NVIDIA GeForce RTX 4090D vs NVIDIA GeForce GT 640 OEM Rebrand

VS

NVIDIA GeForce RTX 4090D

NVIDIA GeForce GT 640 OEM Rebrand

We compared two Desktop platform GPUs: 24GB VRAM GeForce RTX 4090D and 1536MB VRAM GeForce GT 640 OEM Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 4090D 's Advantages

Released 11 years and 8 months late

Boost Clock2520MHz

More VRAM (24GB vs 1536GB)

Larger VRAM bandwidth (1008GB/s vs 38.40GB/s)

14448 additional rendering cores

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 425W)

Score

Benchmark

FP32 (float)

GeForce RTX 4090D +17620%

73.54 TFLOPS

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce RTX 4090D

VS

GeForce GT 640 OEM Rebrand

Graphics Card

Dec 2023

Release Date

Apr 2012

GeForce 40

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

2280 MHz

Base Clock

-

2520 MHz

Boost Clock

-

1313 MHz

Memory Clock

800 MHz

Memory

24GB

Memory Size

1536MB

GDDR6X

Memory Type

DDR3

384bit

Memory Bus

192bit

1008GB/s

Bandwidth

38.40GB/s

Render Config

-

114

SM Count

3

14592

Shading Units

144

456

TMUs

24

176

ROPs

24

456

Tensor Cores

-

114

RT Cores

-

128 KB (per SM)

L1 Cache

64 KB (per SM)

72 MB

L2 Cache

384 KB

-

Theoretical Performance

443.5 GPixel/s

Pixel Rate

4.320 GPixel/s

1149 GTexel/s

Texture Rate

17.28 GTexel/s

73.54 TFLOPS

FP16 (half)

-

73.54 TFLOPS

FP32 (float)

414.7 GFLOPS

1149 GFLOPS

FP64 (double)

34.56 GFLOPS

Board Design

425W

TDP

75W

800 W

Suggested PSU

250 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 16-pin

Power Connectors

None

Graphics Processor

AD102

GPU Name

GF116

AD102-250-A1

GPU Variant

GF116-150-A1

Ada Lovelace

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

40 nm

76.3 billion

Transistors

1.17 billion

609 mm²

Die Size

238 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

1.3

Vulkan

N/A

8.9

CUDA

2.1

6.7

Shader Model

5.1

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