Core i7-920 vs Core 2 Quad Q9400
Aggregate performance score
i7-920 outperforms Core 2 Quad Q9400 by a substantial 34% based on our aggregate benchmark results.
Primary details
Comparing Core 2 Quad Q9400 and Core i7-920 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2143 | 1915 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.51 | 1.22 |
| Market segment | Desktop processor | Desktop processor |
| Series | no data | Core i7 (Desktop) |
| Architecture codename | Yorkfield (2007−2009) | Bloomfield (2008−2010) |
| Release date | August 2008 (15 years ago) | November 2008 (15 years ago) |
| Launch price (MSRP) | no data | $340 |
| Current price | $73 | $68 (0.2x MSRP) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Core 2 Quad Q9400 has 188% better value for money than i7-920.
Detailed specifications
Core 2 Quad Q9400 and Core i7-920 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) | 4 (Quad-Core) |
| Threads | 4 | 8 |
| Base clock speed | 2.66 GHz | 2.66 GHz |
| Boost clock speed | 2.67 GHz | 2.93 GHz |
| Bus support | no data | 1333 MHz |
| L1 cache | 64K (per core) | 64 KB (per core) |
| L2 cache | 6 MB (shared) | 256 KB (per core) |
| L3 cache | 0 KB | 8 MB (shared) |
| Chip lithography | 45 nm | 45 nm |
| Die size | 2x 81 mm2 | 263 mm2 |
| Maximum core temperature | 71 °C | 68 °C |
| Maximum case temperature (TCase) | 71 °C | no data |
| Number of transistors | 456 million | 731 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
| VID voltage range | 0.85V-1.3625V | no data |
Compatibility
Information on Core 2 Quad Q9400 and Core i7-920 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 | 1 |
| Socket | LGA775 | FCLGA1366,PLGA1366 |
| Power consumption (TDP) | 95 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Quad Q9400 and Core i7-920. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.2 |
| AES-NI | - | - |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | 1.0 |
| Hyper-Threading Technology | - | + |
| Idle States | + | + |
| Thermal Monitoring | + | - |
| Demand Based Switching | - | - |
| PAE | no data | 36 Bit |
| FSB parity | - | no data |
| Status | Discontinued | Discontinued |
Security technologies
Core 2 Quad Q9400 and Core i7-920 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 i7-920 are enumerated here.
| VT-d | + | no data |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q9400 and Core i7-920. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR3 |
| Maximum memory size | no data | 24 GB |
| Max memory channels | no data | 3 |
| Maximum memory bandwidth | no data | 25.6 GB/s |
| ECC memory support | 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.
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.
Core i7-920 outperforms Core 2 Quad Q9400 by 34% based on our aggregate benchmark results.
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%
Core i7-920 outperforms Core 2 Quad Q9400 by 34% in Passmark.
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%
Core i7-920 outperforms Core 2 Quad Q9400 by 23% in GeekBench 5 Single-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.
Benchmark coverage: 42%
Core i7-920 outperforms Core 2 Quad Q9400 by 52% in GeekBench 5 Multi-Core.
3DMark Fire Strike Physics
Benchmark coverage: 4%
Core 2 Quad Q9400 outperforms Core i7-920 by 8% in 3DMark Fire Strike Physics.
Pros & cons summary
| Performance score | 1.37 | 1.83 |
| Threads | 4 | 8 |
| Power consumption (TDP) | 95 Watt | 130 Watt |
The Core i7-920 is our recommended choice as it beats the Core 2 Quad Q9400 in performance tests.
Should you still have questions on choice between Core 2 Quad Q9400 and Core i7-920, ask them in Comments section, and we shall answer.
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