Xeon E5440 vs Opteron 6276
Aggregate performance score
Opteron 6276 outperforms Xeon E5440 by a whopping 168% based on our aggregate benchmark results.
Primary details
Comparing Opteron 6276 and Xeon E5440 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1414 | 2143 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 5.09 | no data |
| Market segment | Server | Server |
| Power efficiency | 3.29 | 1.76 |
| Architecture codename | Interlagos (2011−2012) | no data |
| Release date | 14 November 2011 (13 years ago) | 1 January 2008 (16 years ago) |
| Launch price (MSRP) | $119 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Opteron 6276 and Xeon E5440 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 16 (Hexadeca-Core) | no data |
| Threads | 16 | no data |
| Base clock speed | 2.3 GHz | 2.83 GHz |
| Boost clock speed | 3.2 GHz | no data |
| L1 cache | 768 KB | no data |
| L2 cache | 16 MB | no data |
| L3 cache | 8 MB (per die) | 12 MB L2 Cache |
| Chip lithography | 32 nm | 45 nm |
| Die size | 316 mm2 | no data |
| Maximum core temperature | no data | 67 °C |
| Number of transistors | 2,400 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | no data | 0.85V-1.35V |
Compatibility
Information on Opteron 6276 and Xeon E5440 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 4 | no data |
| Socket | G34 | LGA771 |
| Power consumption (TDP) | 115 Watt | 80 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Opteron 6276 and Xeon E5440. You'll probably need this information if you require some particular technology.
| AES-NI | + | - |
| FMA | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | - |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Demand Based Switching | no data | + |
| FSB parity | no data | + |
Security technologies
Opteron 6276 and Xeon E5440 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Opteron 6276 and Xeon E5440 are enumerated here.
| AMD-V | + | - |
| VT-x | no data | + |
| EPT | no data | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Opteron 6276 and Xeon E5440. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
Peripherals
Specifications and connection of peripherals supported by Opteron 6276 and Xeon E5440.
| PCIe version | 2.0 | no data |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Pros & cons summary
| Performance score | 4.00 | 1.49 |
| Recency | 14 November 2011 | 1 January 2008 |
| Chip lithography | 32 nm | 45 nm |
| Power consumption (TDP) | 115 Watt | 80 Watt |
Opteron 6276 has a 168.5% higher aggregate performance score, an age advantage of 3 years, and a 40.6% more advanced lithography process.
Xeon E5440, on the other hand, has 43.8% lower power consumption.
The Opteron 6276 is our recommended choice as it beats the Xeon E5440 in performance tests.
Should you still have questions on choice between Opteron 6276 and Xeon E5440, ask them in Comments section, and we shall answer.
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