Pentium E6500K vs Xeon E3-1275 v3
Primary details
Comparing Xeon E3-1275 v3 and Pentium E6500K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1300 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.53 | no data |
| Market segment | Server | Desktop processor |
| Power efficiency | 5.11 | no data |
| Architecture codename | Haswell-WS (2013−2014) | Wolfdale (2008−2010) |
| Release date | 2 June 2013 (11 years ago) | 9 August 2009 (15 years ago) |
| Launch price (MSRP) | $531 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E3-1275 v3 and Pentium E6500K 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) | 2 (Dual-core) |
| Threads | 8 | 2 |
| Base clock speed | 3.5 GHz | 2.93 GHz |
| Boost clock speed | 3.9 GHz | 0.93 GHz |
| Bus rate | 5 GT/s | no data |
| L1 cache | 64 KB (per core) | 64 KB (per core) |
| L2 cache | 256 KB (per core) | 2 MB (shared) |
| L3 cache | 8192 KB (shared) | 0 KB |
| Chip lithography | 22 nm | 45 nm |
| Die size | 160 mm2 | 82 mm2 |
| Maximum core temperature | no data | 74 °C |
| Number of transistors | 1,400 million | 228 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | - | + |
| VID voltage range | no data | 0.85V – 1.3625V |
Compatibility
Information on Xeon E3-1275 v3 and Pentium E6500K 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 | FCLGA1150 | LGA775 |
| Power consumption (TDP) | 84 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E3-1275 v3 and Pentium E6500K. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | no data |
| AES-NI | + | - |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | - |
| TSX | + | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | + | no data |
| SIPP | + | - |
| Demand Based Switching | no data | - |
| FDI | + | no data |
| Fast Memory Access | + | no data |
Security technologies
Xeon E3-1275 v3 and Pentium E6500K technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
| Secure Key | + | no data |
| Identity Protection | + | - |
| OS Guard | + | no data |
| Anti-Theft | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E3-1275 v3 and Pentium E6500K are enumerated here.
| VT-d | + | - |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E3-1275 v3 and Pentium E6500K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3, DDR4 | DDR1, DDR2, DDR3 |
| Maximum memory size | 32 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 25.6 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD P4600 | On certain motherboards (Chipset feature) |
| Quick Sync Video | + | - |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.25 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Xeon E3-1275 v3 and Pentium E6500K integrated GPUs.
| Number of displays supported | 3 | no data |
Peripherals
Specifications and connection of peripherals supported by Xeon E3-1275 v3 and Pentium E6500K.
| PCIe version | 3.0 | 2.0 |
| PCI Express lanes | 16 | no data |
Pros & cons summary
| Recency | 2 June 2013 | 9 August 2009 |
| Physical cores | 4 | 2 |
| Threads | 8 | 2 |
| Chip lithography | 22 nm | 45 nm |
| Power consumption (TDP) | 84 Watt | 65 Watt |
Xeon E3-1275 v3 has an age advantage of 3 years, 100% more physical cores and 300% more threads, and a 104.5% more advanced lithography process.
Pentium E6500K, on the other hand, has 29.2% lower power consumption.
We couldn't decide between Xeon E3-1275 v3 and Pentium E6500K. We've got no test results to judge.
Be aware that Xeon E3-1275 v3 is a server/workstation processor while Pentium E6500K is a desktop one.
Should you still have questions on choice between Xeon E3-1275 v3 and Pentium E6500K, ask them in Comments section, and we shall answer.
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