Pentium 3805U vs Xeon E3-1226 v3

Primary details

Comparing Xeon E3-1226 v3 and Pentium 3805U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1529	2659
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.15	no data
Market segment	Server	Laptop
Series	Xeon (Desktop)	Intel Pentium
Power efficiency	3.94	4.71
Architecture codename	Haswell-WS (2013−2014)	Broadwell-U (2015)
Release date	11 May 2014 (10 years ago)	1 March 2015 (9 years ago)
Launch price (MSRP)	$213	$161

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E3-1226 v3 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	4 (Quad-Core)	2 (Dual-core)
Threads	4	2
Base clock speed	3.3 GHz	1.9 GHz
Boost clock speed	3.7 GHz	1.9 GHz
Bus rate	5 GT/s	5 GT/s
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	256K (per core)
L3 cache	8 MB (shared)	2 MB (shared)
Chip lithography	22 nm	14 nm
Die size	160 mm2	82 mm2
Maximum core temperature	no data	105 °C
Maximum case temperature (TCase)	no data	105 °C
Number of transistors	1,400 million	1300 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E3-1226 v3 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	FCLGA1150	FCBGA1168
Power consumption (TDP)	84 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E3-1226 v3 and Pentium 3805U. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	-
AVX	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	-
Hyper-Threading Technology	-	-
TSX	+	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
SIPP	+	-
Smart Response	no data	-
FDI	+	+
Fast Memory Access	+	+

Security technologies

Xeon E3-1226 v3 and Pentium 3805U technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E3-1226 v3 and Pentium 3805U are enumerated here.

AMD-V	+	+
VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E3-1226 v3 and Pentium 3805U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	32 GB	16 GB
Max memory channels	2	2
Maximum memory bandwidth	25.6 GB/s	25.6 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD P4600	Intel® HD Graphics for 5th Generation Intel® Processors
Max video memory	1.7 GB	no data
Quick Sync Video	+	+
Clear Video	no data	+
Clear Video HD	+	-
Graphics max frequency	1.2 GHz	800 MHz
Execution Units	20	no data
InTru 3D	+	+

Graphics interfaces

Available interfaces and connections of Xeon E3-1226 v3 and Pentium 3805U integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Xeon E3-1226 v3 and Pentium 3805U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	3840x2160@60Hz	no data
Max resolution over DisplayPort	3840x2160@60Hz	no data
Max resolution over VGA	2880x1800@60Hz	no data

Graphics API support

APIs supported by Xeon E3-1226 v3 and Pentium 3805U integrated GPUs, sometimes API versions are included.

DirectX	11.2	11.2/12
OpenGL	4.3	no data

Peripherals

Specifications and connection of peripherals supported by Xeon E3-1226 v3 and Pentium 3805U.

PCIe version	3.0	2.0
PCI Express lanes	16	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.

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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	3.56	0.76
Recency	11 May 2014	1 March 2015
Physical cores	4	2
Threads	4	2
Chip lithography	22 nm	14 nm
Power consumption (TDP)	84 Watt	15 Watt

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Should you still have questions on choice between Xeon E3-1226 v3 and Pentium 3805U, ask them in Comments section, and we shall answer.

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