NVIDIA GeForce GTX 660 Rev. 2 vs AMD Radeon HD 7950 Monica BIOS 1

VS

NVIDIA GeForce GTX 660 Rev. 2

AMD Radeon HD 7950 Monica BIOS 1

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 3GB VRAM Radeon HD 7950 Monica BIOS 1 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 2 years and 8 months late

Boost Clock1032MHz

Lower TDP (140W vs 185W)

AMD Radeon HD 7950 Monica BIOS 1 's Advantages

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (240.0GB/s vs 144.2GB/s)

576 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660 Rev. 2

1.981 TFLOPS

Radeon HD 7950 Monica BIOS 1 +43%

2.842 TFLOPS

GeForce GTX 660 Rev. 2

VS

Radeon HD 7950 Monica BIOS 1

Graphics Card

Sep 2014

Release Date

Jan 2012

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

1250 MHz

Memory

2GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

384bit

144.2GB/s

Bandwidth

240.0GB/s

Render Config

-

Compute Units

24

-

960

Shading Units

1536

80

TMUs

96

24

ROPs

32

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

768 KB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

29.60 GPixel/s

82.56 GTexel/s

Texture Rate

88.80 GTexel/s

-

1.981 TFLOPS

FP32 (float)

2.842 TFLOPS

82.56 GFLOPS

FP64 (double)

710.4 GFLOPS

Board Design

140W

TDP

185W

300 W

Suggested PSU

450 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 + 1x 8-pin

Graphics Processor

GK104

GPU Name

Tahiti

-

GPU Variant

Tahiti PRO (215-0821056)

Kepler

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

4.313 billion

294 mm²

Die Size

352 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

5.1

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