Pentium 3556U vs Xeon E5440
Aggregate performance score
Xeon E5440 outperforms Pentium 3556U by a whopping 125% based on our aggregate benchmark results.
Primary details
Comparing Xeon E5440 and Pentium 3556U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2040 | 2624 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.38 | no data |
| Market segment | Server | Laptop |
| Series | no data | Intel Pentium |
| Architecture codename | no data | Haswell (2013−2015) |
| Release date | 1 January 2008 (16 years ago) | 1 September 2013 (10 years ago) |
| Current price | $91 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E5440 and Pentium 3556U 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 | no data | 2 (Dual-core) |
| Threads | no data | 2 |
| Base clock speed | 2.83 GHz | 1.7 GHz |
| Boost clock speed | no data | 1.7 GHz |
| L1 cache | no data | 64K (per core) |
| L2 cache | no data | 256K (per core) |
| L3 cache | 12 MB L2 Cache | 2 MB (shared) |
| Chip lithography | 45 nm | 22 nm |
| Die size | no data | 118 mm2 |
| Maximum core temperature | 67 °C | 100 °C |
| Maximum case temperature (TCase) | no data | 105 °C |
| Number of transistors | no data | 1,400 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
| VID voltage range | 0.85V-1.35V | no data |
Compatibility
Information on Xeon E5440 and Pentium 3556U 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 | no data | 1 |
| Socket | LGA771 | FCBGA1168 |
| Power consumption (TDP) | 80 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5440 and Pentium 3556U. 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 | no data | - |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| TSX | no data | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| SIPP | no data | - |
| Smart Response | no data | - |
| Demand Based Switching | + | no data |
| GPIO | no data | + |
| Smart Connect | no data | + |
| FDI | no data | - |
| AMT | no data | 9.5 |
| Matrix Storage | no data | - |
| FSB parity | + | no data |
| Status | Discontinued | Discontinued |
| HD Audio | no data | + |
| RST | no data | + |
Security technologies
Xeon E5440 and Pentium 3556U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
| Secure Key | no data | + |
| Identity Protection | no data | - |
| OS Guard | no data | - |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5440 and Pentium 3556U are enumerated here.
| AMD-V | no data | + |
| VT-d | no data | - |
| VT-x | + | + |
| EPT | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5440 and Pentium 3556U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR3 |
| Maximum memory size | no data | 16 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 25.6 GB/s |
| ECC memory support | no data | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel® HD Graphics for 4th Generation Intel® Processors |
| Clear Video | no data | + |
| Graphics max frequency | no data | 1 GHz |
Graphics interfaces
Available interfaces and connections of Xeon E5440 and Pentium 3556U integrated GPUs.
| Number of displays supported | no data | 3 |
| eDP | no data | + |
| DisplayPort | no data | + |
| HDMI | no data | + |
Peripherals
Specifications and connection of peripherals supported by Xeon E5440 and Pentium 3556U.
| PCIe version | no data | 2.0 |
| PCI Express lanes | no data | 10 |
| PCI support | no data | - |
| USB revision | no data | 3.0 |
| Total number of SATA ports | no data | 2 |
| Max number of SATA 6 Gb/s Ports | no data | 2 |
| Integrated IDE | no data | - |
| Number of USB ports | no data | 4 |
| Integrated LAN | no data | - |
| UART | 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.
Xeon E5440 outperforms Pentium 3556U by 125% 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%
Xeon E5440 outperforms Pentium 3556U by 124% 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%
Xeon E5440 outperforms Pentium 3556U by 16% 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%
Xeon E5440 outperforms Pentium 3556U by 105% in GeekBench 5 Multi-Core.
Pros & cons summary
| Performance score | 1.53 | 0.68 |
| Recency | 1 January 2008 | 1 September 2013 |
| Chip lithography | 45 nm | 22 nm |
| Power consumption (TDP) | 80 Watt | 15 Watt |
The Xeon E5440 is our recommended choice as it beats the Pentium 3556U in performance tests.
Be aware that Xeon E5440 is a server/workstation processor while Pentium 3556U is a notebook one.
Should you still have questions on choice between Xeon E5440 and Pentium 3556U, ask them in Comments section, and we shall answer.
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