Core 2 Duo E4400 vs Pentium 2127U
Aggregate performance score
Pentium 2127U outperforms Core 2 Duo E4400 by a considerable 49% based on our aggregate benchmark results.
Primary details
Comparing Pentium 2127U and Core 2 Duo E4400 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2732 | 2929 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Pentium | no data |
| Power efficiency | 3.73 | 0.66 |
| Architecture codename | Ivy Bridge (2012−2013) | Allendale (2006−2009) |
| Release date | 1 July 2013 (11 years ago) | July 2007 (17 years ago) |
| Launch price (MSRP) | $134 | no data |
Detailed specifications
Pentium 2127U and Core 2 Duo E4400 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 | 2 |
| Base clock speed | 1.9 GHz | 2 GHz |
| Boost clock speed | 1.9 GHz | 2 GHz |
| Bus rate | 5 GT/s | 800 MHz |
| L1 cache | 128 KB | 64 KB |
| L2 cache | 512 KB | 2 MB |
| L3 cache | 2 MB | 0 KB |
| Chip lithography | 22 nm | 65 nm |
| Die size | no data | 111 mm2 |
| Maximum core temperature | 105 °C | L2=61 °C, M0=73 °C |
| Number of transistors | no data | 167 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | no data | 0.85V-1.5V |
Compatibility
Information on Pentium 2127U and Core 2 Duo E4400 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 |
| Socket | FCBGA1023 | LGA775 |
| Power consumption (TDP) | 17 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium 2127U and Core 2 Duo E4400. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2 | no data |
| Enhanced SpeedStep (EIST) | + | + |
| My WiFi | + | no data |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | + | no data |
| Demand Based Switching | - | - |
| FDI | + | no data |
| Fast Memory Access | + | no data |
| FSB parity | no data | - |
Security technologies
Pentium 2127U and Core 2 Duo E4400 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
| Anti-Theft | - | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium 2127U and Core 2 Duo E4400 are enumerated here.
| VT-d | - | no data |
| VT-x | + | - |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium 2127U and Core 2 Duo E4400. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR1, DDR2, DDR3 |
| Maximum memory size | 32 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 25.6 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics for 3rd Generation Intel Processors | no data |
| Graphics max frequency | 1.1 GHz | no data |
Graphics interfaces
Available interfaces and connections of Pentium 2127U and Core 2 Duo E4400 integrated GPUs.
| Number of displays supported | 3 | no data |
| eDP | + | no data |
| DisplayPort | + | - |
| HDMI | + | - |
| SDVO | + | no data |
| CRT | + | no data |
Peripherals
Specifications and connection of peripherals supported by Pentium 2127U and Core 2 Duo E4400.
| PCIe version | 2.0 | no data |
| PCI Express lanes | 16 | 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.
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.
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.
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.
Pros & cons summary
| Performance score | 0.67 | 0.45 |
| Chip lithography | 22 nm | 65 nm |
| Power consumption (TDP) | 17 Watt | 65 Watt |
Pentium 2127U has a 48.9% higher aggregate performance score, a 195.5% more advanced lithography process, and 282.4% lower power consumption.
The Pentium 2127U is our recommended choice as it beats the Core 2 Duo E4400 in performance tests.
Be aware that Pentium 2127U is a notebook processor while Core 2 Duo E4400 is a desktop one.
Should you still have questions on choice between Pentium 2127U and Core 2 Duo E4400, ask them in Comments section, and we shall answer.
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