Xeon D-1846 vs Core 2 Quad Q8400
Primary details
Comparing Core 2 Quad Q8400 and Xeon D-1846 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2281 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Server |
| Power efficiency | 1.29 | no data |
| Architecture codename | Yorkfield (2007−2009) | no data |
| Release date | 19 April 2009 (15 years ago) | 1 October 2023 (1 year ago) |
Detailed specifications
Core 2 Quad Q8400 and Xeon D-1846 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) | 10 (Deca-Core) |
| Threads | 4 | 20 |
| Base clock speed | 2.66 GHz | 2 GHz |
| Boost clock speed | 0.67 GHz | 3.1 GHz |
| Bus rate | 1333 MHz | no data |
| L1 cache | 64 KB (per core) | no data |
| L2 cache | 4 MB (shared) | no data |
| L3 cache | 0 KB | 15360 KB |
| Chip lithography | 45 nm | no data |
| Die size | 2x 82 mm2 | no data |
| Maximum case temperature (TCase) | 71 °C | no data |
| Number of transistors | 456 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| VID voltage range | 0.85V-1.3625V | no data |
Compatibility
Information on Core 2 Quad Q8400 and Xeon D-1846 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 | no data |
| Socket | FCLGA775,LGA775 | FCBGA2227 |
| Power consumption (TDP) | 95 Watt | 55 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Xeon D-1846. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® AVX-512 |
| AES-NI | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| QuickAssist | no data | - |
| Turbo Boost Technology | - | 2.0 |
| Hyper-Threading Technology | - | + |
| Idle States | + | no data |
| Thermal Monitoring | + | + |
| Demand Based Switching | - | no data |
| FSB parity | - | no data |
| Deep Learning Boost | - | + |
Security technologies
Core 2 Quad Q8400 and Xeon D-1846 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
| SGX | no data | Yes with Intel® SPS |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Quad Q8400 and Xeon D-1846 are enumerated here.
| VT-d | no data | + |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Xeon D-1846. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR4 |
| Maximum memory size | no data | 256 GB |
| Max memory channels | no data | 2 |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | no data |
Peripherals
Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Xeon D-1846.
| PCIe version | 2.0 | 4.0 |
| PCI Express lanes | no data | 16 |
| USB revision | no data | 3.0 |
| Max number of SATA 6 Gb/s Ports | no data | 24 |
| Number of USB ports | no data | 4 |
| Integrated LAN | no data | - |
Pros & cons summary
| Recency | 19 April 2009 | 1 October 2023 |
| Physical cores | 4 | 10 |
| Threads | 4 | 20 |
| Power consumption (TDP) | 95 Watt | 55 Watt |
Xeon D-1846 has an age advantage of 14 years, 150% more physical cores and 400% more threads, and 72.7% lower power consumption.
We couldn't decide between Core 2 Quad Q8400 and Xeon D-1846. We've got no test results to judge.
Note that Core 2 Quad Q8400 is a desktop processor while Xeon D-1846 is a server/workstation one.
Should you still have questions on choice between Core 2 Quad Q8400 and Xeon D-1846, ask them in Comments section, and we shall answer.
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