NVIDIA GeForce GTX 660 Rev. 2 vs AMD Radeon HD 7790

VS

NVIDIA GeForce GTX 660 Rev. 2

AMD Radeon HD 7790

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 1024MB VRAM Radeon HD 7790 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

Released 1 years and 6 months late

Boost Clock1032MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (144.2GB/s vs 96.00GB/s)

64 additional rendering cores

AMD Radeon HD 7790 's Advantages

Lower TDP (85W vs 140W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 Rev. 2 +10%

1.981 TFLOPS

Radeon HD 7790

1.792 TFLOPS

GeForce GTX 660 Rev. 2

VS

Radeon HD 7790

Graphics Card

Sep 2014

Release Date

Mar 2013

GeForce 600

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

980 MHz

Base Clock

-

1032 MHz

Boost Clock

-

1502 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

128bit

144.2GB/s

Bandwidth

96.00GB/s

Render Config

-

Compute Units

14

-

960

Shading Units

896

80

TMUs

56

24

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

256 KB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

16.00 GPixel/s

82.56 GTexel/s

Texture Rate

56.00 GTexel/s

-

1.981 TFLOPS

FP32 (float)

1.792 TFLOPS

82.56 GFLOPS

FP64 (double)

112.0 GFLOPS

Board Design

140W

TDP

85W

300 W

Suggested PSU

250 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

GK104

GPU Name

Bonaire

-

GPU Variant

Bonaire XT (215-0839039)

Kepler

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

2.08 billion

294 mm²

Die Size

160 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.0

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

6.3

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