Atom x5-Z8550 vs Pentium 3805U

Primary details

Comparing Pentium 3805U and Atom x5-Z8550 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2678	2705
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Pentium	5x Intel Atom
Power efficiency	4.67	no data
Architecture codename	Broadwell-U (2015)	Cherry Trail (2015−2016)
Release date	1 March 2015 (9 years ago)	8 February 2016 (8 years ago)
Launch price (MSRP)	$161	no data

Detailed specifications

Pentium 3805U and Atom x5-Z8550 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)	4 (Quad-Core)
Threads	2	4
Base clock speed	1.9 GHz	1.44 GHz
Boost clock speed	1.9 GHz	2.4 GHz
Bus rate	5 GT/s	no data
L1 cache	64K (per core)	no data
L2 cache	256K (per core)	2 MB
L3 cache	2 MB (shared)	0 KB
Chip lithography	14 nm	14 nm
Die size	82 mm2	no data
Maximum core temperature	105 °C	90 °C
Maximum case temperature (TCase)	105 °C	no data
Number of transistors	1300 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Pentium 3805U and Atom x5-Z8550 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 (Uniprocessor)
Socket	FCBGA1168	UTFCBGA1380
Power consumption (TDP)	15 Watt	no data

Technologies and extensions

Technological solutions and additional instructions supported by Pentium 3805U and Atom x5-Z8550. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	no data
AES-NI	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Smart Response	-	no data
Turbo Boost Max 3.0	no data	-
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Pentium 3805U and Atom x5-Z8550 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
Secure Boot	no data	+
Secure Key	+	no data
Identity Protection	+	+
OS Guard	-	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium 3805U and Atom x5-Z8550 are enumerated here.

AMD-V	+	-
VT-d	+	no data
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium 3805U and Atom x5-Z8550. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	16 GB	8 GB
Max memory channels	2	2
Maximum memory bandwidth	25.6 GB/s	25.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics for 5th Generation Intel Processors	Intel HD Graphics 400 (Braswell) (200 - 600 MHz)
Max video memory	no data	8 GB
Quick Sync Video	+	-
Clear Video	+	no data
Graphics max frequency	800 MHz	600 MHz
Execution Units	no data	12
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Pentium 3805U and Atom x5-Z8550 integrated GPUs.

Number of displays supported	3	3
eDP	+	no data
DisplayPort	+	-
HDMI	+	-

Graphics image quality

Maximum display resolutions supported by Pentium 3805U and Atom x5-Z8550 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	no data	3840x2160
Max resolution over eDP	no data	2560x1600

Graphics API support

APIs supported by Pentium 3805U and Atom x5-Z8550 integrated GPUs, sometimes API versions are included.

DirectX

11.2/12

no data

Peripherals

Specifications and connection of peripherals supported by Pentium 3805U and Atom x5-Z8550.

PCIe version	2.0	2.0
PCI Express lanes	12	2
USB revision	no data	3.0
Number of USB ports	no data	3

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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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.

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Pros & cons summary

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Performance score	0.74	0.72
Integrated graphics card	0.77	0.45
Recency	1 March 2015	8 February 2016
Physical cores	2	4
Threads	2	4

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Should you still have questions on choice between Pentium 3805U and Atom x5-Z8550, ask them in Comments section, and we shall answer.

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