Xeon 2.66 vs EPYC 7401P

Primary details

Comparing processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	504	3451
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.60	no data
Market segment	Server	Server
Series	AMD EPYC	no data
Power efficiency	3.95	0.12
Designer	AMD	Intel
Architecture codename	Naples (2017−2018)	Prestonia (2002)
Release date	29 June 2017 (8 years ago)	November 2002 (23 years ago)
Launch price (MSRP)	$1,075	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Performance to price scatter graph

Detailed specifications

EPYC 7401P and Xeon 2.66 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	24 (Tetracosa-Core)	1 (Single-Core)
Threads	48	1
Base clock speed	2 GHz	no data
Boost clock speed	3 GHz	2.66 GHz
Multiplier	20	no data
L1 cache	96K (per core)	16 KB
L2 cache	512K (per core)	512 KB
L3 cache	64 MB (shared)	0 KB
Chip lithography	14 nm	130 nm
Die size	192 mm2	217 mm2
Number of transistors	4,800 million	55 million
64 bit support	+	-
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on EPYC 7401P and Xeon 2.66 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 (Uniprocessor)	2
Socket	TR4	604
Power consumption (TDP)	170 Watt	89 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7401P and Xeon 2.66. You'll probably need this information if you require some particular technology.

AES-NI	+	-
AVX	+	-

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7401P and Xeon 2.66 are enumerated here.

AMD-V

+

-

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7401P and Xeon 2.66. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	no data
Maximum memory size	2 TiB	no data
Max memory channels	8	no data
Maximum memory bandwidth	170.671 GB/s	no data
ECC memory support	+	-

Peripherals

Specifications and connection of peripherals supported by EPYC 7401P and Xeon 2.66.

PCIe version	3.0	no data
PCI Express lanes	128	no data

Synthetic benchmarks

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.

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Pros & cons summary

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Performance score	15.89	0.25
Physical cores	24	1
Threads	48	1
Chip lithography	14 nm	130 nm
Power consumption (TDP)	170 Watt	89 Watt

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