Xeon E5-2665 vs Opteron 6386 SE
Xeon E5-2665
Opteron 6386 SE
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 E5-2665 is positioned at rank 348 and the Opteron 6386 SE is on rank 33, so the Opteron 6386 SE offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon E5-2665
Performance Per Dollar Opteron 6386 SE
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon E5-2665 | Opteron 6386 SE |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($880) |
| Longevity | 🛑 Legacy (Sandy Bridge-EP (2012) / 32 nm) | 🛑 Legacy (Abu Dhabi (2012) / 32 nm) |
💎 Value Proposition
| Insight | Xeon E5-2665 | Opteron 6386 SE |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($880) |
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 E5-2665 and Opteron 6386 SE
Xeon E5-2665
The Xeon E5-2665 is manufactured by Intel. It was released in 6 March 2012 (13 years ago). It is based on the Sandy Bridge-EP (2012) architecture. It features 8 cores and 16 threads. Base frequency is 2.4 GHz, with boost up to 3.1 GHz. L3 cache: 20480 kB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA2011. Thermal design power (TDP): 115 Watt. Memory support: DDR3. Passmark benchmark score: 8,293 points. Launch price was $142.
Opteron 6386 SE
The Opteron 6386 SE is manufactured by AMD. It was released in 5 November 2012 (13 years ago). It is based on the Abu Dhabi (2012) architecture. It features 16 cores and 16 threads. Base frequency is 2.8 GHz, with boost up to 3.5 GHz. L3 cache: 8 MB (total). L2 cache: 16 MB. Built on 32 nm process technology. Socket: G34. Thermal design power (TDP): 140 Watt. Memory support: DDR3. Passmark benchmark score: 8,291 points. Launch price was $2,408.
Processing Power
The Xeon E5-2665 packs 8 cores / 16 threads, while the Opteron 6386 SE offers 16 cores / 16 threads — the Opteron 6386 SE has 8 more cores. Boost clocks reach 3.1 GHz on the Xeon E5-2665 versus 3.5 GHz on the Opteron 6386 SE — a 12.1% clock advantage for the Opteron 6386 SE (base: 2.4 GHz vs 2.8 GHz). The Xeon E5-2665 uses the Sandy Bridge-EP (2012) architecture (32 nm), while the Opteron 6386 SE uses Abu Dhabi (2012) (32 nm). In PassMark, the Xeon E5-2665 scores 8,293 against the Opteron 6386 SE's 8,291 — a 0% lead for the Xeon E5-2665. L3 cache: 20480 kB (total) on the Xeon E5-2665 vs 8 MB (total) on the Opteron 6386 SE.
| Feature | Xeon E5-2665 | Opteron 6386 SE |
|---|---|---|
| Cores / Threads | 8 / 16 | 16 / 16+100% |
| Boost Clock | 3.1 GHz | 3.5 GHz+13% |
| Base Clock | 2.4 GHz | 2.8 GHz+17% |
| L3 Cache | 20480 kB (total)+150% | 8 MB (total) |
| L2 Cache | 256 kB (per core) | 16 MB+6300% |
| Process | 32 nm | 32 nm |
| Architecture | Sandy Bridge-EP (2012) | Abu Dhabi (2012) |
| PassMark | 8,293 | 8,291 |
Memory & Platform
The Xeon E5-2665 uses the LGA2011 socket (PCIe 5.0), while the Opteron 6386 SE uses G34 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Xeon E5-2665 | Opteron 6386 SE |
|---|---|---|
| Socket | LGA2011 | G34 |
| PCIe Generation | PCIe 5.0+150% | PCIe 2.0 |
| Max RAM Speed | DDR3-1600 | — |
| Max RAM Capacity | 384 GB | — |
| RAM Channels | 4 | — |
| ECC Support | ✅ | — |
| PCIe Lanes | 40 | — |
Advanced Features
Virtualization: VT-x, VT-d (Xeon E5-2665) / not specified (Opteron 6386 SE). Primary use case: Xeon E5-2665 targets Server.
| Feature | Xeon E5-2665 | Opteron 6386 SE |
|---|---|---|
| Integrated GPU | No | — |
| Unlocked | No | — |
| AVX-512 | Yes | — |
| Virtualization | VT-x, VT-d | — |
| Target Use | Server | — |
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