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CPU Comparison: FPS, Specs & Value

Core i5-9400 vs Core i7-870

The Core i5-9400 is much faster than the Core i7-870 on average across 100+ games and it's also a much better value for money, as it's only $12.95 more expensive!

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CPU

$198.95View CPUAll CPUs

Up to 104% faster on average across 100+ games
Is 9 years and 3 months newer

CPU

$186.00View CPUAll CPUs

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

Escape From Tarkov2017

Core i5-9400

220FPS

Core i7-870

208FPS

Grand Theft Auto V2013

Core i5-9400

204FPS

Core i7-870

184FPS

League of Legends2009

Core i5-9400

217FPS

Core i7-870

117FPS

Elden Ring2022

Core i5-9400

152FPS

Core i7-870

146FPS

Valorant2020

591FPS

538FPS

533FPS

352FPS

Minecraft2011

Core i5-9400

619FPS

Core i7-870

576FPS

Fortnite2017

Core i5-9400

327FPS

Core i7-870

330FPS

Specs & Benchmark Comparison

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

Scorehelp

Core i5-9400

29%

Core i7-870

Core i5-9400 ranks 25 points higher.

Coreshelp

Core i5-9400

Core i7-870

Core i5-9400 has 2 more cores.

Threadshelp

Core i5-9400

Core i7-870

Core i7-870 has 2 more threads.

L3 Cachehelp

Core i5-9400

9 MB

Core i7-870

8 MB

Core i5-9400 has 1 MB more L3 cache.

Base Frequencyhelp

Core i5-9400

2.9 GHz

Core i7-870

2.933 GHz

Core i7-870 has a 1% higher base clock.

Turbo Frequencyhelp

Core i5-9400

4.1 GHz

Core i7-870

3.6 GHz

Core i5-9400 boosts 14% higher.

TDPhelp

Core i5-9400

65W

Core i7-870

95W

Core i5-9400 draws 30W less power.

Pricehelp

Core i5-9400

$198.95

Core i7-870

$186.00

Core i7-870 is $12.95 cheaper.

Core i5-9400Core i7-870

LGA1151

Sockethelp

LGA1156

Coffee Lake

Codenamehelp

Lynnfield

Desktop

Segmenthelp

Desktop

UHD 630

Integrated GPUhelp

No Integrated Graphics

2666 MHz (DDR4)

RAMhelp

DDR3

Not Overclockable

Overclock Supporthelp

Not Overclockable

Frequently Asked Questions

compare_arrowsWhich is better, Core i5-9400 or Core i7-870?expand_more

The Core i5-9400. It's 625% faster than the Core i7-870 on average across 100+ games, scoring 29/100 vs 4/100 in our gaming rating.

speedHow much faster is Core i5-9400 than Core i7-870?expand_more

625% 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, Core i5-9400 or Core i7-870?expand_more

The Core i5-9400 is faster at both resolutions. Toggle the resolution selector above to see per-game FPS.

paidIs the Core i5-9400 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 Core i5-9400 and Core i7-870?expand_more

Performance: Core i5-9400 scores 29/100, Core i7-870 scores 4/100. They also differ in core count, clock speeds, L3 cache, and power draw. Full breakdown in the specs section above.

compressWill the Core i5-9400 or Core i7-870 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 Core i5-9400 or Core i7-870?expand_more

The Core i5-9400 is the stronger pick at 29/100. Compare your current CPU against it to see the exact FPS gain across 100+ games.