NVIDIA GeForce GTX 645 OEM vs NVIDIA GeForce RTX 4080

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA GeForce RTX 4080

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 16GB VRAM GeForce RTX 4080 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 320W)

NVIDIA GeForce RTX 4080 's Advantages

Released 9 years and 5 months late

Boost Clock2505MHz

More VRAM (16GB vs 1024GB)

Larger VRAM bandwidth (716.8GB/s vs 64.00GB/s)

9152 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

GeForce RTX 4080 +5035%

48.74 TFLOPS

GeForce GTX 645 OEM

VS

GeForce RTX 4080

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

2205 MHz

-

Boost Clock

2505 MHz

1000 MHz

Memory Clock

1400 MHz

Memory

1024MB

Memory Size

16GB

GDDR5

Memory Type

GDDR6X

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

716.8GB/s

Render Config

-

SM Count

76

576

Shading Units

9728

48

TMUs

304

16

ROPs

112

-

Tensor Cores

304

-

RT Cores

76

16 KB (per SMX)

L1 Cache

128 KB (per SM)

256 KB

L2 Cache

64 MB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

280.6 GPixel/s

39.55 GTexel/s

Texture Rate

761.5 GTexel/s

-

FP16 (half)

48.74 TFLOPS

949.2 GFLOPS

FP32 (float)

48.74 TFLOPS

39.55 GFLOPS

FP64 (double)

761.5 GFLOPS

Board Design

65W

TDP

320W

250 W

Suggested PSU

700 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

GK106

GPU Name

AD103

GK106-200-A1

GPU Variant

AD103-300-A1

Kepler

Architecture

Ada Lovelace

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

2.54 billion

Transistors

45.9 billion

221 mm²

Die Size

379 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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