Xeon L5638: specs and benchmarks

Summary

Intel started Xeon L5638 sales 16 March 2010 at a recommended price of $90. This is a Westmere-EP architecture desktop processor primarily aimed at office systems. It has 6 cores and 12 threads, and is based on 32 nm manufacturing technology, with a maximum frequency of 2400 MHz and a locked multiplier.

Compatibility-wise, this is FCLGA1366,LGA1366 processor with a TDP of 60 Watt. It supports DDR3 memory.

Primary details

Xeon L5638 processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in the ranking	1768
Place by popularity	not in top-100
Cost-effectiveness evaluation	1.73
Market segment	Server
Power efficiency	3.69	of 100.00 (Core Ultra 7 164U)
Architecture codename	Westmere-EP (2010−2011)
Release date	16 March 2010 (14 years ago)
Launch price (MSRP)	$90	of 17,906 (tray) (Xeon Platinum 8280L)

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores	6 (Hexa-Core)
Threads	12
Base clock speed	2 GHz	of 4.7 GHz (Ryzen 9 7900X)
Boost clock speed	2.4 GHz	of 50 MHz (i486DX-50)
L1 cache	64 KB (per core)	of 7475.2 KB (Apple M2 Pro 10-Core)
L2 cache	256 KB (per core)	of 86016 KB (EPYC 9634)
L3 cache	12 MB (shared)	of 1179648 KB (EPYC 9684X)
Chip lithography	32 nm	of 0.18 µm (K6-2+/450ACZ)
Die size	239 mm2
Maximum core temperature	85 °C	of 110 °C (Core Ultra 9 185H)
Number of transistors	1,170 million	of 135,240 million (EPYC 9684X)
64 bit support	+
Windows 11 compatibility	-

Compatibility

Information on Xeon L5638 compatibility with other computer components and devices: 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	of 8 (Xeon Platinum 8454H)
Socket	FCLGA1366,LGA1366
Power consumption (TDP)	60 Watt	of 500 Watt (Xeon 6960P)

Technologies and extensions

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

AES-NI	+
Enhanced SpeedStep (EIST)	+
Turbo Boost Technology	1.0
Hyper-Threading Technology	+
Idle States	+
Status	Discontinued

Security technologies

Processor technologies aimed at improving security, for example, by protecting against hacks.

TXT

+

Virtualization technologies

Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.

VT-d	+
VT-x	+
EPT	+

Memory specs

Types, maximum amount and channel number of RAM supported by Xeon L5638's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory types

DDR3

Peripherals

Specifications and connection types of supported peripherals.

PCIe version

2.0

of 5.0 (Ryzen Threadripper PRO 7995WX)

Benchmark performance

Single-core and multi-core benchmark results of Xeon L5638. Overall benchmark performance 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.

Closest competitors

Xeon L5638's performance relative to its closest rivals among server CPUs.

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