
Pentium 4405U vs Core 2 Duo T5900

Pentium 4405U

Core 2 Duo T5900
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 T5900 is on rank 19, so the Core 2 Duo T5900 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 T5900
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium 4405U | Core 2 Duo T5900 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($5) |
| Longevity | 🛑 Legacy (NetBurst (2000−2006) / 14 nm) | 🛑 Legacy (Merom (2006−2008) / 65 nm) |
💎 Value Proposition
| Insight | Pentium 4405U | Core 2 Duo T5900 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($5) |
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 T5900

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 T5900
The Core 2 Duo T5900 is manufactured by Intel. It was released in 2008-01-01. It is based on the Merom (2006−2008) architecture. It features 2 cores and 2 threads. Max frequency: 2.2 GHz. L2 cache: 2 MB. Built on 65 nm process technology. Socket: P. Thermal design power (TDP): 2 MB. Passmark benchmark score: 2,123 points. Launch price was $249.
Processing Power
The Pentium 4405U packs 2 cores / 4 threads, matching the Core 2 Duo T5900's 2 cores. Boost clocks reach 2.1 GHz on the Pentium 4405U versus 2.2 GHz on the Core 2 Duo T5900 — a 4.7% clock advantage for the Core 2 Duo T5900. The Pentium 4405U uses the NetBurst (2000−2006) architecture (14 nm), while the Core 2 Duo T5900 uses Merom (2006−2008) (65 nm). In PassMark, the Pentium 4405U scores 2,122 against the Core 2 Duo T5900's 2,123 — a 0% lead for the Core 2 Duo T5900.
| Feature | Pentium 4405U | Core 2 Duo T5900 |
|---|---|---|
| Cores / Threads | 2 / 4 | 2 / 2 |
| Boost Clock | 2.1 GHz | 2.2 GHz+5% |
| Base Clock | 2.1 GHz | — |
| L3 Cache | 2 MB | — |
| L2 Cache | 512 kB | 2 MB+300% |
| Process | 14 nm-78% | 65 nm |
| Architecture | NetBurst (2000−2006) | Merom (2006−2008) |
| PassMark | 2,122 | 2,123 |
Memory & Platform
The Pentium 4405U uses the BGA1356 socket (PCIe 3.0), while the Core 2 Duo T5900 uses P (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Pentium 4405U | Core 2 Duo T5900 |
|---|---|---|
| Socket | BGA1356 | P |
| PCIe Generation | PCIe 3.0+173% | PCIe 1.1 |
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