
Pentium D 915 vs Celeron B820

Pentium D 915

Celeron B820
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 D 915 is positioned at rank 1002 and the Celeron B820 is on rank 1109, so the Pentium D 915 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Pentium D 915
Performance Per Dollar Celeron B820
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium D 915 | Celeron B820 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($10) | ⚠️ Higher cost ($15) |
| Longevity | 🛑 Legacy (NetBurst (2000−2006) / 65 nm) | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) |
💎 Value Proposition
| Insight | Pentium D 915 | Celeron B820 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+38%) | ❌ 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 Pentium D 915 and Celeron B820

Pentium D 915
The Pentium D 915 is manufactured by Intel. It was released in 23 July 2006 (19 years ago). It is based on the NetBurst (2000−2006) architecture. It features 2 cores and 2 threads. Base frequency is 2.8 GHz, with boost up to 2.8 GHz. L3 cache: 0 kB. L2 cache: 2 MB (total). Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 95 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 705 points. Launch price was $74.

Celeron B820
The Celeron B820 is manufactured by Intel. It was released in 1 July 2012 (13 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 1.7 GHz, with boost up to 1.7 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: 765 points. Launch price was $86.
Processing Power
Both the Pentium D 915 and Celeron B820 share an identical 2-core/2-thread configuration. Boost clocks reach 2.8 GHz on the Pentium D 915 versus 1.7 GHz on the Celeron B820 — a 48.9% clock advantage for the Pentium D 915 (base: 2.8 GHz vs 1.7 GHz). The Pentium D 915 uses the NetBurst (2000−2006) architecture (65 nm), while the Celeron B820 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Pentium D 915 scores 705 against the Celeron B820's 765 — a 8.2% lead for the Celeron B820. L3 cache: 0 kB on the Pentium D 915 vs 2 MB (total) on the Celeron B820.
| Feature | Pentium D 915 | Celeron B820 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 2.8 GHz+65% | 1.7 GHz |
| Base Clock | 2.8 GHz+65% | 1.7 GHz |
| L3 Cache | 0 kB | 2 MB (total) |
| L2 Cache | 2 MB (total)+700% | 256K (per core) |
| Process | 65 nm | 32 nm-51% |
| Architecture | NetBurst (2000−2006) | Sandy Bridge (2011−2013) |
| PassMark | 705 | 765+9% |
Memory & Platform
The Pentium D 915 uses the LGA775 socket (PCIe 1.1), while the Celeron B820 uses PGA988 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Pentium D 915 | Celeron B820 |
|---|---|---|
| Socket | LGA775 | 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 (Pentium D 915) / VT-x (Celeron B820). The Celeron B820 includes integrated graphics (HD Graphics (Sandy Bridge)), while the Pentium D 915 requires a dedicated GPU. Primary use case: Celeron B820 targets Budget. Direct competitor: Celeron B820 rivals Pentium 967.
| Feature | Pentium D 915 | Celeron B820 |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | HD Graphics (Sandy Bridge) |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x |
| Target Use | — | Budget |
Value Analysis
The Pentium D 915 launched at $74 MSRP, while the Celeron B820 debuted at $86. At current prices ($10 vs $15), the Pentium D 915 is $5 cheaper. In terms of value (PassMark points per dollar), the Pentium D 915 delivers 70.5 pts/$ vs 51.0 pts/$ for the Celeron B820 — making the Pentium D 915 the 32.1% better value option.
| Feature | Pentium D 915 | Celeron B820 |
|---|---|---|
| MSRP | $74-14% | $86 |
| Avg Price (30d) | $10-33% | $15 |
| Performance per Dollar | 70.5+38% | 51.0 |
| Release Date | 2006 | 2012 |
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