Header Background
Header Background
Background
Background
Background
Bachground
vs
FPS Winner

The Core i3-8121U is a much slower gaming CPU than the Core i9-9900. We cannot compare value as at least one CPU is out of stock.

Advantages of the Core i3-8121U

  • Consumes up to 77% less energy15 vs 65 Watts

Advantages of the Core i9-9900

  • A much faster CPU for gaming
  • Can execute more multi-threaded tasks simultaneously – 16 vs 4 threads
  • Can run games without a dedicated GPU as it has integrated graphics

Core i3-8121U vs Core i9-9900 for Gaming

The CPU's performance in selected game and settings

Intel Core i3-8121U Logo

Core i3-8121U

May 5th, 2018


Average FPS

181

95%

Min 1% FPS

120

95%

Price, €

Out of Stock

Value, €/FPS

Not Available


All items are out of stock.

Intel Core i9-9900 Logo

Core i9-9900

Apr 23rd, 2019


Average FPS

190

100%

Min 1% FPS

126

100%

Price, €

Out of Stock

Value, €/FPS

Not Available


All items are out of stock.

Core i3-8121U vs Core i9-9900 in My Games

The FPS you'll get in saved games, click on a game to change it

The FPS you'll get in saved games, click on a game to change it

Select Game

Add a Game

Select Settings

Synthetic Benchmarks

The Core i3-8121U vs Core i9-9900 in synthetic CPU benchmarks

Intel Core i3-8121U Logo

Core i3-8121U

May 5th, 2018


Geekbench 6 Single-Core

1176

73%

Geekbench 6 Multi-Core

2364

33%

Intel Core i9-9900 Logo

Core i9-9900

Apr 23rd, 2019


Geekbench 6 Single-Core

1610

100%

Geekbench 6 Multi-Core

7225

100%

Performance Specifications

The Core i3-8121U vs Core i9-9900 in core CPU performance specifications

Intel Core i3-8121U Logo

Core i3-8121U

May 5th, 2018


Cores

2-core

25%

L3 Cache

4 MB

25%


Base Frequency

2.2 GHz

71%

Turbo Frequency

3.2 GHz

64%

Max. DDR4 RAM Speed

2400 MHz

90%

Intel Core i9-9900 Logo

Core i9-9900

Apr 23rd, 2019


Cores

8-core

100%

L3 Cache

16 MB

100%


Base Frequency

3.1 GHz

100%

Turbo Frequency

5 GHz

100%

Max. DDR4 RAM Speed

2666 MHz

100%

Specifications

Comparison of all specifications

Intel Core i3-8121U Logo

Core i3-8121U

Specifications

Comparison of all specifications

Intel Core i9-9900 Logo

Core i9-9900

May 5th, 2018
Apr 23rd, 2019
Not Available$423.00
Laptop
Desktop
Intel BGA 1440Intel Socket 1151
Cannon LakeCoffee Lake
15 W
65 W
2
8
4
16
2.2 GHz
3.1 GHz
3.2 GHz
5.0 GHz
4 MB
16 MB
DDR4 @ 2400 MHzDDR4 @ 2666 MHz
No
UHD Graphics 630
NoNo

Core i3-8121U and Core i9-9900 vs Other CPUs

The most compared CPUs against the Core i3-8121U and Core i9-9900

The most compared CPUs against the Core i3-8121U and Core i9-9900

CPUs Compared for Gaming

Add a CPU

Click to Select a CPU

vs

Add a CPU

Click to Select a CPU

Found  CPUs

Popularity
Processor
Performance
Price
Value

Copyright © 2025 HowManyFPS. All rights reserved.

Have a suggestion or a business inquiry? [email protected]

Cookies Policy

As an Amazon Associate HowManyFPS earns from qualifying purchases.