Core i5-520UM vs Core 2 Duo E6400
Aggregate performance score
Core i5-520UM outperforms Core 2 Duo E6400 by a moderate 16% based on our aggregate benchmark results.
Primary details
Comparing Core 2 Duo E6400 and Core i5-520UM processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2882 | 2809 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Core i5 |
| Power efficiency | 0.72 | 2.99 |
| Architecture codename | Conroe (2006−2007) | Arrandale (2010−2011) |
| Release date | July 2006 (18 years ago) | 7 January 2010 (14 years ago) |
| Launch price (MSRP) | no data | $241 |
Detailed specifications
Core 2 Duo E6400 and Core i5-520UM 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 | 2 (Dual-core) | 2 (Dual-core) |
| Threads | 2 | 4 |
| Base clock speed | 2.13 GHz | 1.07 GHz |
| Boost clock speed | 2.13 GHz | 1.87 GHz |
| Bus type | no data | DMI 1.0 |
| Bus rate | 1066 MHz | 1 × 2.5 GT/s |
| Multiplier | no data | 8 |
| L1 cache | 64 KB | 128 KB |
| L2 cache | 2 MB | 512 KB |
| L3 cache | 0 KB | 3 MB |
| Chip lithography | 65 nm | 32 nm |
| Die size | 143 mm2 | 81+114 mm2 |
| Maximum core temperature | 61 °C | 105 °C |
| Number of transistors | 291 million | 382+177 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | 0.85V-1.5V | no data |
Compatibility
Information on Core 2 Duo E6400 and Core i5-520UM 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 | LGA775,PLGA775 | BGA1288 |
| Power consumption (TDP) | 65 Watt | 18 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Duo E6400 and Core i5-520UM. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2 |
| AES-NI | - | + |
| FMA | - | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | + |
| Hyper-Threading Technology | - | + |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | no data | + |
| Demand Based Switching | - | no data |
| PAE | no data | 36 Bit |
| FDI | no data | + |
| Fast Memory Access | no data | + |
| FSB parity | - | no data |
Security technologies
Core 2 Duo E6400 and Core i5-520UM technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | + |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Duo E6400 and Core i5-520UM 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 Duo E6400 and Core i5-520UM. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR3-800 |
| Maximum memory size | no data | 8 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 12.799 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel® HD Graphics for Previous Generation Intel® Processors |
| Clear Video | no data | + |
| Clear Video HD | no data | + |
| Graphics max frequency | no data | 500 MHz |
Graphics interfaces
Available interfaces and connections of Core 2 Duo E6400 and Core i5-520UM integrated GPUs.
| Number of displays supported | no data | 2 |
Peripherals
Specifications and connection of peripherals supported by Core 2 Duo E6400 and Core i5-520UM.
| PCIe version | no data | 2.0 |
| PCI Express lanes | no data | 16 |
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.
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.
Pros & cons summary
| Performance score | 0.51 | 0.59 |
| Threads | 2 | 4 |
| Chip lithography | 65 nm | 32 nm |
| Power consumption (TDP) | 65 Watt | 18 Watt |
i5-520UM has a 15.7% higher aggregate performance score, 100% more threads, a 103.1% more advanced lithography process, and 261.1% lower power consumption.
The Core i5-520UM is our recommended choice as it beats the Core 2 Duo E6400 in performance tests.
Note that Core 2 Duo E6400 is a desktop processor while Core i5-520UM is a notebook one.
Should you still have questions on choice between Core 2 Duo E6400 and Core i5-520UM, ask them in Comments section, and we shall answer.
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