Xeon Gold 6558Q vs EPYC 7251

Primary details

Comparing EPYC 7251 and Xeon Gold 6558Q processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	804	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.89	no data
Market segment	Server	Server
Series	AMD EPYC	no data
Power efficiency	7.42	no data
Architecture codename	Naples (2017−2018)	no data
Release date	29 June 2017 (7 years ago)	1 October 2023 (1 year ago)
Launch price (MSRP)	$574	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7251 and Xeon Gold 6558Q 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	8 (Octa-Core)	32 (Dotriaconta-Core)
Threads	16	64
Base clock speed	2.1 GHz	3.2 GHz
Boost clock speed	2.9 GHz	4.1 GHz
Multiplier	21	no data
L1 cache	96K (per core)	no data
L2 cache	512K (per core)	no data
L3 cache	32 MB (shared)	60 MB
Chip lithography	14 nm	Intel 7 nm
Die size	192 mm2	no data
Maximum core temperature	no data	66 °C
Number of transistors	4,800 million	no data
64 bit support	+	-
Windows 11 compatibility	-	no data
Unlocked multiplier	+	-

Compatibility

Information on EPYC 7251 and Xeon Gold 6558Q 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	FCLGA4677
Power consumption (TDP)	120 Watt	350 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7251 and Xeon Gold 6558Q. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	-
Speed Shift	no data	+
Turbo Boost Technology	no data	2.0
Hyper-Threading Technology	no data	+
TSX	-	+
Deep Learning Boost	-	+

Security technologies

EPYC 7251 and Xeon Gold 6558Q technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	no data	+
SGX	no data	Yes with Intel® SPS
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7251 and Xeon Gold 6558Q 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 EPYC 7251 and Xeon Gold 6558Q. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	DDR5-5200
Maximum memory size	2 TiB	4 TB
Max memory channels	8	8
Maximum memory bandwidth	153.652 GB/s	no data
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by EPYC 7251 and Xeon Gold 6558Q.

PCIe version	3.0	5.0
PCI Express lanes	128	80

Pros & cons summary

---

Recency	29 June 2017	1 October 2023
Physical cores	8	32
Threads	16	64
Power consumption (TDP)	120 Watt	350 Watt

---

Should you still have questions on choice between EPYC 7251 and Xeon Gold 6558Q, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---