NVIDIA GeForce GT 645 OEM vs NVIDIA CMP 40HX

VS

NVIDIA GeForce GT 645 OEM

NVIDIA CMP 40HX

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 8GB VRAM CMP 40HX 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 185W)

NVIDIA CMP 40HX 's Advantages

Released 8 years and 10 months late

Boost Clock1650MHz

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (448.0GB/s vs 91.87GB/s)

2016 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

CMP 40HX +750%

7.603 TFLOPS

GeForce GT 645 OEM

VS

CMP 40HX

Graphics Card

Apr 2012

Release Date

Feb 2021

GeForce 600

Generation

Mining GPUs

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1470 MHz

-

Boost Clock

1650 MHz

957 MHz

Memory Clock

1750 MHz

Memory

1024MB

Memory Size

8GB

GDDR5

Memory Type

GDDR6

192bit

Memory Bus

256bit

91.87GB/s

Bandwidth

448.0GB/s

Render Config

-

6

SM Count

36

288

Shading Units

2304

48

TMUs

144

24

ROPs

64

-

Tensor Cores

288

-

RT Cores

36

64 KB (per SM)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

4 MB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

105.6 GPixel/s

37.25 GTexel/s

Texture Rate

237.6 GTexel/s

-

FP16 (half)

15.21 TFLOPS

894.0 GFLOPS

FP32 (float)

7.603 TFLOPS

74.50 GFLOPS

FP64 (double)

237.6 GFLOPS

Board Design

102W

TDP

185W

300 W

Suggested PSU

450 W

2x DVI 1x mini-HDMI 1.3a

Outputs

No outputs

-

Power Connectors

1x 8-pin

Graphics Processor

GF114

GPU Name

TU106

-

GPU Variant

TU106-100-A1

Fermi 2.0

Architecture

Turing

TSMC

Foundry

TSMC

40 nm

Process Size

12 nm

1.95 billion

Transistors

10.8 billion

332 mm²

Die Size

445 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

7.5

5.1

Shader Model

6.6

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