Celeron B815 vs Core 2 Duo T5870
Celeron B815
Core 2 Duo T5870
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 B815 is positioned at rank 799 and the Core 2 Duo T5870 is on rank 538, so the Core 2 Duo T5870 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Celeron B815
Performance Per Dollar Core 2 Duo T5870
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron B815 | Core 2 Duo T5870 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($15) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | 🛑 Legacy (Merom (2006−2008) / 65 nm) |
💎 Value Proposition
| Insight | Celeron B815 | Core 2 Duo T5870 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($15) | ✅ 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 B815 and Core 2 Duo T5870
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.
Core 2 Duo T5870
The Core 2 Duo T5870 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. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 2 MB L2 Cache. L2 cache: 2 MB. Built on 65 nm process technology. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 2,089 points. Launch price was $249.
Processing Power
Both the Celeron B815 and Core 2 Duo T5870 share an identical 2-core/2-thread configuration. Boost clocks reach 1.6 GHz on the Celeron B815 versus 2 GHz on the Core 2 Duo T5870 — a 22.2% clock advantage for the Core 2 Duo T5870 (base: 1.6 GHz vs 2 GHz). The Celeron B815 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Core 2 Duo T5870 uses Merom (2006−2008) (65 nm). In PassMark, the Celeron B815 scores 2,093 against the Core 2 Duo T5870's 2,089 — a 0.2% lead for the Celeron B815. L3 cache: 2 MB (total) on the Celeron B815 vs 2 MB L2 Cache on the Core 2 Duo T5870.
| Feature | Celeron B815 | Core 2 Duo T5870 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 1.6 GHz | 2 GHz+25% |
| Base Clock | 1.6 GHz | 2 GHz+25% |
| L3 Cache | 2 MB (total) | 2 MB L2 Cache |
| L2 Cache | 256K (per core) | 2 MB+700% |
| Process | 32 nm-51% | 65 nm |
| Architecture | Sandy Bridge (2011−2013) | Merom (2006−2008) |
| PassMark | 2,093 | 2,089 |
| Geekbench 6 Single | — | 203 |
| Geekbench 6 Multi | — | 314 |
Memory & Platform
Maximum memory speed reaches DDR3-1333 on the Celeron B815 versus DDR2-800 on the Core 2 Duo T5870 — the Celeron B815 supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron B815 supports up to 16 GB of RAM compared to 4 GB — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Celeron B815) vs 0 (Core 2 Duo T5870) — the Celeron B815 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM65,HM67,QM67,QM77 (Celeron B815) and GM965,GM45,PM45 (Core 2 Duo T5870).
| Feature | Celeron B815 | Core 2 Duo T5870 |
|---|---|---|
| Socket | PGA988 | — |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | DDR3-1333+50% | DDR2-800 |
| Max RAM Capacity | 16 GB+300% | 4 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 0 |
Advanced Features
Neither processor supports overclocking. Both support VT-x virtualization. The Celeron B815 includes integrated graphics (HD Graphics (Sandy Bridge)), while the Core 2 Duo T5870 requires a dedicated GPU. Primary use case: Celeron B815 targets Budget, Core 2 Duo T5870 targets Legacy Mobile. Direct competitor: Celeron B815 rivals Pentium 967.
| Feature | Celeron B815 | Core 2 Duo T5870 |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | HD Graphics (Sandy Bridge) | None |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | VT-x | VT-x |
| Target Use | Budget | Legacy Mobile |
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