Xeon D-2876NT vs Core 2 Quad Q9400
Primary details
Comparing Core 2 Quad Q9400 and Xeon D-2876NT processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2241 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Server |
| Power efficiency | 1.34 | no data |
| Architecture codename | Yorkfield (2007−2009) | no data |
| Release date | August 2008 (16 years ago) | 1 October 2023 (1 year ago) |
Detailed specifications
Core 2 Quad Q9400 and Xeon D-2876NT 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) | 16 (Hexadeca-Core) |
| Threads | 4 | 32 |
| Base clock speed | 2.66 GHz | 2 GHz |
| Boost clock speed | 2.67 GHz | 3.1 GHz |
| Bus rate | 1333 MHz | no data |
| L1 cache | 64K (per core) | no data |
| L2 cache | 6 MB (shared) | no data |
| L3 cache | 0 KB | 20 MB |
| Chip lithography | 45 nm | no data |
| Die size | 2x 81 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 Q9400 and Xeon D-2876NT 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 | LGA775 | FCBGA2579 |
| Power consumption (TDP) | 95 Watt | 100 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Quad Q9400 and Xeon D-2876NT. 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 Q9400 and Xeon D-2876NT 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 Q9400 and Xeon D-2876NT are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q9400 and Xeon D-2876NT. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR4 |
| Maximum memory size | no data | 1 TB |
| Max memory channels | no data | 4 |
| ECC memory support | - | + |
Peripherals
Specifications and connection of peripherals supported by Core 2 Quad Q9400 and Xeon D-2876NT.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 32 |
| 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
| Physical cores | 4 | 16 |
| Threads | 4 | 32 |
| Power consumption (TDP) | 95 Watt | 100 Watt |
Core 2 Quad Q9400 has 5.3% lower power consumption.
Xeon D-2876NT, on the other hand, has 300% more physical cores and 700% more threads.
We couldn't decide between Core 2 Quad Q9400 and Xeon D-2876NT. We've got no test results to judge.
Note that Core 2 Quad Q9400 is a desktop processor while Xeon D-2876NT is a server/workstation one.
Should you still have questions on choice between Core 2 Quad Q9400 and Xeon D-2876NT, ask them in Comments section, and we shall answer.
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