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Core i9-12900K vs Pentium G645

Core i9-12900K vs Pentium G645: game performance, price, value, and specification comparison. Select comparison game parameters.

FPS Winner

Intel Core i9-12900K

3.2 GHz | 16-core

Intel Core i9-12900K Logo
Intel Core i9-12900K Gaming Desktop Processor with Integrated Graphics and 16 (8P+8E) Cores up to 5.2 GHz Unlocked LGA1700 600 Series Chipset 125W

Buy for $289 on Amazon

In Stock

Updated 28 minutes ago

vs

Intel Pentium G645

2.9 GHz | 2-core

Intel Pentium G645 Logo
Intel Pentium G645 Dual-Core Processor 2.9 Ghz 3 MB Cache LGA 1155 - BX80623G645

Buy for $40.99 on Amazon

In Stock

Updated 142 minutes ago

FPS Winner

Intel Core i9-12900K

3.2 GHz | 16-core

Intel Core i9-12900K Logo
Intel Core i9-12900K Gaming Desktop Processor with Integrated Graphics and 16 (8P+8E) Cores up to 5.2 GHz Unlocked LGA1700 600 Series Chipset 125W

Buy for $289 on Amazon

In Stock

Updated 28 minutes ago

vs

Intel Pentium G645

2.9 GHz | 2-core

Intel Pentium G645 Logo
Intel Pentium G645 Dual-Core Processor 2.9 Ghz 3 MB Cache LGA 1155 - BX80623G645

Buy for $40.99 on Amazon

In Stock

Updated 142 minutes ago

Key Differences

In short — Core i9-12900K outperforms the cheaper Pentium G645 on the selected game parameters. However, the worse performing Pentium G645 is a better bang for your buck. The better performing Core i9-12900K is 3350 days newer than the cheaper Pentium G645.

Advantages of Intel Core i9-12900K

  • Performs up to 100% better in War Thunder than Pentium G645 - 262 vs 131 FPS
  • Can execute more multi-threaded tasks simultaneously than Intel Pentium G645 - 24 vs 2 threads

Advantages of Intel Pentium G645

  • Up to 86% cheaper than Core i9-12900K - $40.99 vs $289.0
  • Up to 72% better value when playing War Thunder than Core i9-12900K - $0.31 vs $1.1 per FPS
  • Consumes up to 48% less energy than Intel Core i9-12900K - 65 vs 125 Watts
This is a free version of War Thunder.
War Thunder

War Thunder

Resolution

1920 x 1080

Game Graphics

Movie

Intel Core i9-12900K Logo
Core i9-12900K

Desktop • Nov 4th, 2021


FPS

262

100%

Value, $/FPS

$1.1/FPS

28%

Price, $

$289

14%

FPS Winner

Intel Core i9-12900K Gaming Desktop Processor with Integrated Graphics and 16 (8P+8E) Cores up to 5.2 GHz Unlocked LGA1700 600 Series Chipset 125W

Buy for $289 on Amazon

In Stock

Updated 28 minutes ago

Intel Pentium G645 Logo
Pentium G645

Desktop • Sep 2nd, 2012


FPS

131

50%

Value, $/FPS

$0.31/FPS

100%

Price, $

$40.99

100%

Value Winner

Intel Pentium G645 Dual-Core Processor 2.9 Ghz 3 MB Cache LGA 1155 - BX80623G645

Buy for $40.99 on Amazon

In Stock

Updated 142 minutes ago

TOP 5 Games

Resolution

1920 x 1080

Game Graphics

Movie

Intel Core i9-12900K Logo
Core i9-12900K

Desktop • Nov 4th, 2021

Intel Pentium G645 Logo
Pentium G645

Desktop • Sep 2nd, 2012

Geekbench 5 Benchmarks

Intel Core i9-12900K Logo
Core i9-12900K

Desktop • Nov 4th, 2021


Single-Core

2620

100%

Multi-Core

15445

100%

Intel Pentium G645 Logo
Pentium G645

Desktop • Sep 2nd, 2012


Single-Core

465

18%

Multi-Core

800

5%

Nov 4th, 2021
Release DateSep 2nd, 2012
Core i9CollectionPentium
Alder LakeCodenameSandy Bridge
Intel Socket 1700SocketIntel Socket 1155
Desktop
Segment
Desktop
16
Cores2
24
Threads2
3.2 GHz
Base Clock Speed2.9 GHz
5.2 GHzTurbo Clock SpeedNon-Turbo
125 WTDP
65 W
10 nm
Process Size32 nm
32.0x
Multiplier29.0x
UHD Graphics 770Integrated GraphicsIntel HD (Sandy Bridge)
Yes
OverclockableNo

PC Builds Using Core i9-12900K or Pentium G645

War Thunder, 1920 x 1080, Movie

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