Athlon II X4 651K vs Xeon E3-1245
Primary details
Comparing Xeon E3-1245 and Athlon II X4 651K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 1475 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.87 | no data |
| Market segment | Server | Desktop processor |
| Architecture codename | Sandy Bridge (2011−2013) | Llano (2011−2012) |
| Release date | 3 April 2011 (13 years ago) | 14 November 2011 (12 years ago) |
| Launch price (MSRP) | $350 | no data |
| Current price | $333 (1x MSRP) | $110 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E3-1245 and Athlon II X4 651K 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 | 8 | 4 |
| Base clock speed | 3.3 GHz | 3 GHz |
| Boost clock speed | 3.7 GHz | 3 GHz |
| L1 cache | 64 KB (per core) | 128 KB (per core) |
| L2 cache | 256 KB (per core) | 1 MB (per core) |
| L3 cache | 8 MB (shared) | 0 KB |
| Chip lithography | 32 nm | 32 nm |
| Die size | 216 mm2 | 228 mm2 |
| Maximum core temperature | 73 °C | no data |
| Number of transistors | 1,160 million | 1,178 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Xeon E3-1245 and Athlon II X4 651K 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 | 1 |
| Socket | LGA1155 | FM1 |
| Power consumption (TDP) | 95 Watt | 100 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E3-1245 and Athlon II X4 651K. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX | no data |
| AES-NI | + | no data |
| AVX | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | no data |
| Flex Memory Access | + | no data |
| Demand Based Switching | + | no data |
| FDI | + | no data |
| Fast Memory Access | + | no data |
| Status | Discontinued | no data |
Security technologies
Xeon E3-1245 and Athlon II X4 651K technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| Identity Protection | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E3-1245 and Athlon II X4 651K are enumerated here.
| AMD-V | no data | + |
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E3-1245 and Athlon II X4 651K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | 32 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 21 GB/s | no data |
| ECC memory support | + | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD P3000 | no data |
| Quick Sync Video | + | no data |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.35 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Xeon E3-1245 and Athlon II X4 651K integrated GPUs.
| Number of displays supported | 2 | no data |
Peripherals
Specifications and connection of peripherals supported by Xeon E3-1245 and Athlon II X4 651K.
| PCIe version | 2.0 | no data |
| PCI Express lanes | 20 | no data |
Pros & cons summary
| Recency | 3 April 2011 | 14 November 2011 |
| Threads | 8 | 4 |
| Power consumption (TDP) | 95 Watt | 100 Watt |
We couldn't decide between Xeon E3-1245 and Athlon II X4 651K. We've got no test results to judge.
Be aware that Xeon E3-1245 is a server/workstation processor while Athlon II X4 651K is a desktop one.
Should you still have questions on choice between Xeon E3-1245 and Athlon II X4 651K, ask them in Comments section, and we shall answer.
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