Core 2 Duo P8400 vs Core i5-4300U
Core 2 Duo P8400
Core i5-4300U
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. Components placed above yours deliver better value for money. The Core 2 Duo P8400 is positioned at rank 33 and the Core i5-4300U is on rank 542, so the Core 2 Duo P8400 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core 2 Duo P8400
Performance Per Dollar Core i5-4300U
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core 2 Duo P8400 | Core i5-4300U |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($10) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Penryn (2008−2011) / 45 nm) | 🛑 Legacy (Haswell (2013−2015) / 22 nm) |
💎 Value Proposition
| Insight | Core 2 Duo P8400 | Core i5-4300U |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($10) | ✅ More affordable ($0) |
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 2 Duo P8400 and Core i5-4300U
Core 2 Duo P8400
The Core 2 Duo P8400 is manufactured by Intel. It was released in 15 July 2008 (17 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2.26 GHz, with boost up to 2.26 GHz. L3 cache: 3 MB L2 Cache. L2 cache: 3 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 25 Watt. Passmark benchmark score: 2,497 points. Launch price was $209.
Core i5-4300U
The Core i5-4300U is manufactured by Intel. It was released in 1 October 2013 (12 years ago). It is based on the Haswell (2013−2015) architecture. It features 2 cores and 4 threads. Base frequency is 1.9 GHz, with boost up to 2.9 GHz. L3 cache: 3 MB. L2 cache: 512 kB. Built on 22 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 15 Watt. Memory support: DDR3. Passmark benchmark score: 2,482 points. Launch price was $281.
Processing Power
The Core 2 Duo P8400 packs 2 cores / 2 threads, matching the Core i5-4300U's 2 cores. Boost clocks reach 2.26 GHz on the Core 2 Duo P8400 versus 2.9 GHz on the Core i5-4300U — a 24.8% clock advantage for the Core i5-4300U (base: 2.26 GHz vs 1.9 GHz). The Core 2 Duo P8400 uses the Penryn (2008−2011) architecture (45 nm), while the Core i5-4300U uses Haswell (2013−2015) (22 nm). In PassMark, the Core 2 Duo P8400 scores 2,497 against the Core i5-4300U's 2,482 — a 0.6% lead for the Core 2 Duo P8400. L3 cache: 3 MB L2 Cache on the Core 2 Duo P8400 vs 3 MB on the Core i5-4300U.
| Feature | Core 2 Duo P8400 | Core i5-4300U |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 4 |
| Boost Clock | 2.26 GHz | 2.9 GHz+28% |
| Base Clock | 2.26 GHz+19% | 1.9 GHz |
| L3 Cache | 3 MB L2 Cache | 3 MB |
| L2 Cache | 3 MB+500% | 512 kB |
| Process | 45 nm | 22 nm-51% |
| Architecture | Penryn (2008−2011) | Haswell (2013−2015) |
| PassMark | 2,497 | 2,482 |
| Geekbench 6 Single | — | 607 |
| Geekbench 6 Multi | — | 1,722 |
Memory & Platform
The Core 2 Duo P8400 uses the PGA478 socket (PCIe 1.1), while the Core i5-4300U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 1066 on the Core 2 Duo P8400 versus DDR3L-1600 on the Core i5-4300U — the Core 2 Duo P8400 supports 198.9% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-4300U supports up to 16 GB of RAM compared to 8 — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Core 2 Duo P8400) vs 12 (Core i5-4300U) — the Core i5-4300U offers 12 more lanes for additional GPUs or NVMe drives. Chipset compatibility: GM45,GS45,PM45 (Core 2 Duo P8400) and HM86,HM87 (Core i5-4300U).
| Feature | Core 2 Duo P8400 | Core i5-4300U |
|---|---|---|
| Socket | PGA478 | FCBGA1168 |
| PCIe Generation | PCIe 1.1 | PCIe 3.0+173% |
| Max RAM Speed | 1066+35433% | DDR3L-1600 |
| Max RAM Capacity | 8 | 16 GB+209715100% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | 12 |
Advanced Features
Virtualization support: true (Core 2 Duo P8400) vs Yes (Core i5-4300U). The Core i5-4300U includes integrated graphics (Intel HD Graphics 4400), while the Core 2 Duo P8400 requires a dedicated GPU. Direct competitor: Core 2 Duo P8400 rivals Turion II Ultra M600.
| Feature | Core 2 Duo P8400 | Core i5-4300U |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | None | Intel HD Graphics 4400 |
| Unlocked | No | — |
| AVX-512 | No | No |
| Virtualization | true | Yes |
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