Xeon E5405 vs EPYC 7742

Primary details

Comparing EPYC 7742 and Xeon E5405 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	44	2372
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.72	no data
Market segment	Server	Server
Series	AMD EPYC	no data
Architecture codename	Zen 2 (2017−2020)	no data
Release date	7 August 2019 (5 years ago)	1 October 2007 (16 years ago)
Launch price (MSRP)	$6,950	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7742 and Xeon E5405 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	64 (Tetrahexaconta-Core)	no data
Threads	128	no data
Base clock speed	2.25 GHz	2 GHz
Boost clock speed	3.4 GHz	no data
Multiplier	22.5	no data
L1 cache	4 MB	no data
L2 cache	32 MB	no data
L3 cache	256 MB (shared)	12 MB L2 Cache
Chip lithography	7 nm, 14 nm	45 nm
Die size	192 mm2	no data
Maximum core temperature	no data	67 °C
Number of transistors	4,800 million	no data
64 bit support	+	+
Windows 11 compatibility	+	-
Unlocked multiplier	+	-
VID voltage range	no data	0.85V-1.35V

Compatibility

Information on EPYC 7742 and Xeon E5405 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	2 (Multiprocessor)	no data
Socket	TR4	LGA771
Power consumption (TDP)	225 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7742 and Xeon E5405. You'll probably need this information if you require some particular technology.

AES-NI	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	no data	-
Turbo Boost Technology	no data	-
Hyper-Threading Technology	no data	-
Idle States	no data	-
Thermal Monitoring	-	+
Demand Based Switching	no data	-
FSB parity	no data	+
Status	no data	Discontinued
Precision Boost 2	+	no data

Security technologies

EPYC 7742 and Xeon E5405 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 EPYC 7742 and Xeon E5405 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7742 and Xeon E5405. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	no data
Maximum memory size	4 TiB	no data
Max memory channels	8	no data
Maximum memory bandwidth	204.763 GB/s	no data
ECC memory support	+	-

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.

Pros & cons summary

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Performance score	45.04	1.11
Recency	7 August 2019	1 October 2007
Chip lithography	7 nm	45 nm
Power consumption (TDP)	225 Watt	80 Watt

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Should you still have questions on choice between EPYC 7742 and Xeon E5405, ask them in Comments section, and we shall answer.

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