NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GTX 1660 Ti

VS

NVIDIA GeForce GT 640 OEM Rebrand

NVIDIA GeForce GTX 1660 Ti

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 6GB VRAM GeForce GTX 1660 Ti to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 120W)

NVIDIA GeForce GTX 1660 Ti 's Advantages

Released 6 years and 10 months late

Boost Clock1770MHz

More VRAM (6GB vs 1536GB)

Larger VRAM bandwidth (288.0GB/s vs 38.40GB/s)

1392 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 1660 Ti +1210%

5.437 TFLOPS

GeForce GT 640 OEM Rebrand

VS

GeForce GTX 1660 Ti

Graphics Card

Apr 2012

Release Date

Feb 2019

GeForce 600

Generation

GeForce 16

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1500 MHz

-

Boost Clock

1770 MHz

800 MHz

Memory Clock

1500 MHz

Memory

1536MB

Memory Size

6GB

DDR3

Memory Type

GDDR6

192bit

Memory Bus

192bit

38.40GB/s

Bandwidth

288.0GB/s

Render Config

-

3

SM Count

24

144

Shading Units

1536

24

TMUs

96

24

ROPs

48

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

1536 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

84.96 GPixel/s

17.28 GTexel/s

Texture Rate

169.9 GTexel/s

-

FP16 (half)

10.87 TFLOPS

414.7 GFLOPS

FP32 (float)

5.437 TFLOPS

34.56 GFLOPS

FP64 (double)

169.9 GFLOPS

Board Design

75W

TDP

120W

250 W

Suggested PSU

300 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

None

Power Connectors

1x 8-pin

Graphics Processor

GF116

GPU Name

TU116

GF116-150-A1

GPU Variant

TU116-400-A1

Fermi 2.0

Architecture

Turing

TSMC

Foundry

TSMC

40 nm

Process Size

12 nm

1.17 billion

Transistors

6.6 billion

238 mm²

Die Size

284 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_1)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.3

2.1

CUDA

7.5

5.1

Shader Model

6.6

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