NVIDIA GeForce GTX 645 OEM vs NVIDIA RTX A4000H

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA RTX A4000H

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 16GB VRAM RTX A4000H 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 140W)

NVIDIA RTX A4000H 's Advantages

Released 8 years late

Boost Clock1560MHz

More VRAM (16GB vs 1024GB)

Larger VRAM bandwidth (448.0GB/s vs 64.00GB/s)

5568 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

RTX A4000H +1920%

19.17 TFLOPS

GeForce GTX 645 OEM

VS

RTX A4000H

Graphics Card

Apr 2013

Release Date

Apr 2021

GeForce 600

Generation

Quadro Ampere

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

735 MHz

-

Boost Clock

1560 MHz

1000 MHz

Memory Clock

1750 MHz

Memory

1024MB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

448.0GB/s

Render Config

-

SM Count

48

576

Shading Units

6144

48

TMUs

192

16

ROPs

96

-

Tensor Cores

192

-

RT Cores

48

16 KB (per SMX)

L1 Cache

128 KB (per SM)

256 KB

L2 Cache

4 MB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

149.8 GPixel/s

39.55 GTexel/s

Texture Rate

299.5 GTexel/s

-

FP16 (half)

19.17 TFLOPS

949.2 GFLOPS

FP32 (float)

19.17 TFLOPS

39.55 GFLOPS

FP64 (double)

299.5 GFLOPS

Board Design

65W

TDP

140W

250 W

Suggested PSU

300 W

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

Outputs

4x DisplayPort 1.4a

None

Power Connectors

1x 6-pin

Graphics Processor

GK106

GPU Name

GA104

GK106-200-A1

GPU Variant

GA104-???-A1

Kepler

Architecture

Ampere

TSMC

Foundry

Samsung

28 nm

Process Size

8 nm

2.54 billion

Transistors

17.4 billion

221 mm²

Die Size

392 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

8.6

5.1

Shader Model

6.7

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