CPU Comparison
Intel Core i5-7400 vs Intel Core i3-12100
A side-by-side comparison of specs, performance and value. The Intel Core i5-7400 is a mainstream desktop processor launched in early 2017 as part of the 7th Generation Kaby Lake lineup. Designed as the entry point for the Core i5 desktop family, it features four physical cores operating at a base frequency of 3.0 GHz, with the ability to boost up to 3.5 GHz. Manufactured on Intel's mature 14nm process, it fits into the standard 65-watt TDP envelope, making it compatible with a wide range of cooling solutions and motherboards. The chip lacks Hyper-Threading, handling four threads simultaneously, which was standard for i5 processors of this generation. It integrates Intel HD 630 graphics, providing adequate performance for everyday multimedia tasks and hardware-accelerated video decoding. Supporting dual-channel DDR4 memory at 2400 MT/s and featuring 16 PCIe 3.0 lanes, the i5-7400 was widely adopted in budget gaming rigs and office PCs. While it has been surpassed by modern processors, it remains a functional solution for basic computing needs and legacy system builds.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Solid performance for standard office tasks, but limited by 4 threads in heavy multitasking.
Handles everyday office tasks and web applications with ease, but heavy multitasking will expose the 4-core limitation.
Gaming
Can run older games well but will bottleneck modern GPUs significantly.
Delivers playable 1080p frame rates in esports and older AAA titles when paired with a mid-range GPU, though 4 cores limit performance in modern CPU-heavy games.
Virtualization
Basic VM support is possible, but performance is restricted by core count.
Can run a single lightweight virtual machine, but lacks the core count for serious virtualization workloads.
Efficiency
65W TDP is well-managed and easy to cool.
Very power-efficient for a desktop processor, drawing little power at idle and scaling linearly under load.
Specialized Performance
AI / ML
- No AI acceleration hardware
- Will struggle with any local AI inference
- No dedicated AI acceleration hardware
- CPU-based inference is slow with only 4 cores
- Not designed or recommended for machine learning tasks
Content Creation
Gaming
- Heavily bottlenecked by 4 threads in modern titles
- Acceptable for retro or e-sports titles with a low-end GPU
- HD 630 not suitable for modern gaming without a dedicated GPU
- Strong single-core performance benefits esports titles significantly
- Bottlenecks appear with GPUs above the RTX 3060 tier in CPU-bound games
- UHD 730 iGPU is insufficient for modern gaming
- 4 cores and 8 threads are the minimum recommended for modern PC gaming
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Good single-core performance for basic tasks
- Low 65W TDP is easy to cool
- Hardware video decoding for modern codecs
- Widely compatible with LGA 1151 motherboards
- Affordable on the used market
Cons
- Only 4 threads limits modern multitasking
- Locked multiplier prevents overclocking
- No PCIe Gen 4 support
- Bottlenecks modern mid-range GPUs
- Not supported on Windows 11 officially
Pros
- Outstanding single-thread performance for the price
- Includes UHD Graphics 730 for display output without a dGPU
- Bundled Laminar RM1 cooler saves money
- DDR4 and DDR5 memory flexibility
- PCIe 5.0 support for future-proofing
- Very low 60 W power consumption
Cons
- Only 4 cores limit heavy multi-threaded workloads
- No hybrid E-cores like higher-tier Alder Lake parts
- Locked multiplier prevents CPU overclocking
- UHD 730 iGPU is too weak for modern gaming
- LGA 1700 is a dead-end platform following 14th-gen
Competitors & Alternatives
Intel Core i5-7400
- AMD Ryzen 3 1200Rival
Desktop
- AMD Ryzen 5 1400Rival
Desktop
- Intel Core i3-7100Rival
Desktop
- Intel Core i5-6400Rival
Desktop
- AMD FX-8350Rival
Desktop
Successor with 6 cores, offering vastly superior modern performance.
Compare head-to-head- AMD Ryzen 5 1600Alt
Contemporary AMD alternative with 6 cores and 12 threads.
A slight step up in clock speeds if sticking to 7th Gen.
Compare head-to-head- AMD Ryzen 5 3600Alt
A much better modern alternative for a budget build.
A modern budget CPU that destroys this chip in every metric.
Compare head-to-head
Intel Core i3-12100
- AMD Ryzen 5 5500Rival
Budget Gaming
- AMD Ryzen 3 5300GRival
Budget APU
- AMD Ryzen 5 3600Rival
Previous-Gen AM4
- Compare head-to-headIntel Core i3-10100Rival
Previous-Gen Intel
- AMD Ryzen 5 4600GRival
Mainstream APU
Saves $25 if a dedicated GPU is already part of the build plan.
Compare head-to-head- Intel Core i5-12400Alt
Provides 6 Golden Cove cores for significantly better multitasking and gaming longevity.
- AMD Ryzen 5 5600Alt
A step up in price but offers a much more balanced 6-core/12-thread profile for gaming and productivity.
If priced similarly, the 13th-gen offers a slight frequency bump for a seamless upgrade.
Compare head-to-head
Our Verdict on Each
A standard quad-core CPU of its era that handles basic tasks well, but lacks Hyper-Threading and is heavily bottlenecked in modern multi-threaded workloads.
Best for: Keeping an existing LGA 1151 system alive for basic office work.
Read the full reviewThe i3-12100 delivers exceptional single-threaded performance for its $122 price point, complete with an iGPU and a stock cooler, making it one of the most well-rounded budget desktop processors Intel has ever produced.
Best for: Buy the i3-12100 if you are building a budget desktop PC and want the peace of mind of having integrated graphics as a fallback, or if you do not plan to install a dedicated GPU. At its current street price, it is an excellent choice for office PCs, student workstations, and entry-level gaming rigs paired with a mid-range graphics card like the GTX 1660 Super or RX 6600. Avoid it only if you are certain you will never need the iGPU, as the 12100F offers identical CPU performance for less money.
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i5-7400 or Intel Core i3-12100?
Based on our editorial ratings, the Intel Core i3-12100 comes out ahead with a score of 7.8/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.
Which is faster for gaming, Intel Core i5-7400 or Intel Core i3-12100?
For gaming, the Intel Core i3-12100 leads with a gaming performance score of 65/100 among Intel Core i5-7400 and Intel Core i3-12100.
Which uses less power?
The Intel Core i3-12100 has the lowest rated TDP. Power draw across these chips: Intel Core i5-7400 (65 W), Intel Core i3-12100 (60 W).
Do Intel Core i5-7400 and Intel Core i3-12100 use the same socket?
No. They use different sockets (Intel Core i5-7400: Intel Socket 1151, Intel Core i3-12100: LGA 1700), so each needs a compatible motherboard.
Which is faster in multi-core benchmarks?
The Intel Core i3-12100 posts the highest multi-core benchmark score. Multi-core results: Intel Core i5-7400 (5,200), Intel Core i3-12100 (8,500). Benchmark figures are approximate and workload-dependent.