NVIDIA GeForce GTX 1660 vs NVIDIA GeForce GT 640 Rev. 2

VS

NVIDIA GeForce GTX 1660 NVIDIA GeForce GT 640 Rev. 2

We compared two Desktop platform GPUs: 6GB VRAM GeForce GTX 1660 and 1024MB VRAM GeForce GT 640 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 1660 's Advantages

Released 5 years and 10 months late

Boost Clock1785MHz

More VRAM (6GB vs 1GB)

Larger VRAM bandwidth (192.1GB/s vs 40.06GB/s)

1024 additional rendering cores

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Lower TDP (49W vs 120W)

Score

Benchmark

FP32 (float)

GeForce GTX 1660 +526%

5.027 TFLOPS

GeForce GT 640 Rev. 2

0.803 TFLOPS

GeForce GTX 1660

VS

GeForce GT 640 Rev. 2

Graphics Card

Mar 2019

Release Date

May 2013

GeForce 16

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x8

Clock Speeds

1530 MHz

Base Clock

-

1785 MHz

Boost Clock

-

2001 MHz

Memory Clock

1252 MHz

Memory

6GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

64bit

192.1GB/s

Bandwidth

40.06GB/s

Render Config

22

SM Count

-

Compute Units

-

1408

Shading Units

384

88

TMUs

32

48

ROPs

8

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

1536 KB

L2 Cache

512 KB

Theoretical Performance

85.68 GPixel/s

Pixel Rate

8.368 GPixel/s

157.1 GTexel/s

Texture Rate

33.47 GTexel/s

10.05 TFLOPS

FP16 (half)

-

5.027 TFLOPS

FP32 (float)

803.3 GFLOPS

157.1 GFLOPS

FP64 (double)

33.47 GFLOPS

Graphics Processor

TU116

GPU Name

GK208

TU116-300-A1

GPU Variant

GK208-400-A1

Turing

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

12 nm

Process Size

28 nm

6.6 billion

Transistors

1.02 billion

284 mm²

Die Size

87 mm²

Board Design

120W

TDP

49W

300 W

Suggested PSU

200 W

1x DVI 1x HDMI 2.0 1x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

1x 8-pin

Power Connectors

None

Graphics Features

12 (12_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

7.5

CUDA

3.5

6.6

Shader Model

5.1

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