Intel Pentium 3805U
The Intel Pentium 3805U is an entry-level, ULV (ultra low voltage) dual-core processor based on the Broadwell architecture, which has been launched in January 2015. In addition to two CPU cores clocked at 1.9 GHz (no Turbo or Hyper-Threading), the chip also integrates an HD Graphics GPU and a dual-channel DDR3(L)-1600 memory controller. The CPU is manufactured in a 14 nm process with FinFET transistors.
Architecture
Broadwell represents the "Tick" in Intel's Tick-Tock model, which means a shrink of its predecessor Haswell. The new 14 nm manufacturing process with three-dimensional FinFET transistors allows not only improvements in energy efficiency, but also a significantly smaller die size fit for more compact packages and devices.
Further advantages result from the revised microarchitecture of Broadwell. Due to its improved branch prediction, bigger buffer sizes (1500 instead of 1000 entries in the L2 TLB) and other tweaks, the performance per clock has been increased by more than 5 percent over its predecessor. There are also some new instruction set extensions designed for cryptographic applications.
Performance
Thanks to its improved architecture and the slightly higher clock rate, the Pentium 3805U should end up 15 - 20 percent faster than the Pentium 3556U (1.7 GHz, Haswell). Thus, the CPU has sufficient power for office and multimedia purposes as well as most applications.
Graphics
The integrated HD Graphics (Broadwell) offers 12 Execution Units (EUs) clocked at 100 - 800 MHz. Similar to the CPU core, the GPU architecture (Intel Gen 8) has been thoroughly revised for improved performance-per-clock. We expect the HD Graphics (Broadwell) to beat the HD Graphics (Haswell) (10 EUs) as well as the HD Graphics 4200 (20 EUs), both part of the Haswell generation. Nevertheless, most games as of 2015 should be playable only in very low settings.
Broadwell is the first Intel chip to fully support DirectX 11.2 as well as OpenCL 1.3/2.0 and OpenGL 4.3. Video will output natively via DisplayPort 1.2 or HDMI 1.4a. However, the new HDMI 2.0 standard is not officially supported.
Power Consumption
The Pentium 3805U is rated at a TDP of 15 W (10 W cTDP Down) including the graphics card, memory controller, VRMs and the integrated chipset. Therefore, the CPU is suited even for small subnotebooks 11-inches and greater.
| Codename | Broadwell | ||||||||
| Series | Intel Pentium | ||||||||
Series: Pentium Broadwell
| |||||||||
| Clock Rate | 1900 MHz | ||||||||
| Level 1 Cache | 128 KB | ||||||||
| Level 2 Cache | 512 KB | ||||||||
| Level 3 Cache | 2 MB | ||||||||
| Number of Cores / Threads | 2 / 2 | ||||||||
| Power Consumption (TDP = Thermal Design Power) | 15 Watt | ||||||||
| Transistor Count | 1300 Million | ||||||||
| Manufacturing Technology | 14 nm | ||||||||
| Die Size | 82 mm2 | ||||||||
| Max. Temperature | 105 °C | ||||||||
| Socket | BGA | ||||||||
| Features | DDR3(L)-1600 Memory Controller, Virtualization, Wireless Display, Quick Sync | ||||||||
| GPU | Intel HD Graphics (Broadwell) (100 - 800 MHz) | ||||||||
| 64 Bit | 64 Bit support | ||||||||
| Architecture | x86 | ||||||||
| Starting Price | $161 U.S. | ||||||||
| Announcement Date | 01/05/2015 | ||||||||
Benchmarks
- Average benchmark values* Smaller numbers mean a higher performance
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Reviews for the Intel Pentium 3805U processor
Lenovo G70-80-80FF00A9GE: Intel HD Graphics (Broadwell), 17.30", 2.9 kg
External Review » Lenovo G70-80-80FF00A9GE
Lenovo Yoga 500-15-80N6001JGE: Intel HD Graphics (Broadwell), 15.60", 1.8 kg
External Review » Lenovo Yoga 500-15-80N6001JGE
Medion Akoya E7416T: Intel HD Graphics (Broadwell), 17.30", 3 kg
External Review » Medion Akoya E7416T
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