NVIDIA GeForce GTX 645 OEM vs NVIDIA GeForce RTX 4090

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA GeForce RTX 4090

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 24GB VRAM GeForce RTX 4090 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 645 OEM 's Advantages

Lower TDP (65W vs 450W)

NVIDIA GeForce RTX 4090 's Advantages

Released 9 years and 5 months late

Boost Clock2520MHz

More VRAM (24GB vs 1024GB)

Larger VRAM bandwidth (1.01TB/s vs 64.00GB/s)

15808 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

GeForce RTX 4090 +8601%

82.58 TFLOPS

GeForce GTX 645 OEM

VS

GeForce RTX 4090

Graphics Card

Apr 2013

Release Date

Sep 2022

GeForce 600

Generation

GeForce 40

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

2235 MHz

-

Boost Clock

2520 MHz

1000 MHz

Memory Clock

1313 MHz

Memory

1024MB

Memory Size

24GB

GDDR5

Memory Type

GDDR6X

128bit

Memory Bus

384bit

64.00GB/s

Bandwidth

1.01TB/s

Render Config

-

SM Count

128

576

Shading Units

16384

48

TMUs

512

16

ROPs

176

-

Tensor Cores

512

-

RT Cores

128

16 KB (per SMX)

L1 Cache

128 KB (per SM)

256 KB

L2 Cache

72 MB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

443.5 GPixel/s

39.55 GTexel/s

Texture Rate

1290 GTexel/s

-

FP16 (half)

82.58 TFLOPS

949.2 GFLOPS

FP32 (float)

82.58 TFLOPS

39.55 GFLOPS

FP64 (double)

1290 GFLOPS

Board Design

65W

TDP

450W

250 W

Suggested PSU

850 W

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

Outputs

1x HDMI 2.13x DisplayPort 1.4a

None

Power Connectors

1x 16-pin

Graphics Processor

GK106

GPU Name

AD102

GK106-200-A1

GPU Variant

AD102-300-A1

Kepler

Architecture

Ada Lovelace

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

2.54 billion

Transistors

76.3 billion

221 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

6.8

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