NVIDIA GeForce RTX 4080 Ti vs NVIDIA GeForce GT 640 OEM

VS

NVIDIA GeForce RTX 4080 Ti NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 16GB VRAM GeForce RTX 4080 Ti and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 4080 Ti 's Advantages

Boost Clock2610MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (678.4GB/s vs 28.51GB/s)

13696 additional rendering cores

NVIDIA GeForce GT 640 OEM 's Advantages

Lower TDP (50W vs 400W)

Score

Benchmark

FP32 (float)

GeForce RTX 4080 Ti +11909%

73.5 TFLOPS

GeForce GT 640 OEM

0.612 TFLOPS

GeForce RTX 4080 Ti

VS

GeForce GT 640 OEM

Graphics Card

Unknown

Release Date

Apr 2012

GeForce 40

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2340 MHz

Base Clock

-

2610 MHz

Boost Clock

-

1325 MHz

Memory Clock

891 MHz

Memory

16GB

Memory Size

2GB

GDDR6X

Memory Type

DDR3

256bit

Memory Bus

128bit

678.4GB/s

Bandwidth

28.51GB/s

Render Config

110

SM Count

-

Compute Units

-

14080

Shading Units

384

440

TMUs

32

144

ROPs

16

440

Tensor Cores

-

110

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per SMX)

80 MB

L2 Cache

256 KB

Theoretical Performance

375.8 GPixel/s

Pixel Rate

6.376 GPixel/s

1148 GTexel/s

Texture Rate

25.50 GTexel/s

73.50 TFLOPS

FP16 (half)

-

73.50 TFLOPS

FP32 (float)

612.1 GFLOPS

1148 GFLOPS

FP64 (double)

25.50 GFLOPS

Graphics Processor

AD102

GPU Name

GK107

AD102-225-A1

GPU Variant

GK107-320-A2

Ada Lovelace

Architecture

Kepler

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

76.3 billion

Transistors

1.27 billion

609 mm²

Die Size

118 mm²

Board Design

400W

TDP

50W

800 W

Suggested PSU

250 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

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

1x 16-pin

Power Connectors

None

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

8.9

CUDA

3.0

6.7

Shader Model

5.1

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