NVIDIA GeForce RTX 4080 16 GB vs NVIDIA GeForce GT 640 OEM

VS

NVIDIA GeForce RTX 4080 16 GB

NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 16GB VRAM GeForce RTX 4080 16 GB 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 16 GB 's Advantages

Released 10 years and 5 months late

Boost Clock2505MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (716.8GB/s vs 28.51GB/s)

9344 additional rendering cores

NVIDIA GeForce GT 640 OEM 's Advantages

Lower TDP (50W vs 320W)

Score

Benchmark

FP32 (float)

GeForce RTX 4080 16 GB +7864%

48.74 TFLOPS

GeForce GT 640 OEM

0.612 TFLOPS

GeForce RTX 4080 16 GB

VS

GeForce GT 640 OEM

Graphics Card

Sep 2022

Release Date

Apr 2012

GeForce 40

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2205 MHz

Base Clock

-

2505 MHz

Boost Clock

-

1400 MHz

Memory Clock

891 MHz

Memory

16GB

Memory Size

2GB

GDDR6X

Memory Type

DDR3

256bit

Memory Bus

128bit

716.8GB/s

Bandwidth

28.51GB/s

Render Config

-

76

SM Count

-

9728

Shading Units

384

304

TMUs

32

112

ROPs

16

304

Tensor Cores

-

76

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per SMX)

64 MB

L2 Cache

256 KB

-

Theoretical Performance

280.6 GPixel/s

Pixel Rate

6.376 GPixel/s

761.5 GTexel/s

Texture Rate

25.50 GTexel/s

48.74 TFLOPS

FP16 (half)

-

48.74 TFLOPS

FP32 (float)

612.1 GFLOPS

761.5 GFLOPS

FP64 (double)

25.50 GFLOPS

Board Design

320W

TDP

50W

700 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 Processor

AD103

GPU Name

GK107

AD103-300-A1

GPU Variant

GK107-320-A2

Ada Lovelace

Architecture

Kepler

TSMC

Foundry

TSMC

4 nm

Process Size

28 nm

45.9 billion

Transistors

1.27 billion

379 mm²

Die Size

118 mm²

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

6.6

Shader Model

5.1

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