
Core 2 Extreme QX9770 vs Xeon L5640

Core 2 Extreme QX9770

Xeon L5640
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 Core 2 Extreme QX9770 is positioned at rank 1088 and the Xeon L5640 is on rank 994, so the Xeon L5640 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core 2 Extreme QX9770
Performance Per Dollar Xeon L5640
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core 2 Extreme QX9770 | Xeon L5640 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($1,399) | ✅ More affordable ($996) |
| Longevity | 🛑 Legacy (Yorkfield (2007−2009) / 45 nm) | 🛑 Legacy (Westmere-EP (2010−2011) / 32 nm) |
💎 Value Proposition
| Insight | Core 2 Extreme QX9770 | Xeon L5640 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+42%) |
| Upfront Cost | ⚠️ Higher cost ($1,399) | ✅ More affordable ($996) |
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 Core 2 Extreme QX9770 and Xeon L5640

Core 2 Extreme QX9770
The Core 2 Extreme QX9770 is manufactured by Intel. It was released in 2008-01-01. It is based on the Yorkfield (2007−2009) architecture. It features 4 cores and 4 threads. Base frequency is 3.2 GHz, with boost up to 3.2 GHz. L3 cache: 0 kB. L2 cache: 12 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 136 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 4,611 points. Launch price was $249.

Xeon L5640
The Xeon L5640 is manufactured by Intel. It was released in 16 March 2010 (15 years ago). It is based on the Westmere-EP (2010−2011) architecture. It features 6 cores and 12 threads. Base frequency is 2.26 GHz, with boost up to 2.8 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 60 Watt. Memory support: DDR3. Passmark benchmark score: 4,659 points. Launch price was $200.
Processing Power
The Core 2 Extreme QX9770 packs 4 cores / 4 threads, while the Xeon L5640 offers 6 cores / 12 threads — the Xeon L5640 has 2 more cores. Boost clocks reach 3.2 GHz on the Core 2 Extreme QX9770 versus 2.8 GHz on the Xeon L5640 — a 13.3% clock advantage for the Core 2 Extreme QX9770 (base: 3.2 GHz vs 2.26 GHz). The Core 2 Extreme QX9770 uses the Yorkfield (2007−2009) architecture (45 nm), while the Xeon L5640 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Core 2 Extreme QX9770 scores 4,611 against the Xeon L5640's 4,659 — a 1% lead for the Xeon L5640. L3 cache: 0 kB on the Core 2 Extreme QX9770 vs 12 MB (total) on the Xeon L5640.
| Feature | Core 2 Extreme QX9770 | Xeon L5640 |
|---|---|---|
| Cores / Threads | 4 / 4 | 6 / 12+50% |
| Boost Clock | 3.2 GHz+14% | 2.8 GHz |
| Base Clock | 3.2 GHz+42% | 2.26 GHz |
| L3 Cache | 0 kB | 12 MB (total) |
| L2 Cache | 12 MB (total)+4700% | 256 kB (per core) |
| Process | 45 nm | 32 nm-29% |
| Architecture | Yorkfield (2007−2009) | Westmere-EP (2010−2011) |
| PassMark | 4,611 | 4,659+1% |
| Cinebench R23 Multi | 2,200 | — |
| Geekbench 6 Single | 451 | — |
| Geekbench 6 Multi | 1,583 | — |
Memory & Platform
The Core 2 Extreme QX9770 uses the LGA775 socket (PCIe 1.1), while the Xeon L5640 uses LGA1366 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1600 on the Core 2 Extreme QX9770 versus DDR3 1333 MHz on the Xeon L5640 — the Xeon L5640 supports 200% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon L5640 supports up to 288 GB of RAM compared to 16 GB — 178.9% more capacity for professional workloads. Memory channels: 2 (Core 2 Extreme QX9770) vs 3 (Xeon L5640). PCIe lanes: 16 (Core 2 Extreme QX9770) vs 0 (Xeon L5640) — the Core 2 Extreme QX9770 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X48,X38,P45 (Core 2 Extreme QX9770) and Intel 5520,Intel X58 (Xeon L5640).
| Feature | Core 2 Extreme QX9770 | Xeon L5640 |
|---|---|---|
| Socket | LGA775 | LGA1366 |
| PCIe Generation | PCIe 1.1 | PCIe 5.0+355% |
| Max RAM Speed | DDR3-1600 | DDR3 1333 MHz |
| Max RAM Capacity | 16 GB | 288 GB+1700% |
| RAM Channels | 2 | 3+50% |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 16 | 0 |
Advanced Features
Only the Core 2 Extreme QX9770 has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x (Core 2 Extreme QX9770) vs true (Xeon L5640). Primary use case: Core 2 Extreme QX9770 targets Enthusiast, Xeon L5640 targets Server Low Power.
| Feature | Core 2 Extreme QX9770 | Xeon L5640 |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | Yes | No |
| AVX-512 | No | No |
| Virtualization | VT-x | true |
| Target Use | Enthusiast | Server Low Power |
Value Analysis
The Core 2 Extreme QX9770 launched at $1399 MSRP, while the Xeon L5640 debuted at $996.
| Feature | Core 2 Extreme QX9770 | Xeon L5640 |
|---|---|---|
| MSRP | $1399 | $996-29% |
| Avg Price (30d) | $1399 | — |
| Release Date | 2008 | 2010 |
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