EPYC 7642 vs Xeon E7-8850

Primary details

Comparing Xeon E7-8850 and EPYC 7642 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	88
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	5.41
Market segment	Server	Server
Series	Intel Xeon E7	AMD EPYC
Architecture codename	Westmere-EX (2011)	Zen 2 (2017−2020)
Release date	5 April 2011 (13 years ago)	7 August 2019 (5 years ago)
Launch price (MSRP)	$3,059	$4,775

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E7-8850 and EPYC 7642 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)	48 (Octatetraconta-Core)
Threads	20	96
Base clock speed	2 GHz	2.4 GHz
Boost clock speed	2.4 GHz	3.3 GHz
Bus type	QPI	no data
Bus rate	6.4 GT/s	no data
Multiplier	15	23
L1 cache	640 KB	3 MB
L2 cache	2.56 MB	24 MB
L3 cache	24 MB	256 MB (shared)
Chip lithography	32 nm	7 nm, 14 nm
Die size	513 mm2	192 mm2
Maximum core temperature	69 °C	no data
Number of transistors	2600 Million	4,800 million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+

Compatibility

Information on Xeon E7-8850 and EPYC 7642 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)	2 (Multiprocessor)
Socket	LGA1567	TR4
Power consumption (TDP)	130 Watt	225 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E7-8850 and EPYC 7642. 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	+	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	1.0	no data
Hyper-Threading Technology	+	no data
Thermal Monitoring	+	-
Status	Discontinued	no data
Precision Boost 2	no data	+

Security technologies

Xeon E7-8850 and EPYC 7642 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E7-8850 and EPYC 7642 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E7-8850 and EPYC 7642. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4 Eight-channel
Maximum memory size	4 TB	4 TiB
Max memory channels	4	8
Maximum memory bandwidth	34.113 GB/s	204.763 GB/s
ECC memory support	+	+

Pros & cons summary

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Recency	5 April 2011	7 August 2019
Physical cores	10	48
Threads	20	96
Chip lithography	32 nm	7 nm
Power consumption (TDP)	130 Watt	225 Watt

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