Xeon E5-2650 vs Opteron 6281
Xeon E5-2650
Opteron 6281
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 E5-2650 is positioned at rank 406 and the Opteron 6281 is on rank 44, so the Opteron 6281 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon E5-2650
Performance Per Dollar Opteron 6281
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon E5-2650 | Opteron 6281 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($419) |
| Longevity | 🛑 Legacy (Sandy Bridge-EP (2012) / 32 nm) | 🛑 Legacy (Interlagos (2011−2012) / 32 nm) |
💎 Value Proposition
| Insight | Xeon E5-2650 | Opteron 6281 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($419) |
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 E5-2650 and Opteron 6281
Xeon E5-2650
The Xeon E5-2650 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 GHz, with boost up to 2.8 GHz. L3 cache: 20480 kB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA2011. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 7,349 points. Launch price was $91.
Opteron 6281
The Opteron 6281 is manufactured by AMD. It was released in 1 May 2012 (13 years ago). It is based on the Interlagos (2011−2012) architecture. It features 16 cores and 16 threads. Base frequency is 2.5 GHz, with boost up to 3.2 GHz. L3 cache: 8 MB (total). L2 cache: 2 MB (per module). Built on 32 nm process technology. Socket: G34. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 7,279 points. Launch price was $988.
Processing Power
The Xeon E5-2650 packs 8 cores / 16 threads, while the Opteron 6281 offers 16 cores / 16 threads — the Opteron 6281 has 8 more cores. Boost clocks reach 2.8 GHz on the Xeon E5-2650 versus 3.2 GHz on the Opteron 6281 — a 13.3% clock advantage for the Opteron 6281 (base: 2 GHz vs 2.5 GHz). The Xeon E5-2650 uses the Sandy Bridge-EP (2012) architecture (32 nm), while the Opteron 6281 uses Interlagos (2011−2012) (32 nm). In PassMark, the Xeon E5-2650 scores 7,349 against the Opteron 6281's 7,279 — a 1% lead for the Xeon E5-2650. L3 cache: 20480 kB (total) on the Xeon E5-2650 vs 8 MB (total) on the Opteron 6281.
| Feature | Xeon E5-2650 | Opteron 6281 |
|---|---|---|
| Cores / Threads | 8 / 16 | 16 / 16+100% |
| Boost Clock | 2.8 GHz | 3.2 GHz+14% |
| Base Clock | 2 GHz | 2.5 GHz+25% |
| L3 Cache | 20480 kB (total)+150% | 8 MB (total) |
| L2 Cache | 256 kB (per core) | 2 MB (per module)+700% |
| Process | 32 nm | 32 nm |
| Architecture | Sandy Bridge-EP (2012) | Interlagos (2011−2012) |
| PassMark | 7,349 | 7,279 |
Memory & Platform
The Xeon E5-2650 uses the LGA2011 socket (PCIe 5.0), while the Opteron 6281 uses G34 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Xeon E5-2650 | Opteron 6281 |
|---|---|---|
| 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 E5-2650) / not specified (Opteron 6281). Primary use case: Xeon E5-2650 targets Server.
| Feature | Xeon E5-2650 | Opteron 6281 |
|---|---|---|
| Integrated GPU | No | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | VT-x, VT-d | — |
| Target Use | Server | — |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Xeon E5-2650 and Opteron 6281
