NVIDIA GeForce GTX 1660 vs NVIDIA GeForce GT 645 OEM

VS

NVIDIA GeForce GTX 1660

NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 6GB VRAM GeForce GTX 1660 and 1024MB VRAM GeForce GT 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 1660 's Advantages

Released 6 years and 11 months late

Boost Clock1785MHz

More VRAM (6GB vs 1024GB)

Larger VRAM bandwidth (192.1GB/s vs 91.87GB/s)

1120 additional rendering cores

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 120W)

Score

Benchmark

FP32 (float)

GeForce GTX 1660 +462%

5.027 TFLOPS

GeForce GT 645 OEM

0.894 TFLOPS

GeForce GTX 1660

VS

GeForce GT 645 OEM

Graphics Card

Mar 2019

Release Date

Apr 2012

GeForce 16

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1530 MHz

Base Clock

-

1785 MHz

Boost Clock

-

2001 MHz

Memory Clock

957 MHz

Memory

6GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

192bit

192.1GB/s

Bandwidth

91.87GB/s

Render Config

-

22

SM Count

6

1408

Shading Units

288

88

TMUs

48

ROPs

24

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

1536 KB

L2 Cache

384 KB

-

Theoretical Performance

85.68 GPixel/s

Pixel Rate

9.312 GPixel/s

157.1 GTexel/s

Texture Rate

37.25 GTexel/s

10.05 TFLOPS

FP16 (half)

-

5.027 TFLOPS

FP32 (float)

894.0 GFLOPS

157.1 GFLOPS

FP64 (double)

74.50 GFLOPS

Board Design

120W

TDP

102W

300 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 8-pin

Power Connectors

-

Graphics Processor

TU116

GPU Name

GF114

TU116-300-A1

GPU Variant

-

Turing

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

12 nm

Process Size

40 nm

6.6 billion

Transistors

1.95 billion

284 mm²

Die Size

332 mm²

Graphics Features

12 (12_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

1.3

Vulkan

N/A

7.5

CUDA

2.1

6.6

Shader Model

5.1

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