NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce RTX 3080

VS

NVIDIA GeForce GT 645 OEM

NVIDIA GeForce RTX 3080

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 10GB VRAM GeForce RTX 3080 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 320W)

NVIDIA GeForce RTX 3080 's Advantages

Released 8 years and 5 months late

Boost Clock1710MHz

More VRAM (10GB vs 1024GB)

Larger VRAM bandwidth (760.3GB/s vs 91.87GB/s)

8416 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

GeForce RTX 3080 +3229%

29.77 TFLOPS

GeForce GT 645 OEM

VS

GeForce RTX 3080

Graphics Card

Apr 2012

Release Date

Sep 2020

GeForce 600

Generation

GeForce 30

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1440 MHz

-

Boost Clock

1710 MHz

957 MHz

Memory Clock

1188 MHz

Memory

1024MB

Memory Size

10GB

GDDR5

Memory Type

GDDR6X

192bit

Memory Bus

320bit

91.87GB/s

Bandwidth

760.3GB/s

Render Config

-

6

SM Count

68

288

Shading Units

8704

48

TMUs

272

24

ROPs

96

-

Tensor Cores

272

-

RT Cores

68

64 KB (per SM)

L1 Cache

128 KB (per SM)

384 KB

L2 Cache

5 MB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

164.2 GPixel/s

37.25 GTexel/s

Texture Rate

465.1 GTexel/s

-

FP16 (half)

29.77 TFLOPS

894.0 GFLOPS

FP32 (float)

29.77 TFLOPS

74.50 GFLOPS

FP64 (double)

465.1 GFLOPS

Board Design

102W

TDP

320W

300 W

Suggested PSU

700 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

-

Power Connectors

1x 12-pin

Graphics Processor

GF114

GPU Name

GA102

-

GPU Variant

GA102-200-KD-A1

Fermi 2.0

Architecture

Ampere

TSMC

Foundry

Samsung

40 nm

Process Size

8 nm

1.95 billion

Transistors

28.3 billion

332 mm²

Die Size

628 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.3

2.1

CUDA

8.6

5.1

Shader Model

6.6

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