Xeon X5647 vs i5-2500K
Aggregate performance score
Xeon X5647 outperforms Core i5-2500K by a small 8% based on our aggregate benchmark results.
Primary details
Comparing Core i5-2500K and Xeon X5647 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1718 | 1673 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.32 | 1.61 |
| Market segment | Desktop processor | Server |
| Series | Core i5 (Desktop) | no data |
| Power efficiency | 2.59 | 2.04 |
| Architecture codename | Sandy Bridge (2011−2013) | Westmere-EP (2010−2011) |
| Release date | 9 January 2011 (13 years ago) | 14 February 2011 (13 years ago) |
| Launch price (MSRP) | $216 | $175 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Xeon X5647 has 403% better value for money than i5-2500K.
Detailed specifications
Core i5-2500K and Xeon X5647 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 | 4 (Quad-Core) | 4 (Quad-Core) |
| Threads | 4 | 8 |
| Base clock speed | 3.3 GHz | 2.93 GHz |
| Boost clock speed | 3.7 GHz | 3.2 GHz |
| Bus rate | 5 GT/s | no data |
| L1 cache | 64 KB (per core) | 64 KB (per core) |
| L2 cache | 256K (per core) | 256 KB (per core) |
| L3 cache | 6 MB (shared) | 12 MB (shared) |
| Chip lithography | 32 nm | 32 nm |
| Die size | 216 mm2 | 239 mm2 |
| Maximum core temperature | 73 °C | 80 °C |
| Number of transistors | 1,160 million | 1,170 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Core i5-2500K and Xeon X5647 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 | 1 | 2 |
| Socket | LGA1155 | FCLGA1366,LGA1366 |
| Power consumption (TDP) | 95 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i5-2500K and Xeon X5647. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX | Intel® SSE4.2 |
| AES-NI | + | + |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | 1.0 |
| Hyper-Threading Technology | - | + |
| Idle States | + | + |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Demand Based Switching | no data | + |
| PAE | no data | 40 Bit |
| FDI | + | no data |
| Fast Memory Access | + | no data |
Security technologies
Core i5-2500K and Xeon X5647 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | + |
| EDB | + | + |
| Identity Protection | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i5-2500K and Xeon X5647 are enumerated here.
| VT-d | - | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i5-2500K and Xeon X5647. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | 32 GB | 288 GB |
| Max memory channels | 2 | 3 |
| Maximum memory bandwidth | 21 GB/s | 25.6 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 3000 | no data |
| Quick Sync Video | + | - |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.1 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i5-2500K and Xeon X5647 integrated GPUs.
| Number of displays supported | 2 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i5-2500K and Xeon X5647.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | 16 | 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.
Pros & cons summary
| Performance score | 2.65 | 2.85 |
| Recency | 9 January 2011 | 14 February 2011 |
| Threads | 4 | 8 |
| Power consumption (TDP) | 95 Watt | 130 Watt |
i5-2500K has 36.8% lower power consumption.
Xeon X5647, on the other hand, has a 7.5% higher aggregate performance score, an age advantage of 1 month, and 100% more threads.
Given the minimal performance differences, no clear winner can be declared between Core i5-2500K and Xeon X5647.
Note that Core i5-2500K is a desktop processor while Xeon X5647 is a server/workstation one.
Should you still have questions on choice between Core i5-2500K and Xeon X5647, ask them in Comments section, and we shall answer.
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