Opteron 6276 vs Xeon E5-2640
Opteron 6276
Xeon E5-2640
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 Opteron 6276 is positioned at rank 53 and the Xeon E5-2640 is on rank 946, so the Opteron 6276 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Opteron 6276
Performance Per Dollar Xeon E5-2640
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Opteron 6276 | Xeon E5-2640 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($397) | ⚠️ Higher cost ($885) |
| Longevity | 🛑 Legacy (Interlagos (2011−2012) / 32 nm) | 🛑 Legacy (Sandy Bridge-EP (2012) / 32 nm) |
💎 Value Proposition
| Insight | Opteron 6276 | Xeon E5-2640 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+124%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($397) | ⚠️ Higher cost ($885) |
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 Opteron 6276 and Xeon E5-2640
Opteron 6276
The Opteron 6276 is manufactured by AMD. It was released in 14 November 2011 (14 years ago). It is based on the Interlagos (2011−2012) architecture. It features 16 cores and 16 threads. Base frequency is 2.3 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): 115 Watt. Memory support: DDR3. Passmark benchmark score: 6,348 points. Launch price was $119.
Xeon E5-2640
The Xeon E5-2640 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 6 cores and 12 threads. Base frequency is 2.5 GHz, with boost up to 3 GHz. L3 cache: 15360 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: 6,305 points. Launch price was $162.
Processing Power
The Opteron 6276 packs 16 cores / 16 threads, while the Xeon E5-2640 offers 6 cores / 12 threads — the Opteron 6276 has 10 more cores. Boost clocks reach 3.2 GHz on the Opteron 6276 versus 3 GHz on the Xeon E5-2640 — a 6.5% clock advantage for the Opteron 6276 (base: 2.3 GHz vs 2.5 GHz). The Opteron 6276 uses the Interlagos (2011−2012) architecture (32 nm), while the Xeon E5-2640 uses Sandy Bridge-EP (2012) (32 nm). In PassMark, the Opteron 6276 scores 6,348 against the Xeon E5-2640's 6,305 — a 0.7% lead for the Opteron 6276. L3 cache: 8 MB (total) on the Opteron 6276 vs 15360 kB (total) on the Xeon E5-2640.
| Feature | Opteron 6276 | Xeon E5-2640 |
|---|---|---|
| Cores / Threads | 16 / 16+167% | 6 / 12 |
| Boost Clock | 3.2 GHz+7% | 3 GHz |
| Base Clock | 2.3 GHz | 2.5 GHz+9% |
| L3 Cache | 8 MB (total) | 15360 kB (total)+88% |
| L2 Cache | 2 MB (per module)+700% | 256 kB (per core) |
| Process | 32 nm | 32 nm |
| Architecture | Interlagos (2011−2012) | Sandy Bridge-EP (2012) |
| PassMark | 6,348 | 6,305 |
Memory & Platform
The Opteron 6276 uses the G34 socket (PCIe 2.0), while the Xeon E5-2640 uses LGA2011 (PCIe 5.0) — making them incompatible on the same motherboard.
| Feature | Opteron 6276 | Xeon E5-2640 |
|---|---|---|
| Socket | G34 | LGA2011 |
| PCIe Generation | PCIe 2.0 | PCIe 5.0+150% |
| Max RAM Speed | — | DDR3-1333 |
| Max RAM Capacity | — | 384 GB |
| RAM Channels | — | 4 |
| ECC Support | — | ✅ |
| PCIe Lanes | — | 40 |
Advanced Features
Virtualization: not specified (Opteron 6276) / VT-x, VT-d (Xeon E5-2640). Primary use case: Xeon E5-2640 targets Server.
| Feature | Opteron 6276 | Xeon E5-2640 |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d |
| Target Use | — | Server |
Value Analysis
The Opteron 6276 launched at $788 MSRP, while the Xeon E5-2640 debuted at $885.
| Feature | Opteron 6276 | Xeon E5-2640 |
|---|---|---|
| MSRP | $788-11% | $885 |
| Avg Price (30d) | $397 | — |
| Release Date | 2011 | 2012 |
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