Core 2 Quad Q9400: specs and benchmarks
Aggregate performance score
Core 2 Quad Q9400 provides poor benchmark performance at 1.34% of a leader's which is a 96-core EPYC 9655P.
Summary
Intel started Core 2 Quad Q9400 sales on August 2008. This is an Yorkfield architecture desktop processor primarily aimed at office systems. It has 4 cores and 4 threads, and is based on 45 nm manufacturing technology, with a maximum frequency of 2666 MHz and a locked multiplier.
Compatibility-wise, this is LGA775 processor with a TDP of 95 Watt and a maximum temperature of 71 °C. It supports DDR1, DDR2, DDR3 memory.
Primary details
Core 2 Quad Q9400 processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | 2244 | |
| Place by popularity | not in top-100 | |
| Market segment | Desktop processor | |
| Power efficiency | 1.33 | of 100.00 (Core Ultra 7 164U) |
| Architecture codename | Yorkfield (2007−2009) | |
| Release date | August 2008 (16 years ago) |
Detailed specifications
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
| Physical cores | 4 (Quad-Core) | |
| Threads | 4 | |
| Base clock speed | 2.66 GHz | of 4.7 GHz (FX-9590) |
| Boost clock speed | 2.67 GHz | of 6.2 GHz (Core i9-14900KS) |
| Bus rate | 1333 MHz | |
| L1 cache | 64K (per core) | of 80 KB (EPYC 9965) |
| L2 cache | 6 MB (shared) | of 2 MB (Xeon 6980P) |
| L3 cache | 0 KB | of 1152 MB (EPYC 9684X) |
| Chip lithography | 45 nm | of 3 nm (Apple M3 Max 16-Core) |
| Die size | 2x 81 mm2 | |
| Maximum case temperature (TCase) | 71 °C | of 105 °C (Core i7-5950HQ) |
| Number of transistors | 456 million | of 135,240 million (EPYC 9684X) |
| 64 bit support | + | |
| Windows 11 compatibility | - | |
| VID voltage range | 0.85V-1.3625V |
Compatibility
Information on Core 2 Quad Q9400 compatibility with other computer components and devices: 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 | of 8 (Opteron 842) |
| Socket | LGA775 | |
| Power consumption (TDP) | 95 Watt | of 3100 ‑ 4500 (Ryzen 7 7435H) |
Technologies and extensions
Technological capabilities and additional instructions supported by Core 2 Quad Q9400. 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 | - | |
| FSB parity | - |
Security technologies
Processor technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | |
| EDB | + |
Virtualization technologies
Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.
| VT-d | + | |
| VT-x | + |
Memory specs
Types, maximum amount and channel number of RAM supported by Core 2 Quad Q9400's memory controller. Depending on the motherboard, higher memory frequency may be supported.
| Supported memory types | DDR1, DDR2, DDR3 |
Benchmark performance
Single-core and multi-core benchmark results of Core 2 Quad Q9400. Overall benchmark performance is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
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.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
3DMark Fire Strike Physics
Send your test results of Core 2 Quad Q9400.
AMD equivalent
According to our data, the closest AMD alternative to Core 2 Quad Q9400 is Athlon II X4 631, which is nearly equal in speed and lower by 3 positions in our ranking.
Here are some closest AMD rivals to Core 2 Quad Q9400:
Similar processors
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
Recommended GPUs
People consider these graphics cards to be good for Core 2 Quad Q9400, according to our PC configuration statistics.
These are the fastest graphics cards for Core 2 Quad Q9400 in our user configuration statistics. There is a total of 6135 configurations using Core 2 Quad Q9400 in our database.
