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Processors comparison

Core i3-12100 vs Core i5-12400

Specs, platform, power, size and UK prices side by side. Every value comes from the product listing; anything we don't hold is marked unknown.

Intel
Core i3-12100
No listed new price
View on Amazon
Intel Core i5 12400 6 Core Alder Lake CPU/Processor
Intel
Core i5-12400
£160.00at eBay UK
Checked 16 Mar 2026. Confirm at the retailer.
View at eBay

Key differences

  • Both use the LGA 1700 socket. Check a motherboard's CPU support list before swapping one for the other; older boards can need a BIOS update.
  • The Core i3-12100 has 4 cores / 8 threads; the Core i5-12400 has 6 cores / 12 threads.
  • Memory support differs: Core i3-12100 DDR5, Core i5-12400 DDR4, DDR5.

Performance

We don't have measured benchmark results for these parts yet, and we don't publish estimated scores. Specs like core count, clock speed and video memory are a guide, not a measure of speed in games or apps.

Specifications

SpecificationCore i3-12100Core i5-12400
Platform
SocketDecides which motherboards the processor fits.LGA 1700LGA 1700
Memory supportDDR5DDR4, DDR5
ArchitectureAlder LakeAlder Lake
SeriesIntel Core i3Intel Core i5
Cores and clocks
Cores46Higher
Threads812Higher
Max boost clockUnknown4.4 GHz
Power and cooling
Rated TDPThe maker's thermal design rating, not measured power draw.60 W65 W
Cooler in the boxYesYes
Features
Integrated graphicsWithout it you need a graphics card to get a picture.UnknownYes

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