Core Duo U2400 vs Core 2 Quad Q9400
Primary details
Comparing Core 2 Quad Q9400 and Core Duo U2400 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2237 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Core Duo |
| Power efficiency | 1.33 | no data |
| Architecture codename | Yorkfield (2007−2009) | Yonah (2005−2006) |
| Release date | August 2008 (16 years ago) | no data (2024 years ago) |
Detailed specifications
Core 2 Quad Q9400 and Core Duo U2400 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 | 4 | 2 |
| Base clock speed | 2.66 GHz | 1.06 GHz |
| Boost clock speed | 2.67 GHz | 1.06 GHz |
| Bus rate | 1333 MHz | 533 MHz |
| L1 cache | 64K (per core) | no data |
| L2 cache | 6 MB (shared) | no data |
| L3 cache | 0 KB | 2 MB L2 KB |
| Chip lithography | 45 nm | 65 nm |
| Die size | 2x 81 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 71 °C | no data |
| Number of transistors | 456 million | no data |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
| VID voltage range | 0.85V-1.3625V | 0.8-1.1V |
Compatibility
Information on Core 2 Quad Q9400 and Core Duo U2400 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 | PBGA479 |
| Power consumption (TDP) | 95 Watt | 9 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Quad Q9400 and Core Duo U2400. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| Idle States | + | - |
| Thermal Monitoring | + | - |
| Demand Based Switching | - | - |
| PAE | no data | 32 Bit |
| FSB parity | - | - |
Security technologies
Core 2 Quad Q9400 and Core Duo U2400 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Quad Q9400 and Core Duo U2400 are enumerated here.
| VT-d | + | no data |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q9400 and Core Duo U2400. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | no data |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Physical cores | 4 | 2 |
| Threads | 4 | 2 |
| Chip lithography | 45 nm | 65 nm |
| Power consumption (TDP) | 95 Watt | 9 Watt |
Core 2 Quad Q9400 has 100% more physical cores and 100% more threads, and a 44.4% more advanced lithography process.
Duo U2400, on the other hand, has 955.6% lower power consumption.
We couldn't decide between Core 2 Quad Q9400 and Core Duo U2400. We've got no test results to judge.
Note that Core 2 Quad Q9400 is a desktop processor while Core Duo U2400 is a notebook one.
Should you still have questions on choice between Core 2 Quad Q9400 and Core Duo U2400, ask them in Comments section, and we shall answer.
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