Xeon E5-2450 v2 vs Athlon II X4 651K
Primary details
Comparing Athlon II X4 651K and Xeon E5-2450 v2 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 1126 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Server |
| Power efficiency | no data | 5.67 |
| Architecture codename | Llano (2011−2012) | Ivy Bridge-EN (2013−2014) |
| Release date | 14 November 2011 (12 years ago) | 1 September 2013 (11 years ago) |
Detailed specifications
Athlon II X4 651K and Xeon E5-2450 v2 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) | 8 (Octa-Core) |
| Threads | 4 | 16 |
| Base clock speed | 3 GHz | 2.5 GHz |
| Boost clock speed | 3 GHz | 3.3 GHz |
| Bus rate | no data | 8 GT/s |
| L1 cache | 128 KB (per core) | 64 KB (per core) |
| L2 cache | 1 MB (per core) | 256 KB (per core) |
| L3 cache | 0 KB | 20 MB (shared) |
| Chip lithography | 32 nm | 22 nm |
| Die size | 228 mm2 | 160 mm2 |
| Maximum core temperature | no data | 80 °C |
| Number of transistors | 1,178 million | 1,400 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Athlon II X4 651K and Xeon E5-2450 v2 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 | FM1 | FCLGA1356 |
| Power consumption (TDP) | 100 Watt | 95 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon II X4 651K and Xeon E5-2450 v2. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® AVX |
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | - |
| Demand Based Switching | no data | + |
| PAE | no data | 46 Bit |
Security technologies
Athlon II X4 651K and Xeon E5-2450 v2 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| Secure Key | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon II X4 651K and Xeon E5-2450 v2 are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon II X4 651K and Xeon E5-2450 v2. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | no data | 384 GB |
| Max memory channels | no data | 3 |
| Maximum memory bandwidth | no data | 38.4 GB/s |
| ECC memory support | - | + |
Peripherals
Specifications and connection of peripherals supported by Athlon II X4 651K and Xeon E5-2450 v2.
| PCIe version | no data | 3.0 |
| PCI Express lanes | no data | 24 |
Pros & cons summary
| Recency | 14 November 2011 | 1 September 2013 |
| Physical cores | 4 | 8 |
| Threads | 4 | 16 |
| Chip lithography | 32 nm | 22 nm |
| Power consumption (TDP) | 100 Watt | 95 Watt |
Xeon E5-2450 v2 has an age advantage of 1 year, 100% more physical cores and 300% more threads, a 45.5% more advanced lithography process, and 5.3% lower power consumption.
We couldn't decide between Athlon II X4 651K and Xeon E5-2450 v2. We've got no test results to judge.
Note that Athlon II X4 651K is a desktop processor while Xeon E5-2450 v2 is a server/workstation one.
Should you still have questions on choice between Athlon II X4 651K and Xeon E5-2450 v2, ask them in Comments section, and we shall answer.
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