
Pentium 4405U vs Core 2 Duo SL9400

Pentium 4405U

Core 2 Duo SL9400
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 Pentium 4405U is positioned at rank 528 and the Core 2 Duo SL9400 is on rank 1147, so the Pentium 4405U offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Pentium 4405U
Performance Per Dollar Core 2 Duo SL9400
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium 4405U | Core 2 Duo SL9400 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($284) |
| Longevity | 🛑 Legacy (NetBurst (2000−2006) / 14 nm) | 🛑 Legacy (Penryn (2008−2011) / 45 nm) |
💎 Value Proposition
| Insight | Pentium 4405U | Core 2 Duo SL9400 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($284) |
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 Pentium 4405U and Core 2 Duo SL9400

Pentium 4405U
The Pentium 4405U is manufactured by Intel. It was released in 1 September 2015 (10 years ago). It is based on the NetBurst (2000−2006) architecture. It features 2 cores and 4 threads. Base frequency is 2.1 GHz, with boost up to 2.1 GHz. L3 cache: 2 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 15 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 2,122 points. Launch price was $161.

Core 2 Duo SL9400
The Core 2 Duo SL9400 is manufactured by Intel. It was released in 20 August 2008 (17 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 1.86 GHz, with boost up to 1.86 GHz. L3 cache: 6 MB L2 Cache. L2 cache: 6 MB. Built on 45 nm process technology. Socket: BGA956. Thermal design power (TDP): 17 Watt. Passmark benchmark score: 2,144 points. Launch price was $284.
Processing Power
The Pentium 4405U packs 2 cores / 4 threads, matching the Core 2 Duo SL9400's 2 cores. Boost clocks reach 2.1 GHz on the Pentium 4405U versus 1.86 GHz on the Core 2 Duo SL9400 — a 12.1% clock advantage for the Pentium 4405U (base: 2.1 GHz vs 1.86 GHz). The Pentium 4405U uses the NetBurst (2000−2006) architecture (14 nm), while the Core 2 Duo SL9400 uses Penryn (2008−2011) (45 nm). In PassMark, the Pentium 4405U scores 2,122 against the Core 2 Duo SL9400's 2,144 — a 1% lead for the Core 2 Duo SL9400. L3 cache: 2 MB on the Pentium 4405U vs 6 MB L2 Cache on the Core 2 Duo SL9400.
| Feature | Pentium 4405U | Core 2 Duo SL9400 |
|---|---|---|
| Cores / Threads | 2 / 4 | 2 / 2 |
| Boost Clock | 2.1 GHz+13% | 1.86 GHz |
| Base Clock | 2.1 GHz+13% | 1.86 GHz |
| L3 Cache | 2 MB | 6 MB L2 Cache+200% |
| L2 Cache | 512 kB | 6 MB+1100% |
| Process | 14 nm-69% | 45 nm |
| Architecture | NetBurst (2000−2006) | Penryn (2008−2011) |
| PassMark | 2,122 | 2,144+1% |
Memory & Platform
The Pentium 4405U uses the BGA1356 socket (PCIe 3.0), while the Core 2 Duo SL9400 uses BGA956 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Pentium 4405U | Core 2 Duo SL9400 |
|---|---|---|
| Socket | BGA1356 | BGA956 |
| PCIe Generation | PCIe 3.0+173% | PCIe 1.1 |
| Max RAM Speed | — | DDR3-1066 |
| Max RAM Capacity | — | 8 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 16 |
Advanced Features
Virtualization: not specified (Pentium 4405U) / VT-x (Core 2 Duo SL9400). Primary use case: Core 2 Duo SL9400 targets Mobile.
| Feature | Pentium 4405U | Core 2 Duo SL9400 |
|---|---|---|
| Integrated GPU | — | No |
| Virtualization | — | VT-x |
| Target Use | — | Mobile |
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