Xeon E5-2649 V3 vs Opteron 6278
Aggregate performance score
Opteron 6278 outperforms Xeon E5-2649 V3 by a moderate 11% based on our aggregate benchmark results.
Primary details
Comparing Opteron 6278 and Xeon E5-2649 V3 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 866 | 945 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Server |
| Power efficiency | 7.11 | 7.03 |
| Architecture codename | Interlagos (2011−2012) | Haswell-EP (2014−2015) |
| Release date | 1 May 2012 (12 years ago) | 8 September 2014 (10 years ago) |
Detailed specifications
Opteron 6278 and Xeon E5-2649 V3 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) | 10 (Deca-Core) |
| Threads | 16 | 20 |
| Base clock speed | 2.4 GHz | 2.3 GHz |
| Boost clock speed | 3.3 GHz | 3 GHz |
| L1 cache | 768 KB | 64K (per core) |
| L2 cache | 16 MB | 256K (per core) |
| L3 cache | 8 MB (per die) | 25 MB (shared) |
| Chip lithography | 32 nm | 22 nm |
| Die size | 316 mm2 | 356 mm2 |
| Number of transistors | 2,400 million | 2,600 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Opteron 6278 and Xeon E5-2649 V3 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 | 2 |
| Socket | G34 | 2011-3 |
| Power consumption (TDP) | 115 Watt | 105 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Opteron 6278 and Xeon E5-2649 V3. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| FMA | + | - |
| AVX | + | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| TSX | - | + |
Security technologies
Opteron 6278 and Xeon E5-2649 V3 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Opteron 6278 and Xeon E5-2649 V3 are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Opteron 6278 and Xeon E5-2649 V3. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3, DDR4 2133 MHz Quad-channel |
Peripherals
Specifications and connection of peripherals supported by Opteron 6278 and Xeon E5-2649 V3.
| PCIe version | 2.0 | 3.0 |
| PCI Express lanes | no data | 40 |
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.
Pros & cons summary
| Performance score | 8.97 | 8.10 |
| Recency | 1 May 2012 | 8 September 2014 |
| Physical cores | 16 | 10 |
| Threads | 16 | 20 |
| Chip lithography | 32 nm | 22 nm |
| Power consumption (TDP) | 115 Watt | 105 Watt |
Opteron 6278 has a 10.7% higher aggregate performance score, and 60% more physical cores.
Xeon E5-2649 V3, on the other hand, has an age advantage of 2 years, 25% more threads, a 45.5% more advanced lithography process, and 9.5% lower power consumption.
The Opteron 6278 is our recommended choice as it beats the Xeon E5-2649 V3 in performance tests.
Should you still have questions on choice between Opteron 6278 and Xeon E5-2649 V3, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
