CPU
GPU
Core 2 Extreme X7900
Core 2 Duo E8435
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 X7900 is positioned at rank 1162 and the Core 2 Duo E8435 is on rank 1152, so the Core 2 Duo E8435 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 X7900
Performance Per Dollar Core 2 Duo E8435
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core 2 Extreme X7900 | Core 2 Duo E8435 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($74) |
| Longevity | 🛑 Legacy (Merom (2006−2008) / 65 nm) | 🛑 Legacy (Penryn (2008−2011) / 45 nm) |
💎 Value Proposition
| Insight | Core 2 Extreme X7900 | Core 2 Duo E8435 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($74) |
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 X7900 and Core 2 Duo E8435
Core 2 Extreme X7900
The Core 2 Extreme X7900 is manufactured by Intel. It was released in 1 September 2007 (18 years ago). It is based on the Merom (2006−2008) 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: 4 MB. Built on 65 nm process technology. Socket: PGA478. Thermal design power (TDP): 44 Watt. Memory support: DDR1. Passmark benchmark score: 1,115 points. Launch price was $851.
Core 2 Duo E8435
The Core 2 Duo E8435 is manufactured by Intel. It was released in 2008-01-01. It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 3.067 GHz, with boost up to 0.07 GHz. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: P. Thermal design power (TDP): 44 Watt. Memory support: DDR2, DDR3. Passmark benchmark score: 1,104 points. Launch price was $249.
Processing Power
Both the Core 2 Extreme X7900 and Core 2 Duo E8435 share an identical 2-core/2-thread configuration. Boost clocks reach 2.8 GHz on the Core 2 Extreme X7900 versus 0.07 GHz on the Core 2 Duo E8435 — a 190.2% clock advantage for the Core 2 Extreme X7900 (base: 2.8 GHz vs 3.067 GHz). The Core 2 Extreme X7900 uses the Merom (2006−2008) architecture (65 nm), while the Core 2 Duo E8435 uses Penryn (2008−2011) (45 nm). In PassMark, the Core 2 Extreme X7900 scores 1,115 against the Core 2 Duo E8435's 1,104 — a 1% lead for the Core 2 Extreme X7900.
| Feature | Core 2 Extreme X7900 | Core 2 Duo E8435 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 2.8 GHz+3900% | 0.07 GHz |
| Base Clock | 2.8 GHz | 3.067 GHz+10% |
| L3 Cache | 0 kB | — |
| L2 Cache | 4 MB | 6 MB (total)+50% |
| Process | 65 nm | 45 nm-31% |
| Architecture | Merom (2006−2008) | Penryn (2008−2011) |
| PassMark | 1,115 | 1,104 |
| Geekbench 6 Single | — | 257 |
Memory & Platform
The Core 2 Extreme X7900 uses the PGA478 socket (PCIe 1.1), while the Core 2 Duo E8435 uses P (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-667 on the Core 2 Extreme X7900 versus DDR3-1333 on the Core 2 Duo E8435 — the Core 2 Duo E8435 supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core 2 Duo E8435 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. Both provide 0 PCIe lanes.
| Feature | Core 2 Extreme X7900 | Core 2 Duo E8435 |
|---|---|---|
| Socket | PGA478 | P |
| PCIe Generation | PCIe 1.1 | PCIe 1.1 |
| Max RAM Speed | DDR2-667 | DDR3-1333+50% |
| Max RAM Capacity | 4 GB | 16 GB+300% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | 0 |
Advanced Features
Only the Core 2 Extreme X7900 has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x (Core 2 Extreme X7900) vs VT-x, VT-d (Core 2 Duo E8435). Primary use case: Core 2 Extreme X7900 targets Mobile.
| Feature | Core 2 Extreme X7900 | Core 2 Duo E8435 |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | Yes | No |
| AVX-512 | No | No |
| Virtualization | VT-x | VT-x, VT-d |
| Target Use | Mobile | — |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Core 2 Extreme X7900 and Core 2 Duo E8435
