4

720

Shading Units

320

36

TMUs

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

256 KB

Theoretical Performance

11.20 GPixel/s

Pixel Rate

12.43 GPixel/s

25.20 GTexel/s

Texture Rate

12.43 GTexel/s

-

FP16 (half)

-

1008 GFLOPS

FP32 (float)

497.3 GFLOPS

-

FP64 (double)

99.46 GFLOPS

Graphics Processor

Juniper

GPU Name

RV670

Juniper LE (215-0754009)

GPU Variant

RV670 XT (215-0708005)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.04 billion

Transistors

0.666 billion

166 mm²

Die Size

192 mm²

Board Design

86W

TDP

106W

250 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x S-Video

-

Power Connectors

1x 6-pin

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

Vulkan

N/A

-

CUDA

-

5.0

Shader Model

4.1

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