Core i5-12400F
Phenom II X2 N640
Core i5-12400F vs Phenom II X2 N640 Performance Spectrum
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.
Core i5-12400F vs Phenom II X2 N640 FPS Benchmarks
Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.
Search any supported game below to compare 1080p FPS for both components.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Among Us
Apex Legends
ARC Raiders
Baldur's Gate 3
Call of Duty: Black Ops 6
Core i5-12400F vs Phenom II X2 N640: Pros, Cons & Final Verdict
See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.
Core i5-12400F
2022Why buy it
- ✅Better for gaming: +453.0% higher average FPS across 50 shared CPU benchmark tests.
- ✅Delivers 645.9% more PassMark for each dollar spent, at 112.3 vs 15.1 PassMark/$ ($174 MSRP vs $100 MSRP).
- ✅Newer platform on LGA1700 with DDR5 support instead of S1 and older memory support.
- ✅25% more PCIe lanes (20 vs 16) for storage and expansion-heavy builds.
- ✅Includes a boxed cooler (Yes), unlike Phenom II X2 N640.
Trade-offs
- ❌74% HIGHER MSRP$174 MSRPvs$100 MSRP
- ❌3150% higher power demand at 65W vs 2W.
Phenom II X2 N640
2010Why buy it
- ✅Costs $74 less on MSRP ($100 MSRP vs $174 MSRP).
- ✅Draws 2W instead of 65W, a 63W reduction.
Trade-offs
- ❌Worse for gaming: lower average FPS than Core i5-12400F across 50 shared CPU benchmark tests.
- ❌Lower Geekbench multi-core (422 vs 657).
- ❌Lower PassMark per dollar, at 15.1 vs 112.3 PassMark/$ ($100 MSRP vs $174 MSRP).
- ❌Older platform position on S1, while Core i5-12400F moves to LGA1700 and DDR5.
- ❌No boxed cooler included, unlike Core i5-12400F.
Quick Answers
So, is Core i5-12400F better than Phenom II X2 N640?
Which one is better for gaming?
Which one is better for streaming, content creation, and heavy multitasking?
Which one is the smarter buy today, not just the cheaper CPU?
Which one is more future-proof for 2026 and beyond?
Core i5-12400F vs Phenom II X2 N640 Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
Core i5-12400F
The Core i5-12400F is manufactured by Intel. It was released in 4 January 2022 (3 years ago). It is based on the Alder Lake-S (2022) architecture. It features 6 cores and 12 threads. Base frequency is 2.5 GHz, with boost up to 4.4 GHz. L3 cache: 18 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 65 Watt. Memory support: DDR5-4800, DDR4-3200. Passmark benchmark score: 19,532 points. Launch price was $180.
Phenom II X2 N640
The Phenom II X2 N640 is manufactured by AMD. It was released in 2009-01-01. It is based on the Champlain (2010−2011) architecture. It features 2 cores and 2 threads. Max frequency: 2.9 GHz. L2 cache: 2 MB. Built on 45 nm process technology. Socket: S1. Thermal design power (TDP): 2 MB. Memory support: DDR3. Passmark benchmark score: 1,505 points. Launch price was $149.
Processing Power
The Core i5-12400F packs 6 cores / 12 threads, while the Phenom II X2 N640 offers 2 cores / 2 threads — the Core i5-12400F has 4 more cores. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 2.9 GHz on the Phenom II X2 N640 — a 41.1% clock advantage for the Core i5-12400F. The Core i5-12400F uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Phenom II X2 N640 uses Champlain (2010−2011) (45 nm). In PassMark, the Core i5-12400F scores 19,532 against the Phenom II X2 N640's 1,505 — a 171.4% lead for the Core i5-12400F. Geekbench 6 single-core — the metric most relevant to gaming — records 1,700 vs 300, a 140% lead for the Core i5-12400F that directly translates to higher frame rates. Multi-core Geekbench: 657 vs 422 (43.6% advantage for the Core i5-12400F).
| Feature | Core i5-12400F | Phenom II X2 N640 |
|---|---|---|
| Cores / Threads | 6 / 12+200% | 2 / 2 |
| Boost Clock | 4.4 GHz+52% | 2.9 GHz |
| Base Clock | 2.5 GHz | — |
| L3 Cache | 18 MB (total) | — |
| L2 Cache | 1.25 MB (per core) | 2 MB+60% |
| Process | Intel 7 nm-84% | 45 nm |
| Architecture | Alder Lake-S (2022) | Champlain (2010−2011) |
| PassMark | 19,532+1198% | 1,505 |
| Cinebench R23 Multi | 12,380 | — |
| Geekbench 6 Single | 1,700+467% | 300 |
| Geekbench 6 Multi | 657+56% | 422 |
Memory & Platform
The Core i5-12400F uses the LGA1700 socket (PCIe 3.0), while the Phenom II X2 N640 uses S1 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800, DDR4-3200 on the Core i5-12400F versus DDR3-1333 on the Phenom II X2 N640 — the Core i5-12400F supports 260.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-12400F supports up to 128 GB of RAM compared to 8 GB — 1500% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i5-12400F) vs 16 (Phenom II X2 N640) — the Core i5-12400F offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F) and RS880M (Phenom II X2 N640).
| Feature | Core i5-12400F | Phenom II X2 N640 |
|---|---|---|
| Socket | LGA1700 | S1 |
| PCIe Generation | PCIe 3.0+50% | PCIe 2.0 |
| Max RAM Speed | DDR5-4800, DDR4-3200+260% | DDR3-1333 |
| Max RAM Capacity | 128 GB+1500% | 8 GB |
| RAM Channels | 2 | 2 |
| ECC Support | No | No |
| PCIe Lanes | 20+25% | 16 |
Advanced Features
Virtualization support: VT-x, VT-d, EPT (Core i5-12400F) vs AMD-V (Phenom II X2 N640). Primary use case: Core i5-12400F targets Gaming Performance/Value, Phenom II X2 N640 targets Legacy Laptop. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.
| Feature | Core i5-12400F | Phenom II X2 N640 |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | — | None |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | VT-x, VT-d, EPT | AMD-V |
| Target Use | Gaming Performance/Value | Legacy Laptop |
Value Analysis
At launch, the Core i5-12400F was priced at $174, while the Phenom II X2 N640 came in at $100. On launch pricing ($174 vs $100), Phenom II X2 N640 was $74 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-12400F delivers 112.3 pts/$ vs 15.1 pts/$ for the Phenom II X2 N640 — making the Core i5-12400F the 152.7% better value option.
| Feature | Core i5-12400F | Phenom II X2 N640 |
|---|---|---|
| MSRP | $174 | $100-43% |
| Performance per Dollar | 112.3+644% | 15.1 |
| Release Date | 2022 | 2010 |
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