NVIDIA GeForce GT 640 vs NVIDIA GeForce RTX 2080 Ti

VS

NVIDIA GeForce GT 640

NVIDIA GeForce RTX 2080 Ti

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 11GB VRAM GeForce RTX 2080 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 RTX 2080 Ti 's Advantages

Released 6 years and 3 months late

Boost Clock1545MHz

More VRAM (11GB vs 2GB)

Larger VRAM bandwidth (616.0GB/s vs 28.51GB/s)

3968 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

GeForce RTX 2080 Ti +1840%

13.45 TFLOPS

GeForce GT 640

VS

GeForce RTX 2080 Ti

Graphics Card

Jun 2012

Release Date

Sep 2018

GeForce 600

Generation

GeForce 20

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1350 MHz

-

Boost Clock

1545 MHz

891 MHz

Memory Clock

1750 MHz

Memory

2GB

Memory Size

11GB

DDR3

Memory Type

GDDR6

128bit

Memory Bus

352bit

28.51GB/s

Bandwidth

616.0GB/s

Render Config

-

SM Count

68

384

Shading Units

4352

32

TMUs

272

16

ROPs

88

-

Tensor Cores

544

-

RT Cores

68

16 KB (per SMX)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

0 MB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

136.0 GPixel/s

28.86 GTexel/s

Texture Rate

420.2 GTexel/s

-

FP16 (half)

26.90 TFLOPS

692.7 GFLOPS

FP32 (float)

13.45 TFLOPS

28.86 GFLOPS

FP64 (double)

420.2 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 1x USB Type-C

None

Power Connectors

2x 8-pin

Graphics Processor

GK107

GPU Name

TU102

GK107-300-A2

GPU Variant

TU102-300A-K1-A1

Kepler

Architecture

Turing

TSMC

Foundry

TSMC

28 nm

Process Size

12 nm

1.27 billion

Transistors

18.6 billion

118 mm²

Die Size

754 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

7.5

5.1

Shader Model

6.6

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