Core 2 Quad Q8400: specs and benchmarks
Aggregated performance score
Core 2 Quad Q8400 provides poor benchmark performance at 1.34% of a leader's which is a 96-core Ryzen Threadripper PRO 7995WX.
Summary
Intel started Core 2 Quad Q8400 sales on April 2009. 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 FCLGA775,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 Q8400 processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in performance ranking | 2138 | |
| Place by popularity | not in top-100 | |
| Cost-effectiveness evaluation | 2.73 | |
| Market segment | Desktop processor | |
| Architecture codename | Yorkfield (2007−2009) | |
| Release date | April 2009 (15 years ago) | |
| Current price | $47 | of 15701 (Xeon Platinum 8276L) |
Cost-effectiveness evaluation
Performance per price, higher is better.
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 (FX-9590) |
| Boost clock speed | 2.67 GHz | of 6.2 (Core i9-14900KS) |
| L1 cache | 64K (per core) | of 7475.2 (Apple M2 Pro 10-Core) |
| L2 cache | 4 MB (shared) | of 96 (Ryzen Threadripper PRO 7995WX) |
| L3 cache | 0 KB | of 786432 (EPYC 7373X) |
| Chip lithography | 45 nm | of 3 (Apple M3 Max 16-Core) |
| Die size | 2x 81 mm2 | |
| Maximum core temperature | 71 °C | of 110 (Atom x7-E3950) |
| Maximum case temperature (TCase) | 71 °C | of 105 (Core i7-5950HQ) |
| Number of transistors | 456 million | of 92000 (Apple M3 Max 16-Core) |
| 64 bit support | + | |
| Windows 11 compatibility | - | |
| Unlocked multiplier | No | |
| VID voltage range | 0.85V-1.3625V |
Compatibility
Information on Core 2 Quad Q8400 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 | FCLGA775,LGA775 | |
| Power consumption (TDP) | 95 Watt | of 400 (Xeon Platinum 9282) |
Technologies and extensions
Technological capabilities and additional instructions supported by Core 2 Quad Q8400. You'll probably need this information if you require some particular technology.
| AES-NI | - | |
| Enhanced SpeedStep (EIST) | + | |
| Turbo Boost Technology | - | |
| Hyper-Threading Technology | - | |
| Idle States | + | |
| Thermal Monitoring | + | |
| Demand Based Switching | - | |
| FSB parity | - | |
| Status | Discontinued |
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-x | + |
Memory specs
Types, maximum amount and channel number of RAM supported by Core 2 Quad Q8400'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 Q8400. 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.
Benchmark coverage: 68%
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.
Benchmark coverage: 42%
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.
Benchmark coverage: 42%
3DMark Fire Strike Physics
Benchmark coverage: 4%
Send your test results of Core 2 Quad Q8400.
AMD equivalent
According to our data, the closest AMD alternative to Core 2 Quad Q8400 is Phenom II X4 830, which is nearly equal in speed and higher by 1 position in our ranking.
Here are some closest AMD rivals to Core 2 Quad Q8400:
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 Q8400, according to our PC configuration statistics.
These are the fastest graphics cards for Core 2 Quad Q8400 in our user configuration statistics. There is a total of 7787 configurations using Core 2 Quad Q8400 in our database.
