CPU
GPU
Xeon L7455
Core 2 Duo P8400
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 Xeon L7455 is positioned at rank 793 and the Core 2 Duo P8400 is on rank 33, so the Core 2 Duo P8400 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon L7455
Performance Per Dollar Core 2 Duo P8400
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon L7455 | Core 2 Duo P8400 |
|---|---|---|
| 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 (Legacy / 45 nm) | 🛑 Legacy (Penryn (2008−2011) / 45 nm) |
💎 Value Proposition
| Insight | Xeon L7455 | Core 2 Duo P8400 |
|---|---|---|
| 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 Xeon L7455 and Core 2 Duo P8400
Xeon L7455
The Xeon L7455 is manufactured by Intel. It was released in 2015-01-01. Base frequency: 2.13 GHz. L3 cache: 12 MB L2 Cache. Built on 45 nm process technology. Socket: PGA604. Thermal design power (TDP): 65 Watt. Passmark benchmark score: 2,494 points. Launch price was $800.
Core 2 Duo P8400
The Core 2 Duo P8400 is manufactured by Intel. It was released in 15 July 2008 (17 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2.26 GHz, with boost up to 2.26 GHz. L3 cache: 3 MB L2 Cache. L2 cache: 3 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 25 Watt. Passmark benchmark score: 2,497 points. Launch price was $209.
Processing Power
The Core 2 Duo P8400 is built on the Penryn (2008−2011) architecture. In PassMark, the Xeon L7455 scores 2,494 against the Core 2 Duo P8400's 2,497 — a 0.1% lead for the Core 2 Duo P8400. L3 cache: 12 MB L2 Cache on the Xeon L7455 vs 3 MB L2 Cache on the Core 2 Duo P8400.
| Feature | Xeon L7455 | Core 2 Duo P8400 |
|---|---|---|
| Cores / Threads | — | 2 / 2 |
| Boost Clock | — | 2.26 GHz |
| Base Clock | 2.13 GHz | 2.26 GHz+6% |
| L3 Cache | 12 MB L2 Cache+300% | 3 MB L2 Cache |
| L2 Cache | — | 3 MB |
| Process | 45 nm | 45 nm |
| Architecture | — | Penryn (2008−2011) |
| PassMark | 2,494 | 2,497 |
Memory & Platform
The Xeon L7455 uses the PGA604 socket (PCIe 2.0), while the Core 2 Duo P8400 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Xeon L7455 | Core 2 Duo P8400 |
|---|---|---|
| Socket | PGA604 | 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 | — | 0 |
Advanced Features
Virtualization: not specified (Xeon L7455) / true (Core 2 Duo P8400). Direct competitor: Core 2 Duo P8400 rivals Turion II Ultra M600.
| Feature | Xeon L7455 | Core 2 Duo P8400 |
|---|---|---|
| Integrated GPU | — | No |
| IGPU Model | — | None |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | true |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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