Celeron M 900 vs Core i7-640M
Celeron M 900
Core i7-640M
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 Celeron M 900 is positioned at rank 797 and the Core i7-640M is on rank 107, so the Core i7-640M offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Celeron M 900
Performance Per Dollar Core i7-640M
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron M 900 | Core i7-640M |
|---|---|---|
| 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 (Arrandale (2010−2011) / 32 nm) |
💎 Value Proposition
| Insight | Celeron M 900 | Core i7-640M |
|---|---|---|
| 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 Celeron M 900 and Core i7-640M
Celeron M 900
The Celeron M 900 is manufactured by Intel. It was released in 1 April 2009 (16 years ago). It is based on the Penryn (2008−2011) architecture. It features 1 cores and 1 threads. Max frequency: 2.2 GHz. L2 cache: 1 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 1 MB. Passmark benchmark score: 2,101 points. Launch price was $70.
Core i7-640M
The Core i7-640M is manufactured by Intel. It was released in 1 September 2010 (15 years ago). It is based on the Arrandale (2010−2011) architecture. It features 2 cores and 4 threads. Base frequency is 2.8 GHz, with boost up to 3.46 GHz. L3 cache: 4 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: PGA988. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 2,092 points. Launch price was $346.
Processing Power
The Celeron M 900 packs 1 cores / 1 threads, while the Core i7-640M offers 2 cores / 4 threads — the Core i7-640M has 1 more core. Boost clocks reach 2.2 GHz on the Celeron M 900 versus 3.46 GHz on the Core i7-640M — a 44.5% clock advantage for the Core i7-640M. The Celeron M 900 uses the Penryn (2008−2011) architecture (45 nm), while the Core i7-640M uses Arrandale (2010−2011) (32 nm). In PassMark, the Celeron M 900 scores 2,101 against the Core i7-640M's 2,092 — a 0.4% lead for the Celeron M 900.
| Feature | Celeron M 900 | Core i7-640M |
|---|---|---|
| Cores / Threads | 1 / 1 | 2 / 4+100% |
| Boost Clock | 2.2 GHz | 3.46 GHz+57% |
| Base Clock | — | 2.8 GHz |
| L3 Cache | — | 4 MB (total) |
| L2 Cache | 1 MB+300% | 256K (per core) |
| Process | 45 nm | 32 nm-29% |
| Architecture | Penryn (2008−2011) | Arrandale (2010−2011) |
| PassMark | 2,101 | 2,092 |
Memory & Platform
The Celeron M 900 uses the PGA478 socket (PCIe 1.1), while the Core i7-640M uses PGA988 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Celeron M 900 | Core i7-640M |
|---|---|---|
| Socket | PGA478 | PGA988 |
| PCIe Generation | PCIe 1.1 | PCIe 2.0+82% |
| Max RAM Speed | — | 1066 |
| Max RAM Capacity | — | 8 |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 16 |
Advanced Features
Virtualization: not specified (Celeron M 900) / true (Core i7-640M). The Core i7-640M includes integrated graphics (Intel HD Graphics (Ironlake)), while the Celeron M 900 requires a dedicated GPU. Direct competitor: Core i7-640M rivals Core 2 Duo T9600.
| Feature | Celeron M 900 | Core i7-640M |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | Intel HD Graphics (Ironlake) |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | true |
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