Celeron M 900 vs Celeron B815
Celeron M 900
Celeron B815
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 Celeron B815 is on rank 799, so the Celeron M 900 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 Celeron B815
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron M 900 | Celeron B815 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($10) | ⚠️ Higher cost ($15) |
| Longevity | 🛑 Legacy (Penryn (2008−2011) / 45 nm) | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) |
💎 Value Proposition
| Insight | Celeron M 900 | Celeron B815 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+51%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($10) | ⚠️ Higher cost ($15) |
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 Celeron B815
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.
Celeron B815
The Celeron B815 is manufactured by Intel. It was released in 1 January 2012 (13 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 1.6 GHz, with boost up to 1.6 GHz. L3 cache: 2 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: 2,093 points. Launch price was $86.
Processing Power
The Celeron M 900 packs 1 cores / 1 threads, while the Celeron B815 offers 2 cores / 2 threads — the Celeron B815 has 1 more core. Boost clocks reach 2.2 GHz on the Celeron M 900 versus 1.6 GHz on the Celeron B815 — a 31.6% clock advantage for the Celeron M 900. The Celeron M 900 uses the Penryn (2008−2011) architecture (45 nm), while the Celeron B815 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Celeron M 900 scores 2,101 against the Celeron B815's 2,093 — a 0.4% lead for the Celeron M 900.
| Feature | Celeron M 900 | Celeron B815 |
|---|---|---|
| Cores / Threads | 1 / 1 | 2 / 2+100% |
| Boost Clock | 2.2 GHz+38% | 1.6 GHz |
| Base Clock | — | 1.6 GHz |
| L3 Cache | — | 2 MB (total) |
| L2 Cache | 1 MB+300% | 256K (per core) |
| Process | 45 nm | 32 nm-29% |
| Architecture | Penryn (2008−2011) | Sandy Bridge (2011−2013) |
| PassMark | 2,101 | 2,093 |
Memory & Platform
The Celeron M 900 uses the PGA478 socket (PCIe 1.1), while the Celeron B815 uses PGA988 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Celeron M 900 | Celeron B815 |
|---|---|---|
| Socket | PGA478 | PGA988 |
| PCIe Generation | PCIe 1.1 | PCIe 2.0+82% |
| Max RAM Speed | — | DDR3-1333 |
| Max RAM Capacity | — | 16 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 16 |
Advanced Features
Virtualization: not specified (Celeron M 900) / VT-x (Celeron B815). The Celeron B815 includes integrated graphics (HD Graphics (Sandy Bridge)), while the Celeron M 900 requires a dedicated GPU. Primary use case: Celeron B815 targets Budget. Direct competitor: Celeron B815 rivals Pentium 967.
| Feature | Celeron M 900 | Celeron B815 |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | HD Graphics (Sandy Bridge) |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x |
| Target Use | — | Budget |
Value Analysis
The Celeron M 900 launched at $86 MSRP, while the Celeron B815 debuted at $86. At current prices ($10 vs $15), the Celeron M 900 is $5 cheaper. In terms of value (PassMark points per dollar), the Celeron M 900 delivers 210.1 pts/$ vs 139.5 pts/$ for the Celeron B815 — making the Celeron M 900 the 40.4% better value option.
| Feature | Celeron M 900 | Celeron B815 |
|---|---|---|
| MSRP | $86 | $86 |
| Avg Price (30d) | $10-33% | $15 |
| Performance per Dollar | 210.1+51% | 139.5 |
| Release Date | 2009 | 2012 |
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