Core i5-520E vs Core 2 Quad Q8400
Primary details
Comparing Core 2 Quad Q8400 and Core i5-520E processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2268 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Core i5 |
| Power efficiency | 1.30 | no data |
| Architecture codename | Yorkfield (2007−2009) | Westmere (2010−2011) |
| Release date | 19 April 2009 (15 years ago) | 7 January 2010 (14 years ago) |
| Launch price (MSRP) | no data | $210 |
Detailed specifications
Core 2 Quad Q8400 and Core i5-520E 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 | 4 |
| Base clock speed | 2.66 GHz | no data |
| Boost clock speed | 0.67 GHz | 2.4 GHz |
| Bus type | no data | DMI 1.0 |
| Bus rate | 1333 MHz | 1 × 2.5 GT/s |
| Multiplier | no data | 18 |
| L1 cache | 64 KB (per core) | 128 KB |
| L2 cache | 4 MB (shared) | 512 KB |
| L3 cache | 0 KB | 3 MB |
| Chip lithography | 45 nm | 32 nm |
| Die size | 2x 82 mm2 | 81 mm2 |
| Maximum case temperature (TCase) | 71 °C | no data |
| Number of transistors | 456 million | 382 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | 0.85V-1.3625V | no data |
Compatibility
Information on Core 2 Quad Q8400 and Core i5-520E 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 (Uniprocessor) |
| Socket | FCLGA775,LGA775 | no data |
| Power consumption (TDP) | 95 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Core i5-520E. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| FMA | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | no data |
| Hyper-Threading Technology | - | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Demand Based Switching | - | no data |
| FSB parity | - | no data |
Security technologies
Core 2 Quad Q8400 and Core i5-520E technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | + |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Quad Q8400 and Core i5-520E are enumerated here.
| VT-d | no data | + |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Core i5-520E. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR3-1066 |
| Maximum memory size | no data | 8 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 17.051 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | Intel HD Graphics (Ironlake) |
Peripherals
Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Core i5-520E.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | no data | 16 |
Pros & cons summary
| Recency | 19 April 2009 | 7 January 2010 |
| Physical cores | 4 | 2 |
| Chip lithography | 45 nm | 32 nm |
| Power consumption (TDP) | 95 Watt | 35 Watt |
Core 2 Quad Q8400 has 100% more physical cores.
i5-520E, on the other hand, has an age advantage of 8 months, a 40.6% more advanced lithography process, and 171.4% lower power consumption.
We couldn't decide between Core 2 Quad Q8400 and Core i5-520E. We've got no test results to judge.
Note that Core 2 Quad Q8400 is a desktop processor while Core i5-520E is a notebook one.
Should you still have questions on choice between Core 2 Quad Q8400 and Core i5-520E, ask them in Comments section, and we shall answer.
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