Xeon Platinum 8558U vs Gold 6438Y+

Primary details

Comparing Xeon Gold 6438Y+ and Xeon Platinum 8558U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Architecture codename	Sapphire Rapids (2023−2024)	Emerald Rapids (2023)
Release date	10 January 2023 (1 year ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$3,141	$3,720

Detailed specifications

Xeon Gold 6438Y+ and Xeon Platinum 8558U 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	32 (Dotriaconta-Core)	48 (Octatetraconta-Core)
Threads	64	96
Base clock speed	2 GHz	2 GHz
Boost clock speed	4 GHz	4 GHz
L1 cache	80K (per core)	80 KB (per core)
L2 cache	2 MB (per core)	2 MB (per core)
L3 cache	60 MB	260 MB (shared)
Chip lithography	10 nm	Intel 7 nm
Die size	no data	2x 763 mm2
Maximum case temperature (TCase)	85 °C	78 °C
64 bit support	+	+
Windows 11 compatibility	+	no data

Compatibility

Information on Xeon Gold 6438Y+ and Xeon Platinum 8558U 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	1
Socket	4677	FCLGA4677
Power consumption (TDP)	205 Watt	300 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Gold 6438Y+ and Xeon Platinum 8558U. 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	+	+
vPro	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	no data	2.0
Hyper-Threading Technology	no data	+
TSX	+	+
Deep Learning Boost	-	+

Security technologies

Xeon Gold 6438Y+ and Xeon Platinum 8558U technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Gold 6438Y+ and Xeon Platinum 8558U are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Gold 6438Y+ and Xeon Platinum 8558U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5-4800	DDR5 @ 4800 MT/s (1 DPC)
Maximum memory size	no data	4 TB
Max memory channels	no data	8
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 Xeon Gold 6438Y+ and Xeon Platinum 8558U.

PCIe version	5.0	5.0
PCI Express lanes	80	80

Pros & cons summary

---

Recency	10 January 2023	14 December 2023
Physical cores	32	48
Threads	64	96
Power consumption (TDP)	205 Watt	300 Watt

---

Should you still have questions on choice between Xeon Gold 6438Y+ and Xeon Platinum 8558U, 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.

---