i7-640M vs Xeon L5638
Aggregate performance score
Xeon L5638 outperforms Core i7-640M by an impressive 79% based on our aggregate benchmark results.
Primary details
Comparing Xeon L5638 and Core i7-640M processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1790 | 2266 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.73 | no data |
| Market segment | Server | Laptop |
| Series | no data | Intel Core i7 |
| Power efficiency | 3.68 | 3.52 |
| Architecture codename | Westmere-EP (2010−2011) | Arrandale (2010−2011) |
| Release date | 16 March 2010 (14 years ago) | 1 September 2010 (14 years ago) |
| Launch price (MSRP) | $90 | $346 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon L5638 and Core i7-640M 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 | 6 (Hexa-Core) | 2 (Dual-core) |
| Threads | 12 | 4 |
| Base clock speed | 2 GHz | 2.8 GHz |
| Boost clock speed | 2.4 GHz | 3.46 GHz |
| Bus type | no data | DMI 1.0 |
| Bus rate | no data | 1 × 2.5 GT/s |
| Multiplier | no data | 21 |
| L1 cache | 64 KB (per core) | 64K (per core) |
| L2 cache | 256 KB (per core) | 256K (per core) |
| L3 cache | 12 MB (shared) | 4 MB (shared) |
| Chip lithography | 32 nm | 32 nm |
| Die size | 239 mm2 | 81+114 mm2 |
| Maximum core temperature | 85 °C | 105 °C |
| Number of transistors | 1,170 million | 384 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Xeon L5638 and Core i7-640M 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 | 2 | 1 (Uniprocessor) |
| Socket | FCLGA1366,LGA1366 | BGA1288,PGA988 |
| Power consumption (TDP) | 60 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon L5638 and Core i7-640M. 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 | 1.0 | + |
| Hyper-Threading Technology | + | + |
| Idle States | + | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| PAE | no data | 36 Bit |
| FDI | no data | + |
| Fast Memory Access | no data | + |
Security technologies
Xeon L5638 and Core i7-640M technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon L5638 and Core i7-640M are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon L5638 and Core i7-640M. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | no data | 8 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 17.051 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 | 766 MHz |
Graphics interfaces
Available interfaces and connections of Xeon L5638 and Core i7-640M integrated GPUs.
| Number of displays supported | no data | 2 |
Peripherals
Specifications and connection of peripherals supported by Xeon L5638 and Core i7-640M.
| PCIe version | 2.0 | 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 | 2.33 | 1.30 |
| Recency | 16 March 2010 | 1 September 2010 |
| Physical cores | 6 | 2 |
| Threads | 12 | 4 |
| Power consumption (TDP) | 60 Watt | 35 Watt |
Xeon L5638 has a 79.2% higher aggregate performance score, and 200% more physical cores and 200% more threads.
i7-640M, on the other hand, has an age advantage of 5 months, and 71.4% lower power consumption.
The Xeon L5638 is our recommended choice as it beats the Core i7-640M in performance tests.
Be aware that Xeon L5638 is a server/workstation processor while Core i7-640M is a notebook one.
Should you still have questions on choice between Xeon L5638 and Core i7-640M, ask them in Comments section, and we shall answer.
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