NVIDIA GeForce GTX 660 OEM vs AMD Radeon HD 6770 Green Edition

VS

NVIDIA GeForce GTX 660 OEM AMD Radeon HD 6770 Green Edition

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 660 OEM and 2GB VRAM Radeon HD 6770 Green Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 OEM 's Advantages

Boost Clock888MHz

Larger VRAM bandwidth (134.4GB/s vs 21.34GB/s)

432 additional rendering cores

AMD Radeon HD 6770 Green Edition 's Advantages

Released 8 months late

More VRAM (2GB vs 1GB)

Lower TDP (86W vs 130W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 OEM +102%

2.046 TFLOPS

Radeon HD 6770 Green Edition

1.008 TFLOPS

GeForce GTX 660 OEM

VS

Radeon HD 6770 Green Edition

Graphics Card

Aug 2012

Release Date

Apr 2013

GeForce 600

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

823 MHz

Base Clock

-

888 MHz

Boost Clock

-

1400 MHz

Memory Clock

667 MHz

Memory

1536MB

Memory Size

2GB

GDDR5

Memory Type

GDDR3

192bit

Memory Bus

128bit

134.4GB/s

Bandwidth

21.34GB/s

Render Config

-

SM Count

-

Compute Units

9

1152

Shading Units

720

96

TMUs

36

24

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

384 KB

L2 Cache

256 KB

Theoretical Performance

21.31 GPixel/s

Pixel Rate

11.20 GPixel/s

85.25 GTexel/s

Texture Rate

25.20 GTexel/s

-

FP16 (half)

-

2.046 TFLOPS

FP32 (float)

1008 GFLOPS

85.25 GFLOPS

FP64 (double)

-

Graphics Processor

GK104

GPU Name

Juniper

GK104-200-KD-A2

GPU Variant

Juniper LE (215-0754009)

Kepler

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

3.54 billion

Transistors

1.04 billion

294 mm²

Die Size

166 mm²

Board Design

130W

TDP

86W

300 W

Suggested PSU

250 W

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

Outputs

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

1x 6-pin

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

5.0

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