Xeon E7-4820 vs E7-8850

Primary details

Comparing Xeon E7-8850 and Xeon E7-4820 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Series	Intel Xeon E7	Intel Xeon E7
Architecture codename	Westmere-EX (2011)	Westmere (2010−2011)
Release date	5 April 2011 (13 years ago)	5 April 2011 (13 years ago)
Launch price (MSRP)	$3,059	$1,446

Detailed specifications

Xeon E7-8850 and Xeon E7-4820 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	10 (Deca-Core)	8 (Octa-Core)
Threads	20	16
Base clock speed	2 GHz	2 GHz
Boost clock speed	2.4 GHz	2.27 GHz
Bus type	QPI	QPI
Bus rate	6.4 GT/s	5.86 GT/s
Multiplier	15	15
L1 cache	640 KB	512 KB
L2 cache	2.56 MB	2 MB
L3 cache	24 MB	18 MB
Chip lithography	32 nm	32 nm
Die size	513 mm2	513 mm2
Maximum core temperature	69 °C	64 °C
Number of transistors	2600 Million	2600 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E7-8850 and Xeon E7-4820 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	8 (Multiprocessor)	4 (Multiprocessor)
Socket	LGA1567	LGA1567
Power consumption (TDP)	130 Watt	105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E7-8850 and Xeon E7-4820. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	1.0	1.0
Hyper-Threading Technology	+	+
Thermal Monitoring	+	+
Status	Discontinued	Discontinued

Security technologies

Xeon E7-8850 and Xeon E7-4820 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E7-8850 and Xeon E7-4820 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E7-8850 and Xeon E7-4820. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3-800, DDR3-978, DDR3-1066, DDR3-1333, Speed-1066
Maximum memory size	4 TB	2 TB
Max memory channels	4	4
Maximum memory bandwidth	34.113 GB/s	34.113 GB/s
ECC memory support	+	+

Pros & cons summary

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Physical cores	10	8
Threads	20	16
Power consumption (TDP)	130 Watt	105 Watt

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Should you still have questions on choice between Xeon E7-8850 and Xeon E7-4820, ask them in Comments section, and we shall answer.

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