NVIDIA GeForce GT 640 vs NVIDIA GeForce RTX 4090 D

VS

NVIDIA GeForce GT 640

NVIDIA GeForce RTX 4090 D

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 24GB VRAM GeForce RTX 4090 D 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 425W)

NVIDIA GeForce RTX 4090 D 's Advantages

Released 11 years and 6 months late

Boost Clock2520MHz

More VRAM (24GB vs 2GB)

Larger VRAM bandwidth (1008GB/s vs 28.51GB/s)

14208 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

GeForce RTX 4090 D +10511%

73.54 TFLOPS

Blender

GeForce GT 640

32

GeForce RTX 4090 D +37150%

11920

OctaneBench

GeForce GT 640

8

GeForce RTX 4090 D +15625%

1258

GeForce GT 640

VS

GeForce RTX 4090 D

Graphics Card

Jun 2012

Release Date

Dec 2023

GeForce 600

Generation

GeForce 40

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

2280 MHz

-

Boost Clock

2520 MHz

891 MHz

Memory Clock

1313 MHz

Memory

2GB

Memory Size

24GB

DDR3

Memory Type

GDDR6X

128bit

Memory Bus

384bit

28.51GB/s

Bandwidth

1008GB/s

Render Config

-

SM Count

114

384

Shading Units

14592

32

TMUs

456

16

ROPs

176

-

Tensor Cores

456

-

RT Cores

114

16 KB (per SMX)

L1 Cache

128 KB (per SM)

256 KB

L2 Cache

72 MB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

443.5 GPixel/s

28.86 GTexel/s

Texture Rate

1149 GTexel/s

-

FP16 (half)

73.54 TFLOPS

692.7 GFLOPS

FP32 (float)

73.54 TFLOPS

28.86 GFLOPS

FP64 (double)

1149 GFLOPS

Board Design

65W

TDP

425W

250 W

Suggested PSU

800 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

None

Power Connectors

1x 16-pin

Graphics Processor

GK107

GPU Name

AD102

GK107-300-A2

GPU Variant

AD102-250-A1

Kepler

Architecture

Ada Lovelace

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

1.27 billion

Transistors

76.3 billion

118 mm²

Die Size

609 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

8.9

5.1

Shader Model

6.7

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