CPU
GPU
Core i7-640M
Celeron M 900
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 i7-640M is positioned at rank 107 and the Celeron M 900 is on rank 797, 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 Core i7-640M
Performance Per Dollar Celeron M 900
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-640M | Celeron M 900 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($10) |
| Longevity | 🛑 Legacy (Arrandale (2010−2011) / 32 nm) | 🛑 Legacy (Penryn (2008−2011) / 45 nm) |
💎 Value Proposition
| Insight | Core i7-640M | Celeron M 900 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($10) |
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 i7-640M and Celeron M 900
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.
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.
Processing Power
The Core i7-640M packs 2 cores / 4 threads, while the Celeron M 900 offers 1 cores / 1 threads — the Core i7-640M has 1 more core. Boost clocks reach 3.46 GHz on the Core i7-640M versus 2.2 GHz on the Celeron M 900 — a 44.5% clock advantage for the Core i7-640M. The Core i7-640M uses the Arrandale (2010−2011) architecture (32 nm), while the Celeron M 900 uses Penryn (2008−2011) (45 nm). In PassMark, the Core i7-640M scores 2,092 against the Celeron M 900's 2,101 — a 0.4% lead for the Celeron M 900.
| Feature | Core i7-640M | Celeron M 900 |
|---|---|---|
| Cores / Threads | 2 / 4+100% | 1 / 1 |
| Boost Clock | 3.46 GHz+57% | 2.2 GHz |
| Base Clock | 2.8 GHz | — |
| L3 Cache | 4 MB (total) | — |
| L2 Cache | 256K (per core) | 1 MB+300% |
| Process | 32 nm-29% | 45 nm |
| Architecture | Arrandale (2010−2011) | Penryn (2008−2011) |
| PassMark | 2,092 | 2,101 |
Memory & Platform
The Core i7-640M uses the PGA988 socket (PCIe 2.0), while the Celeron M 900 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Core i7-640M | Celeron M 900 |
|---|---|---|
| Socket | PGA988 | PGA478 |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | 1066 | — |
| Max RAM Capacity | 8 | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 16 | — |
Advanced Features
Virtualization: true (Core i7-640M) / not specified (Celeron M 900). 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 | Core i7-640M | Celeron M 900 |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Intel HD Graphics (Ironlake) | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | true | — |
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The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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