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CPU Comparison: FPS, Specs & Value

FX-8120 vs Core i3-9100

The FX-8120 is much slower than the Core i3-9100 on average across 100+ games and it's also a worse value for money, as it's only $36.76 cheaper!

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CPU

$71.26View CPUAll CPUs

CPU

$108.02View CPUAll CPUs

Up to 123% faster on average across 100+ games
Is 7 years newer
Available for $108.02

FPS Comparison Across Popular Games

Predicted average FPS at 1080p, 1440p, and 4K, based on real game benchmarks.

Resolution

Quality

Paired GPU

View Compare All GPUs

Select GPU

League of Legends2009

FX-8120

111FPS

Core i3-9100

214FPS

Escape From Tarkov2017

FX-8120

208FPS

Core i3-9100

220FPS

Overwatch 22023

FX-8120

531FPS

Core i3-9100

520FPS

Grand Theft Auto V2013

FX-8120

182FPS

Core i3-9100

204FPS

Valorant2020

FX-8120

538FPS

Core i3-9100

589FPS

Fortnite2017

333FPS

326FPS

335FPS

530FPS

Dota 22013

FX-8120

169FPS

Core i3-9100

189FPS

Specs & Benchmark Comparison

Side-by-side specs, synthetic benchmarks, and key hardware differences.

Scorehelp

FX-8120

Core i3-9100

29%

Core i3-9100 ranks 26 points higher.

Coreshelp

FX-8120

Core i3-9100

FX-8120 has 4 more cores.

Threadshelp

FX-8120

Core i3-9100

FX-8120 has 4 more threads.

L3 Cachehelp

FX-8120

8 MB

Core i3-9100

6 MB

FX-8120 has 2 MB more L3 cache.

Base Frequencyhelp

FX-8120

3.1 GHz

Core i3-9100

3.6 GHz

Core i3-9100 has a 16% higher base clock.

Turbo Frequencyhelp

FX-8120

4 GHz

Core i3-9100

4.2 GHz

Core i3-9100 boosts 5% higher.

TDPhelp

FX-8120

125W

Core i3-9100

65W

Core i3-9100 draws 60W less power.

Pricehelp

FX-8120

$71.26

Core i3-9100

$108.02

FX-8120 is $36.76 cheaper.

FX-8120Core i3-9100

AM3+

Sockethelp

LGA1151

Zambezi

Codenamehelp

Coffee Lake

Desktop

Segmenthelp

Desktop

On certain motherboards (Chipset feature)

Integrated GPUhelp

UHD Graphics 630

DDR3

RAMhelp

2400 MHz (DDR4)

Overclockable

Overclock Supporthelp

Not Overclockable

Frequently Asked Questions

compare_arrowsWhich is better, FX-8120 or Core i3-9100?expand_more

The Core i3-9100. It's 867% faster than the FX-8120 on average across 100+ games, scoring 29/100 vs 3/100 in our gaming rating.

speedHow much faster is Core i3-9100 than FX-8120?expand_more

867% faster on average. The gap varies by game and resolution, check the per-game FPS comparison above.

aspect_ratioWhich is better for 1440p and 4K gaming, FX-8120 or Core i3-9100?expand_more

The Core i3-9100 is faster at both resolutions. Toggle the resolution selector above to see per-game FPS.

paidIs the Core i3-9100 worth buying in 2026?expand_more

It scores 29/100 in our gaming rating, faster than most CPUs on the market. Good buy if the price is right.

differenceWhat is the difference between FX-8120 and Core i3-9100?expand_more

Performance: FX-8120 scores 3/100, Core i3-9100 scores 29/100. They also differ in core count, clock speeds, L3 cache, and power draw. Full breakdown in the specs section above.

compressWill the FX-8120 or Core i3-9100 bottleneck my PC?expand_more

Depends on the rest of your build, especially your GPU. Swap the paired GPU in the FPS section above to see if it limits performance, or use our bottleneck calculator for a full analysis.

upgradeIs it worth upgrading to the FX-8120 or Core i3-9100?expand_more

The Core i3-9100 is the stronger pick at 29/100. Compare your current CPU against it to see the exact FPS gain across 100+ games.