Core i3-2125 vs Core i5-10400F
Core i3-2125
Core i5-10400F
Performance Spectrum - CPU
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. The Core i3-2125 is positioned at rank #892 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i3-2125
Performance Per Dollar Core i5-10400F
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i3-2125 | Core i5-10400F |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($15) | ⚠️ Higher cost ($102) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | ✨ Modern (Comet Lake (2020−2025) / 14 nm) |
💎 Value Proposition
| Insight | Core i3-2125 | Core i5-10400F |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+9%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($15) | ⚠️ Higher cost ($102) |
Performance Check
To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.
Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.
Technical Specifications
Side-by-side comparison of Core i3-2125 and Core i5-10400F
Core i3-2125
The Core i3-2125 is manufactured by Intel. It was released in 4 September 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 4 threads. Base frequency is 3.3 GHz, with boost up to 3.3 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 2,082 points. Launch price was $170.
Core i5-10400F
The Core i5-10400F is manufactured by Intel. It was released in 30 April 2020 (5 years ago). It is based on the Comet Lake (2020−2025) architecture. It features 6 cores and 12 threads. Base frequency is 2.9 GHz, with boost up to 4.3 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 13,029 points. Launch price was $155.
Processing Power
The Core i3-2125 packs 2 cores / 4 threads, while the Core i5-10400F offers 6 cores / 12 threads — the Core i5-10400F has 4 more cores. Boost clocks reach 3.3 GHz on the Core i3-2125 versus 4.3 GHz on the Core i5-10400F — a 26.3% clock advantage for the Core i5-10400F (base: 3.3 GHz vs 2.9 GHz). The Core i3-2125 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Core i5-10400F uses Comet Lake (2020−2025) (14 nm). In PassMark, the Core i3-2125 scores 2,082 against the Core i5-10400F's 13,029 — a 144.9% lead for the Core i5-10400F. Geekbench 6 single-core — the metric most relevant to gaming — records 499 vs 1,454, a 97.8% lead for the Core i5-10400F that directly translates to higher frame rates. L3 cache: 3 MB (total) on the Core i3-2125 vs 12 MB (total) on the Core i5-10400F.
| Feature | Core i3-2125 | Core i5-10400F |
|---|---|---|
| Cores / Threads | 2 / 4 | 6 / 12+200% |
| Boost Clock | 3.3 GHz | 4.3 GHz+30% |
| Base Clock | 3.3 GHz+14% | 2.9 GHz |
| L3 Cache | 3 MB (total) | 12 MB (total)+300% |
| L2 Cache | 256 kB (per core) | 256K (per core) |
| Process | 32 nm | 14 nm-56% |
| Architecture | Sandy Bridge (2011−2013) | Comet Lake (2020−2025) |
| PassMark | 2,082 | 13,029+526% |
| Cinebench R23 Multi | — | 8,191 |
| Geekbench 6 Single | 499 | 1,454+191% |
| Geekbench 6 Multi | — | 5,783 |
Memory & Platform
The Core i3-2125 uses the LGA1155 socket (PCIe 2.0), while the Core i5-10400F uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Core i3-2125 versus DDR4-2666 on the Core i5-10400F — the Core i5-10400F supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-10400F supports up to 128 GB of RAM compared to 32 GB — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: H61,H67,P67,Z68,B65,Q65,Q67,B75,Q75,H77,Z75,Z77 (Core i3-2125) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F).
| Feature | Core i3-2125 | Core i5-10400F |
|---|---|---|
| Socket | LGA1155 | LGA1200 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | DDR3-1333 | DDR4-2666+33% |
| Max RAM Capacity | 32 GB | 128 GB+300% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 16 |
Advanced Features
Neither processor supports overclocking. Virtualization support: VT-x, EPT (Core i3-2125) vs VT-x, VT-d (Core i5-10400F). The Core i3-2125 includes integrated graphics (HD Graphics 3000), while the Core i5-10400F requires a dedicated GPU. Primary use case: Core i3-2125 targets Budget Desktop, Core i5-10400F targets Gaming. Direct competitor: Core i3-2125 rivals A8-3850; Core i5-10400F rivals Ryzen 5 3600.
| Feature | Core i3-2125 | Core i5-10400F |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | HD Graphics 3000 | — |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | VT-x, EPT | VT-x, VT-d |
| Target Use | Budget Desktop | Gaming |
Value Analysis
The Core i3-2125 launched at $134 MSRP, while the Core i5-10400F debuted at $160. At current prices ($15 vs $102), the Core i3-2125 is $87 cheaper. In terms of value (PassMark points per dollar), the Core i3-2125 delivers 138.8 pts/$ vs 127.7 pts/$ for the Core i5-10400F — making the Core i3-2125 the 8.3% better value option.
| Feature | Core i3-2125 | Core i5-10400F |
|---|---|---|
| MSRP | $134-16% | $160 |
| Avg Price (30d) | $15-85% | $102 |
| Performance per Dollar | 138.8+9% | 127.7 |
| Release Date | 2011 | 2020 |
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