Xeon L5408 vs Phenom II X3 B75
Xeon L5408
Phenom II X3 B75
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 L5408 is positioned at rank 901 and the Phenom II X3 B75 is on rank 361, so the Phenom II X3 B75 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon L5408
Performance Per Dollar Phenom II X3 B75
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon L5408 | Phenom II X3 B75 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Harpertown (2007−2008) / 45 nm) | 🛑 Legacy (Heka (2009−2010) / 45 nm) |
💎 Value Proposition
| Insight | Xeon L5408 | Phenom II X3 B75 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 L5408 and Phenom II X3 B75
Xeon L5408
The Xeon L5408 is manufactured by Intel. It was released in 2015-01-01. It is based on the Harpertown (2007−2008) architecture. It features 4 cores and 4 threads. Base frequency is 2.133 GHz, with boost up to 0.13 GHz. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: LGA771. Thermal design power (TDP): 40 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 1,769 points. Launch price was $800.
Phenom II X3 B75
The Phenom II X3 B75 is manufactured by AMD. It was released in 2009-01-01. It is based on the Heka (2009−2010) architecture. It features 3 cores and 3 threads. Base frequency is 3 GHz, with boost up to 3 GHz. L3 cache: 6 MB (total). L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 1,783 points. Launch price was $149.
Processing Power
The Xeon L5408 packs 4 cores / 4 threads, while the Phenom II X3 B75 offers 3 cores / 3 threads — the Xeon L5408 has 1 more core. Boost clocks reach 0.13 GHz on the Xeon L5408 versus 3 GHz on the Phenom II X3 B75 — a 183.4% clock advantage for the Phenom II X3 B75 (base: 2.133 GHz vs 3 GHz). The Xeon L5408 uses the Harpertown (2007−2008) architecture (45 nm), while the Phenom II X3 B75 uses Heka (2009−2010) (45 nm). In PassMark, the Xeon L5408 scores 1,769 against the Phenom II X3 B75's 1,783 — a 0.8% lead for the Phenom II X3 B75.
| Feature | Xeon L5408 | Phenom II X3 B75 |
|---|---|---|
| Cores / Threads | 4 / 4+33% | 3 / 3 |
| Boost Clock | 0.13 GHz | 3 GHz+2208% |
| Base Clock | 2.133 GHz | 3 GHz+41% |
| L3 Cache | — | 6 MB (total) |
| L2 Cache | 6 MB (total)+1100% | 512 kB (per core) |
| Process | 45 nm | 45 nm |
| Architecture | Harpertown (2007−2008) | Heka (2009−2010) |
| PassMark | 1,769 | 1,783 |
Memory & Platform
The Xeon L5408 uses the LGA771 socket (PCIe 2.0), while the Phenom II X3 B75 uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Xeon L5408 | Phenom II X3 B75 |
|---|---|---|
| Socket | LGA771 | AM3 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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