EPYC 9555 vs Xeon L5638

Primary details

Comparing Xeon L5638 and EPYC 9555 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1788	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.73	no data
Market segment	Server	Server
Power efficiency	3.68	no data
Architecture codename	Westmere-EP (2010−2011)	Turin (2024)
Release date	16 March 2010 (14 years ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	$90	$9,826

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon L5638 and EPYC 9555 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	6 (Hexa-Core)	64 (Tetrahexaconta-Core)
Threads	12	128
Base clock speed	2 GHz	3.2 GHz
Boost clock speed	2.4 GHz	4.4 GHz
L1 cache	64 KB (per core)	80 KB (per core)
L2 cache	256 KB (per core)	1 MB (per core)
L3 cache	12 MB (shared)	256 MB (shared)
Chip lithography	32 nm	4 nm
Die size	239 mm2	8x 70.6 mm2
Maximum core temperature	85 °C	no data
Number of transistors	1,170 million	66,520 million
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Xeon L5638 and EPYC 9555 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	2
Socket	FCLGA1366,LGA1366	SP5
Power consumption (TDP)	60 Watt	360 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon L5638 and EPYC 9555. You'll probably need this information if you require some particular technology.

AES-NI	+	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	1.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Precision Boost 2	no data	+

Security technologies

Xeon L5638 and EPYC 9555 technologies aimed at improving security, for example, by protecting against hacks.

TXT

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon L5638 and EPYC 9555 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 Xeon L5638 and EPYC 9555. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

DDR5

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 L5638 and EPYC 9555.

PCIe version	2.0	5.0
PCI Express lanes	no data	128

Pros & cons summary

---

Recency	16 March 2010	10 October 2024
Physical cores	6	64
Threads	12	128
Chip lithography	32 nm	4 nm
Power consumption (TDP)	60 Watt	360 Watt

---

Should you still have questions on choice between Xeon L5638 and EPYC 9555, 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.

---