Phenom II X4 840 vs Xeon E3-1271 v3

Primary details

Comparing Xeon E3-1271 v3 and Phenom II X4 840 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1175	2029
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.56	3.08
Market segment	Server	Desktop processor
Architecture codename	no data	Propus (2009−2011)
Release date	1 April 2014 (10 years ago)	4 January 2011 (13 years ago)
Launch price (MSRP)	no data	$90
Current price	$389	$40 (0.4x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

Phenom II X4 840 has 97% better value for money than Xeon E3-1271 v3.

Detailed specifications

Xeon E3-1271 v3 and Phenom II X4 840 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)	4 (Quad-Core)
Threads	8	4
Base clock speed	3.6 GHz	3.2 GHz
Boost clock speed	4 GHz	3.2 GHz
L1 cache	no data	128 KB (per core)
L2 cache	no data	512 KB (per core)
L3 cache	8 MB Intel® Smart Cache	0 KB
Chip lithography	22 nm	45 nm
Die size	no data	169 mm2
Number of transistors	no data	300 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Xeon E3-1271 v3 and Phenom II X4 840 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	AM3
Power consumption (TDP)	80 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E3-1271 v3 and Phenom II X4 840. You'll probably need this information if you require some particular technology.

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

Security technologies

Xeon E3-1271 v3 and Phenom II X4 840 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E3-1271 v3 and Phenom II X4 840 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E3-1271 v3 and Phenom II X4 840. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3L-1333, DDR3L-1600	DDR3
Maximum memory size	32 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	25.6 GB/s	no data
ECC memory support	+	no data

Peripherals

Specifications and connection of peripherals supported by Xeon E3-1271 v3 and Phenom II X4 840.

PCIe version	3.0	2.0
PCI Express lanes	16	no data

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.

Xeon E3-1271 v3 outperforms Phenom II X4 840 by 214% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	4.87	1.55
Recency	1 April 2014	4 January 2011
Threads	8	4
Chip lithography	22 nm	45 nm
Power consumption (TDP)	80 Watt	95 Watt

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Should you still have questions on choice between Xeon E3-1271 v3 and Phenom II X4 840, ask them in Comments section, and we shall answer.

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