NVIDIA GeForce GT 640 vs NVIDIA GeForce GTX 1080 Ti

VS

NVIDIA GeForce GT 640

NVIDIA GeForce GTX 1080 Ti

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 11GB VRAM GeForce GTX 1080 Ti to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

Lower TDP (65W vs 250W)

NVIDIA GeForce GTX 1080 Ti 's Advantages

Released 4 years and 9 months late

Boost Clock1582MHz

More VRAM (11GB vs 2GB)

Larger VRAM bandwidth (484.4GB/s vs 28.51GB/s)

3200 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

GeForce GTX 1080 Ti +1536%

11.34 TFLOPS

GeForce GT 640

VS

GeForce GTX 1080 Ti

Graphics Card

Jun 2012

Release Date

Mar 2017

GeForce 600

Generation

GeForce 10

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1481 MHz

-

Boost Clock

1582 MHz

891 MHz

Memory Clock

1376 MHz

Memory

2GB

Memory Size

11GB

DDR3

Memory Type

GDDR5X

128bit

Memory Bus

352bit

28.51GB/s

Bandwidth

484.4GB/s

Render Config

-

SM Count

28

384

Shading Units

3584

32

TMUs

224

16

ROPs

88

-

16 KB (per SMX)

L1 Cache

48 KB (per SM)

256 KB

L2 Cache

0 MB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

139.2 GPixel/s

28.86 GTexel/s

Texture Rate

354.4 GTexel/s

-

FP16 (half)

177.2 GFLOPS

692.7 GFLOPS

FP32 (float)

11.34 TFLOPS

28.86 GFLOPS

FP64 (double)

354.4 GFLOPS

Board Design

65W

TDP

250W

250 W

Suggested PSU

600 W

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

Outputs

1x HDMI 2.0 3x DisplayPort 1.4a

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GK107

GPU Name

GP102

GK107-300-A2

GPU Variant

GP102-350-K1-A1

Kepler

Architecture

Pascal

TSMC

Foundry

TSMC

28 nm

Process Size

16 nm

1.27 billion

Transistors

11.8 billion

118 mm²

Die Size

471 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_1)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

6.1

5.1

Shader Model

6.4

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