NVIDIA GeForce GTX 645 OEM vs NVIDIA GeForce RTX 5090

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA GeForce RTX 5090

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 32GB VRAM GeForce RTX 5090 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 500W)

NVIDIA GeForce RTX 5090 's Advantages

Released 11 years and 9 months late

Boost Clock2520MHz

More VRAM (32GB vs 1024GB)

Larger VRAM bandwidth (1.52TB/s vs 64.00GB/s)

21184 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

GeForce RTX 5090 +11459%

109.7 TFLOPS

GeForce GTX 645 OEM

VS

GeForce RTX 5090

Graphics Card

Apr 2013

Release Date

Jan 2025

GeForce 600

Generation

GeForce 50

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 5.0 x16

Clock Speeds

-

Base Clock

2235 MHz

-

Boost Clock

2520 MHz

1000 MHz

Memory Clock

1875 MHz

Memory

1024MB

Memory Size

32GB

GDDR5

Memory Type

GDDR7

128bit

Memory Bus

512bit

64.00GB/s

Bandwidth

1.52TB/s

Render Config

-

SM Count

170

576

Shading Units

21760

48

TMUs

680

16

ROPs

192

-

Tensor Cores

680

-

RT Cores

170

16 KB (per SMX)

L1 Cache

128 KB (per SM)

256 KB

L2 Cache

88 MB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

483.8 GPixel/s

39.55 GTexel/s

Texture Rate

1714 GTexel/s

-

FP16 (half)

109.7 TFLOPS

949.2 GFLOPS

FP32 (float)

109.7 TFLOPS

39.55 GFLOPS

FP64 (double)

1.714 TFLOPS

Board Design

65W

TDP

500W

250 W

Suggested PSU

900 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 2.1a

None

Power Connectors

1x 16-pin

Graphics Processor

GK106

GPU Name

GB202

GK106-200-A1

GPU Variant

GB202-400-A1

Kepler

Architecture

Blackwell 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

4 nm

2.54 billion

Transistors

Unknown

221 mm²

Die Size

Unknown

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

10.1

5.1

Shader Model

6.8

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