Pentium 3805U vs Core 2 Duo T9900
Pentium 3805U
Core 2 Duo T9900
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 3805U is positioned at rank 344 and the Core 2 Duo T9900 is on rank 635, so the Pentium 3805U offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Pentium 3805U
Performance Per Dollar Core 2 Duo T9900
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium 3805U | Core 2 Duo T9900 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Broadwell-U (2015) / 14 nm) | 🛑 Legacy (Penryn (2008−2011) / 45 nm) |
💎 Value Proposition
| Insight | Pentium 3805U | Core 2 Duo T9900 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 3805U and Core 2 Duo T9900
Pentium 3805U
The Pentium 3805U is manufactured by Intel. It was released in 1 March 2015 (10 years ago). It is based on the Broadwell-U (2015) architecture. It features 2 cores and 2 threads. Base frequency is 1.9 GHz, with boost up to 1.9 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 15 Watt. Memory support: DDR3. Passmark benchmark score: 1,196 points. Launch price was $161.
Core 2 Duo T9900
The Core 2 Duo T9900 is manufactured by Intel. It was released in 2 June 2009 (16 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 3.06 GHz, with boost up to 0.07 GHz. L3 cache: 6 MB L2 Cache. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Memory support: DDR2, DDR3. Passmark benchmark score: 1,204 points. Launch price was $530.
Processing Power
Both the Pentium 3805U and Core 2 Duo T9900 share an identical 2-core/2-thread configuration. Boost clocks reach 1.9 GHz on the Pentium 3805U versus 0.07 GHz on the Core 2 Duo T9900 — a 185.8% clock advantage for the Pentium 3805U (base: 1.9 GHz vs 3.06 GHz). The Pentium 3805U uses the Broadwell-U (2015) architecture (14 nm), while the Core 2 Duo T9900 uses Penryn (2008−2011) (45 nm). In PassMark, the Pentium 3805U scores 1,196 against the Core 2 Duo T9900's 1,204 — a 0.7% lead for the Core 2 Duo T9900. L3 cache: 2 MB (total) on the Pentium 3805U vs 6 MB L2 Cache on the Core 2 Duo T9900.
| Feature | Pentium 3805U | Core 2 Duo T9900 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 1.9 GHz+2614% | 0.07 GHz |
| Base Clock | 1.9 GHz | 3.06 GHz+61% |
| L3 Cache | 2 MB (total) | 6 MB L2 Cache+200% |
| L2 Cache | 256K (per core) | 6 MB (total)+2300% |
| Process | 14 nm-69% | 45 nm |
| Architecture | Broadwell-U (2015) | Penryn (2008−2011) |
| PassMark | 1,196 | 1,204 |
Memory & Platform
The Pentium 3805U uses the FCBGA1168 socket (PCIe 3.0), while the Core 2 Duo T9900 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Pentium 3805U | Core 2 Duo T9900 |
|---|---|---|
| Socket | FCBGA1168 | PGA478 |
| PCIe Generation | PCIe 3.0+173% | PCIe 1.1 |
| Max RAM Speed | DDR3L-1600 | — |
| Max RAM Capacity | 16 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 12 | — |
Advanced Features
Virtualization: VT-x, VT-d (Pentium 3805U) / not specified (Core 2 Duo T9900). The Pentium 3805U includes integrated graphics (HD Graphics (Broadwell)), while the Core 2 Duo T9900 requires a dedicated GPU. Primary use case: Pentium 3805U targets Mobile.
| Feature | Pentium 3805U | Core 2 Duo T9900 |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | HD Graphics (Broadwell) | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | VT-x, VT-d | — |
| Target Use | Mobile | — |
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