NVIDIA A40 PCIe vs NVIDIA GeForce GTX 660 Rev. 2

VS

NVIDIA A40 PCIe NVIDIA GeForce GTX 660 Rev. 2

We compared two Desktop platform GPUs: 48GB VRAM A40 PCIe and 2GB VRAM GeForce GTX 660 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA A40 PCIe 's Advantages

Released 6 years and 1 months late

Boost Clock has increased by 69% (1740MHz vs 1032MHz)

More VRAM (48GB vs 2GB)

Larger VRAM bandwidth (695.8GB/s vs 144.2GB/s)

9792 additional rendering cores

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

Lower TDP (140W vs 300W)

Score

Benchmark

FP32 (float)

A40 PCIe +1788%

37.42 TFLOPS

GeForce GTX 660 Rev. 2

1.981 TFLOPS

A40 PCIe

VS

GeForce GTX 660 Rev. 2

Graphics Card

Oct 2020

Release Date

Sep 2014

Tesla

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1305 MHz

Base Clock

980 MHz

1740 MHz

Boost Clock

1032 MHz

1812 MHz

Memory Clock

1502 MHz

Memory

48GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

384bit

Memory Bus

192bit

695.8GB/s

Bandwidth

144.2GB/s

Render Config

84

SM Count

-

Compute Units

-

10752

Shading Units

960

336

TMUs

80

112

ROPs

24

336

Tensor Cores

-

84

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per SMX)

6 MB

L2 Cache

384 KB

Theoretical Performance

194.9 GPixel/s

Pixel Rate

20.64 GPixel/s

584.6 GTexel/s

Texture Rate

82.56 GTexel/s

37.42 TFLOPS

FP16 (half)

-

37.42 TFLOPS

FP32 (float)

1.981 TFLOPS

584.6 GFLOPS

FP64 (double)

82.56 GFLOPS

Graphics Processor

GA102

GPU Name

GK104

-

GPU Variant

-

Ampere

Architecture

Kepler

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

28.3 billion

Transistors

3.54 billion

628 mm²

Die Size

294 mm²

Board Design

300W

TDP

140W

700 W

Suggested PSU

300 W

3x DisplayPort 1.4a

Outputs

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

8-pin EPS

Power Connectors

1x 6-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

8.6

CUDA

3.0

6.6

Shader Model

5.1

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