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Intel Pentium 3805U

Intel 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.

SeriesIntel Pentium
CodenameBroadwell
Series: Pentium Broadwell
Intel Pentium 3825U (compare)1900 MHz2 / 42 MB
» Intel Pentium 3805U1900 MHz2 / 22 MB
Clock Rate1900 MHz
Level 1 Cache128 KB
Level 2 Cache512 KB
Level 3 Cache2 MB
Number of Cores / Threads2 / 2
Max. Power Consumption (TDP = Thermal Design Power)15 Watt
Transistor Count1300 Million
Manufacturing Technology14 nm
Die Size82 mm2
Max. Temperature105 °C
SocketBGA
FeaturesAVX, AES-NI, DDR3(L)-1600 Memory Controller, Virtualization, Wireless Display, Quick Sync
GPUIntel HD Graphics (Broadwell) (100 - 800 MHz)
64 Bit64 Bit support
Starting Price$161 U.S.
Announcement Date01/05/2015

Benchmarks

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* 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), 17.3")
» Lenovo G70-80-80FF00A9GE - External Review

Lenovo Yoga 500-15-80N6001JGE (Intel HD Graphics (Broadwell), 15.6")
» Lenovo Yoga 500-15-80N6001JGE - External Review

Medion Akoya E7416T (Intel HD Graphics (Broadwell), 17.3")
» Medion Akoya E7416T - External Review

» Mobile CPU Comparison
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Benchmarklist of all known CPUs that are used in laptops (desktop and laptop CPUs)

Other CPUs of the series Intel Pentium

» Intel Pentium 4415U
   2.3 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 4405U
   2.1 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 3560M
   2.4 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 2030M
   2.5 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 3550M
   2.3 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 2020M
   2.4 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 3825U
   1.9 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium B980
   2.4 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium N5000
   1.1 GHz / 4 MB L2
» Intel Pentium 4405Y
   1.5 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 4415Y
   1.6 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium B970
   2.3 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium N4200
   1.1 GHz / 2 MB L2
» Intel Pentium 4410Y
   1.5 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium B960
   2.2 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 3805U
   1.9 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium B950
   2.1 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium P6300
   2.27 GHz / 0.5 MB L2 + 3 MB L3
» Intel Pentium 2127U
   1.9 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium B940
   2 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 3558U
   1.7 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 3556U
   1.7 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 2117U
   1.8 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium P6200
   2.13 GHz / 0.5 MB L2 + 3 MB L3
» Intel Pentium P6100
   2 GHz / 0.5 MB L2 + 3 MB L3
» Intel Pentium N3540
   2.16 GHz / 2 MB L2
» Intel Pentium N3710
   1.6 GHz / 2 MB L2
» Intel Pentium P6000
   1.86 GHz / 0.5 MB L2 + 3 MB L3
» Intel Pentium J2900
   2.41 GHz / 2 MB L2
» Intel Pentium N3530
   2.16 GHz / 2 MB L2
» Intel Pentium N3700
   1.6 GHz / 2 MB L2
» Intel Pentium J2850
   2.4 GHz / 2 MB L2
» Intel Pentium N3520
   2.17 GHz / 2 MB L2
» Intel Pentium N3510
   2 GHz / 2 MB L2
» Intel Pentium 997
   1.6 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 987
   1.5 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 3561Y
   1.2 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 3560Y
   1.2 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 2129Y
   1.1 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 977
   1.4 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium 967
   1.3 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium U5600
   1.33 GHz / 0.5 MB L2 + 3 MB L3
» Intel Pentium 957
   1.2 GHz / 0.5 MB L2 + 2 MB L3
» Intel Pentium U5400
   1.2 GHz / 0.5 MB L2 + 3 MB L3
» Intel Pentium SU2700
   1.3 GHz / 2 MB L2

Surrounding CPUs

- Intel Celeron 1020M
   2.1 GHz / 0.5 MB + 2 MB
- Intel Core i3 350M
   2.26 GHz / 0.5 MB + 3 MB
- Intel Pentium 4410Y
   1.5 GHz / 0.5 MB + 2 MB
- Intel Celeron 3965Y
   1.5 GHz / 0.5 MB + 2 MB
- Intel Pentium B960
   2.2 GHz / 0.5 MB + 2 MB
» Intel Pentium 3805U
   1.9 GHz / 0.5 MB L2 + 2 MB L3
+ AMD Phenom II X2 N640
   2.9 GHz / 2048 KB
+ Intel Core 2 Extreme X7800
   2.6 GHz / 4096 KB
+ Intel Core 2 Duo T7800
   2.6 GHz / 4096 KB
+ Intel Core 2 Duo P8700
   2.53 GHz / 3072 KB
+ Intel Core i3 4020Y
   1.5 GHz / 512 KB + 3072 KB
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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Notebook Processors > Intel Pentium 3805U Notebook Processor
Klaus Hinum (Update: 2014-10-10)