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CPU Comparison: FPS, Specs & Value

Core i5-11600K vs Core i7-3820

The Core i5-11600K is much faster than the Core i7-3820 on average across 100+ games and it's also a much better value for money, as it's $150.88 cheaper!

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CPU

$199.00View CPUAll CPUs

Up to 165% faster on average across 100+ games
Is 9 years and 3 months newer
Up to 16% cheaper – $199.00 vs $349.88
Up to 208% better value for money

CPU

$349.88View CPUAll CPUs

Up to 16% more expensive – $349.88 vs $199.00

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

Overwatch 22023

Core i5-11600K

543FPS

Core i7-3820

522FPS

League of Legends2009

Core i5-11600K

311FPS

Core i7-3820

130FPS

Grand Theft Auto V2013

Core i5-11600K

216FPS

Core i7-3820

187FPS

Fortnite2017

Core i5-11600K

332FPS

Core i7-3820

327FPS

Valorant2020

681FPS

540FPS

647FPS

383FPS

Minecraft2011

Core i5-11600K

713FPS

Core i7-3820

574FPS

Escape From Tarkov2017

Core i5-11600K

240FPS

Core i7-3820

209FPS

Specs & Benchmark Comparison

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

Scorehelp

Core i5-11600K

50%

Core i7-3820

Core i5-11600K ranks 42 points higher.

Coreshelp

Core i5-11600K

Core i7-3820

Core i5-11600K has 2 more cores.

Threadshelp

Core i5-11600K

Core i7-3820

Core i5-11600K has 4 more threads.

L3 Cachehelp

Core i5-11600K

12 MB

Core i7-3820

10 MB

Core i5-11600K has 2 MB more L3 cache.

Base Frequencyhelp

Core i5-11600K

3.9 GHz

Core i7-3820

3.6 GHz

Core i5-11600K has a 8% higher base clock.

Turbo Frequencyhelp

Core i5-11600K

4.9 GHz

Core i7-3820

3.8 GHz

Core i5-11600K boosts 29% higher.

TDPhelp

Core i5-11600K

125W

Core i7-3820

130W

Core i5-11600K draws 5W less power.

Pricehelp

Core i5-11600K

$199.00

Core i7-3820

$349.88

Core i5-11600K is $150.88 cheaper.

Core i5-11600KCore i7-3820

LGA1200

Sockethelp

LGA2011

Rocket Lake

Codenamehelp

Sandy Bridge-E

Desktop

Segmenthelp

Desktop

UHD Graphics 750

Integrated GPUhelp

No Integrated Graphics

3200 MHz (DDR4)

RAMhelp

1600 MHz (DDR3)

Overclockable

Overclock Supporthelp

Overclockable

Frequently Asked Questions

compare_arrowsWhich is better, Core i5-11600K or Core i7-3820?expand_more

The Core i5-11600K. It's 525% faster than the Core i7-3820 on average across 100+ games, scoring 50/100 vs 8/100 in our gaming rating.

speedHow much faster is Core i5-11600K than Core i7-3820?expand_more

525% 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 i5-11600K or Core i7-3820?expand_more

The Core i5-11600K is faster at both resolutions. Toggle the resolution selector above to see per-game FPS.

paidIs the Core i5-11600K worth buying in 2026?expand_more

It scores 50/100 in our gaming rating, faster than most CPUs on the market. Good buy if the price is right.

differenceWhat is the difference between Core i5-11600K and Core i7-3820?expand_more

Performance: Core i5-11600K scores 50/100, Core i7-3820 scores 8/100. They also differ in core count, clock speeds, L3 cache, and power draw. Full breakdown in the specs section above.

compressWill the Core i5-11600K or Core i7-3820 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 i5-11600K or Core i7-3820?expand_more

The Core i5-11600K is the stronger pick at 50/100. Compare your current CPU against it to see the exact FPS gain across 100+ games.