Pentium D 945 vs Xeon E3-1245 v2
Primary details
Comparing Xeon E3-1245 v2 and Pentium D 945 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1415 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.32 | no data |
| Market segment | Server | Desktop processor |
| Power efficiency | 4.88 | no data |
| Architecture codename | Ivy Bridge (2012−2013) | Presler (2005−2007) |
| Release date | 14 May 2012 (12 years ago) | 23 July 2006 (18 years ago) |
| Launch price (MSRP) | $462 | $163 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E3-1245 v2 and Pentium D 945 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 | 3.4 GHz | 3.4 GHz |
| Boost clock speed | 3.8 GHz | 3.4 GHz |
| Bus rate | 5 GT/s | no data |
| L1 cache | 64 KB (per core) | 16 KB (per core) |
| L2 cache | 256 KB (per core) | 2 MB (per die) |
| L3 cache | 8 MB (shared) | 0 KB |
| Chip lithography | 22 nm | 65 nm |
| Die size | 160 mm2 | 2x 81 mm2 |
| Maximum case temperature (TCase) | no data | 63 °C |
| Number of transistors | 1,400 million | 376 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | no data | 1.2V-1.3375V |
Compatibility
Information on Xeon E3-1245 v2 and Pentium D 945 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 | FCLGA1155 | LGA775,PLGA775 |
| Power consumption (TDP) | 77 Watt | 95 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E3-1245 v2 and Pentium D 945. 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 | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | - |
| Idle States | + | + |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Demand Based Switching | + | - |
| PAE | no data | 32 Bit |
| FDI | + | no data |
| Fast Memory Access | + | no data |
| FSB parity | no data | - |
Security technologies
Xeon E3-1245 v2 and Pentium D 945 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
| Identity Protection | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E3-1245 v2 and Pentium D 945 are enumerated here.
| VT-d | + | - |
| VT-x | + | - |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E3-1245 v2 and Pentium D 945. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR1, DDR2, DDR3 |
| Maximum memory size | 32.77 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 P4000 | 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 E3-1245 v2 and Pentium D 945 integrated GPUs.
| Number of displays supported | 3 | no data |
Peripherals
Specifications and connection of peripherals supported by Xeon E3-1245 v2 and Pentium D 945.
| PCIe version | 3.0 | no data |
Pros & cons summary
| Recency | 14 May 2012 | 23 July 2006 |
| Physical cores | 4 | 2 |
| Threads | 8 | 2 |
| Chip lithography | 22 nm | 65 nm |
| Power consumption (TDP) | 77 Watt | 95 Watt |
Xeon E3-1245 v2 has an age advantage of 5 years, 100% more physical cores and 300% more threads, a 195.5% more advanced lithography process, and 23.4% lower power consumption.
We couldn't decide between Xeon E3-1245 v2 and Pentium D 945. We've got no test results to judge.
Be aware that Xeon E3-1245 v2 is a server/workstation processor while Pentium D 945 is a desktop one.
Should you still have questions on choice between Xeon E3-1245 v2 and Pentium D 945, ask them in Comments section, and we shall answer.
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