Intel Core 2 Quad Q8400 vs Intel Core i7-920
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CPU comparison with benchmarks
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| Intel Core 2 Quad Q8400 | Intel Core i7-920 | |
CPU comparisonIn this CPU comparison, we compare the Intel Core 2 Quad Q8400 and the Intel Core i7-920 and use benchmarks to check which processor is faster.
We compare the Intel Core 2 Quad Q8400 4 core processor released in Q2/2009 with the Intel Core i7-920 which has 4 CPU cores and was introduced in Q4/2008. |
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| Intel Core2 Quad (19) | Family | Intel Core i7 (298) |
| Intel Core 2 Quad Q8000/Q9000 (16) | CPU group | Intel Core i7 900 (7) |
| 2 | Generation | 1 |
| Yorkfield (Penryn) | Architecture | Bloomfield |
| Desktop / Server | Segment | Desktop / Server |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe Intel Core 2 Quad Q8400 is a 4 core processor with a clock frequency of 2.66 GHz. The processor can compute 4 threads at the same time. The Intel Core i7-920 clocks with 2.66 GHz (2.93 GHz), has 4 CPU cores and can calculate 8 threads in parallel. |
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| Intel Core 2 Quad Q8400 | Characteristic | Intel Core i7-920 |
| 4 | Cores | 4 |
| 4 | Threads | 8 |
| normal | Core architecture | normal |
| No | Hyperthreading | Yes |
| No | Overclocking ? | No |
| 2.66 GHz | Frequency | 2.66 GHz |
| -- | Turbo Frequency (1 Core) | 2.93 GHz |
| -- | Turbo Frequency (All Cores) | -- |
Memory & PCIeUp to 16 GB of memory in a maximum of 2 memory channels is supported by the Intel Core 2 Quad Q8400, while the Intel Core i7-920 supports a maximum of 24 GB of memory with a maximum memory bandwidth of 25.6 GB/s enabled. |
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| Intel Core 2 Quad Q8400 | Characteristic | Intel Core i7-920 |
| DDR3-1066, DDR2-800 | Memory | DDR3-1066 |
| 16 GB | Max. Memory | 24 GB |
| 2 (Dual Channel) | Memory channels | 3 |
| 17.1 GB/s | Max. Bandwidth | 25.6 GB/s |
| No | ECC | No |
| 4.00 MB | L2 Cache | 1.00 MB |
| -- | L3 Cache | 8.00 MB |
| -- | PCIe version | -- |
| -- | PCIe lanes | -- |
| -- | PCIe Bandwidth | -- |
Thermal ManagementThe Intel Core 2 Quad Q8400 has a TDP of 95 W. The TDP of the Intel Core i7-920 is 130 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
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| Intel Core 2 Quad Q8400 | Characteristic | Intel Core i7-920 |
| 95 W | TDP (PL1 / PBP) | 130 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| -- | Tjunction max. | -- |
Technical detailsThe Intel Core 2 Quad Q8400 has 4.00 MB cache and is manufactured in 45 nm. The cache of Intel Core i7-920 is at 9.00 MB. The processor is manufactured in 45 nm. |
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| Intel Core 2 Quad Q8400 | Characteristic | Intel Core i7-920 |
| 45 nm | Technology | 45 nm |
| Monolithic | Chip design | Monolithic |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| MMX, SSE2, SSE3, SSE4.1 | ISA extensions | SSE4.1, SSE4.2 |
| LGA 775 | Socket | LGA 1366 |
| VT-x, VT-d | Virtualization | VT-x, VT-x EPT |
| No | AES-NI | No |
| Windows 10, Linux | Operating systems | Windows 10, Linux |
| Q2/2009 | Release date | Q4/2008 |
| -- | Release price | 305 $ |
| show more data | show more data | |
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4C 8T @ 2.66 GHz (2.93 GHz) buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 3 CPU benchmarks
Geekbench 5, 64bit (Single-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz |
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Intel Core i7-920
4C 8T @ 2.93 GHz |
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Geekbench 5, 64bit (Multi-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz |
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Intel Core i7-920
4C 8T @ 2.66 GHz |
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Estimated results for PassMark CPU Mark
Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
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Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz |
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Intel Core i7-920
4C 8T @ 2.66 GHz |
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CPU-Z Benchmark 17 (Multi-Core)
The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
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Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz |
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Intel Core i7-920
4C 8T @ 2.66 GHz |
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Geekbench 6 (Single-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
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Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz |
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Intel Core i7-920
4C 8T @ 2.93 GHz |
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Geekbench 6 (Multi-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
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Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz |
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Intel Core i7-920
4C 8T @ 2.66 GHz |
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CPU-Z Benchmark 17 (Single-Core)
The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
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Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz |
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Intel Core i7-920
4C 8T @ 2.66 GHz |
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Devices using this processor |
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| Intel Core 2 Quad Q8400 | Intel Core i7-920 |
| Unknown | Unknown |
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