Pentium 3805U vs Core 2 Duo E8400
Aggregate performance score
Pentium 3805U outperforms Core 2 Duo E8400 by a minimal 1% based on our aggregated benchmark results.
Primary details
Comparing Core 2 Duo E8400 and Pentium 3805U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2553 | 2541 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.86 | no data |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Pentium |
| Architecture codename | Wolfdale (2008−2010) | Broadwell-U (2015) |
| Release date | 1 January 2008 (16 years ago) | 1 March 2015 (9 years ago) |
| Launch price (MSRP) | no data | $161 |
| Current price | $67 | $317 (2x MSRP) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core 2 Duo E8400 and Pentium 3805U 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 | 3 GHz | 1.9 GHz |
| Boost clock speed | 3 GHz | 1.9 GHz |
| L1 cache | 64 KB (per core) | 64K (per core) |
| L2 cache | 6 MB (shared) | 256K (per core) |
| L3 cache | 0 KB | 2 MB (shared) |
| Chip lithography | 45 nm | 14 nm |
| Die size | 104 mm2 | 82 mm2 |
| Maximum core temperature | 72 °C | 105 °C |
| Maximum case temperature (TCase) | 72 °C | 105 °C |
| Number of transistors | 410 million | 1300 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
| VID voltage range | 0.85V-1.3625V | no data |
Compatibility
Information on Core 2 Duo E8400 and Pentium 3805U 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 | LGA775 | FCBGA1168 |
| Power consumption (TDP) | 65 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Duo E8400 and Pentium 3805U. 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 | - | - |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| TSX | no data | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | no data | + |
| SIPP | no data | - |
| Smart Response | no data | - |
| Demand Based Switching | - | no data |
| FDI | no data | + |
| Fast Memory Access | no data | + |
| FSB parity | - | no data |
| Status | Discontinued | Discontinued |
Security technologies
Core 2 Duo E8400 and Pentium 3805U 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 | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Duo E8400 and Pentium 3805U are enumerated here.
| AMD-V | no data | + |
| VT-d | + | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E8400 and Pentium 3805U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR3 |
| Maximum memory size | no data | 16 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 25.6 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | Intel® HD Graphics for 5th Generation Intel® Processors |
| Quick Sync Video | no data | + |
| Clear Video | no data | + |
| Graphics max frequency | no data | 800 MHz |
| InTru 3D | no data | + |
Graphics interfaces
Available interfaces and connections of Core 2 Duo E8400 and Pentium 3805U integrated GPUs.
| Number of displays supported | no data | 3 |
| eDP | no data | + |
| DisplayPort | no data | + |
| HDMI | no data | + |
Graphics API support
APIs supported by Core 2 Duo E8400 and Pentium 3805U integrated GPUs, sometimes API versions are included.
| DirectX | no data | 11.2/12 |
Peripherals
Specifications and connection of peripherals supported by Core 2 Duo E8400 and Pentium 3805U.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | no data | 12 |
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.
Pentium 3805U outperforms Core 2 Duo E8400 by 1% based on our aggregated 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%
Pentium 3805U outperforms Core 2 Duo E8400 by 1% 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%
Core 2 Duo E8400 outperforms Pentium 3805U by 15% 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%
Core 2 Duo E8400 outperforms Pentium 3805U by 6% in GeekBench 5 Multi-Core.
Pros & cons summary
| Performance score | 0.75 | 0.76 |
| Recency | 1 January 2008 | 1 March 2015 |
| Chip lithography | 45 nm | 14 nm |
| Power consumption (TDP) | 65 Watt | 15 Watt |
Given the minimal performance differences, no clear winner can be declared between Core 2 Duo E8400 and Pentium 3805U.
Note that Core 2 Duo E8400 is a desktop processor while Pentium 3805U is a notebook one.
Should you still have questions on choice between Core 2 Duo E8400 and Pentium 3805U, ask them in Comments section, and we shall answer.
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