AMD Radeon HD 6770 Green Edition vs AMD Radeon HD 8870 OEM

VS

AMD Radeon HD 6770 Green Edition AMD Radeon HD 8870 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6770 Green Edition and 2GB VRAM Radeon HD 8870 OEM 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

Lower TDP (86W vs 175W)

AMD Radeon HD 8870 OEM 's Advantages

Larger VRAM bandwidth (153.6GB/s vs 21.34GB/s)

560 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6770 Green Edition

1.008 TFLOPS

Radeon HD 8870 OEM +153%

2.56 TFLOPS

Radeon HD 6770 Green Edition

VS

Radeon HD 8870 OEM

Graphics Card

Apr 2013

Release Date

Jan 2013

Northern Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

667 MHz

Memory Clock

1200 MHz

Memory

2GB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

21.34GB/s

Bandwidth

153.6GB/s

Render Config

-

SM Count

-

9

Compute Units

20

720

Shading Units

1280

36

TMUs

80

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

Theoretical Performance

11.20 GPixel/s

Pixel Rate

32.00 GPixel/s

25.20 GTexel/s

Texture Rate

80.00 GTexel/s

-

FP16 (half)

-

1008 GFLOPS

FP32 (float)

2.560 TFLOPS

-

FP64 (double)

160.0 GFLOPS

Graphics Processor

Juniper

GPU Name

Pitcairn

Juniper LE (215-0754009)

GPU Variant

Pitcairn XT (215-0828047)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.04 billion

Transistors

2.8 billion

166 mm²

Die Size

212 mm²

Board Design

86W

TDP

175W

250 W

Suggested PSU

450 W

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

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

-

Power Connectors

2x 6-pin

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

CUDA

-

5.0

Shader Model

5.1

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