Xeon 6979P vs EPYC 7742

Primary details

Comparing EPYC 7742 and Xeon 6979P processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	46	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.35	no data
Market segment	Server	Server
Series	AMD EPYC	no data
Power efficiency	18.45	no data
Architecture codename	Zen 2 (2017−2020)	Granite Rapids (2024)
Release date	7 August 2019 (5 years ago)	24 September 2024 (less than a year ago)
Launch price (MSRP)	$6,950	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7742 and Xeon 6979P 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)	120
Threads	128	240
Base clock speed	2.25 GHz	2.1 GHz
Boost clock speed	3.4 GHz	3.9 GHz
Multiplier	22.5	no data
L1 cache	96K (per core)	112 KB (per core)
L2 cache	512K (per core)	2 MB (per core)
L3 cache	256 MB (shared)	504 MB (shared)
Chip lithography	7 nm, 14 nm	5 nm
Die size	192 mm2	no data
Maximum case temperature (TCase)	no data	80 °C
Number of transistors	4,800 million	no data
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on EPYC 7742 and Xeon 6979P 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)	2
Socket	TR4	7529
Power consumption (TDP)	225 Watt	500 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7742 and Xeon 6979P. You'll probably need this information if you require some particular technology.

AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	no data	+
TSX	-	+
Precision Boost 2	+	no data

Security technologies

EPYC 7742 and Xeon 6979P technologies aimed at improving security, for example, by protecting against hacks.

TXT

no data

+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7742 and Xeon 6979P are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7742 and Xeon 6979P. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	DDR5
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	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

N/A

Peripherals

Specifications and connection of peripherals supported by EPYC 7742 and Xeon 6979P.

PCIe version	no data	5.0
PCI Express lanes	no data	96

Pros & cons summary

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Recency	7 August 2019	24 September 2024
Physical cores	64	120
Threads	128	240
Chip lithography	7 nm	5 nm
Power consumption (TDP)	225 Watt	500 Watt

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