NVIDIA RTX A400 vs NVIDIA GeForce GTX 660 Rev. 2

VS

NVIDIA RTX A400

NVIDIA GeForce GTX 660 Rev. 2

We compared two Desktop platform GPUs: 4GB VRAM RTX A400 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 RTX A400 's Advantages

Released 9 years and 7 months late

Boost Clock has increased by 71% (1762MHz vs 1032MHz)

More VRAM (4GB vs 2GB)

Lower TDP (50W vs 140W)

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

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

192 additional rendering cores

Score

Benchmark

FP32 (float)

RTX A400 +36%

2.706 TFLOPS

GeForce GTX 660 Rev. 2

1.981 TFLOPS

RTX A400

VS

GeForce GTX 660 Rev. 2

Graphics Card

Apr 2024

Release Date

Sep 2014

Quadro Ampere(Ax000)

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1417 MHz

Base Clock

980 MHz

1762 MHz

Boost Clock

1032 MHz

1500 MHz

Memory Clock

1502 MHz

Memory

4GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

64bit

Memory Bus

192bit

96.00GB/s

Bandwidth

144.2GB/s

Render Config

-

6

SM Count

-

768

Shading Units

960

24

TMUs

80

16

ROPs

24

Tensor Cores

-

6

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per SMX)

2 MB

L2 Cache

384 KB

-

Theoretical Performance

28.19 GPixel/s

Pixel Rate

20.64 GPixel/s

42.29 GTexel/s

Texture Rate

82.56 GTexel/s

2.706 TFLOPS

FP16 (half)

-

2.706 TFLOPS

FP32 (float)

1.981 TFLOPS

42.29 GFLOPS

FP64 (double)

82.56 GFLOPS

Board Design

50W

TDP

140W

250 W

Suggested PSU

300 W

4x mini-DisplayPort 1.4a

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

GA107

GPU Name

GK104

-

Ampere

Architecture

Kepler

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

8.7 billion

Transistors

3.54 billion

200 mm²

Die Size

294 mm²

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

6.8

Shader Model

5.1

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