Intel Xeon D-2123IT vs Intel Xeon L5520

Comparative analysis of Intel Xeon D-2123IT and Intel Xeon L5520 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

Intel Xeon D-2123IT

Intel Xeon L5520

Differences

Reasons to consider the Intel Xeon D-2123IT

Around 21% higher clock speed: 3.00 GHz vs 2.48 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 14 nm vs 45 nm
3.6x more maximum memory size: 512 GB vs 144 GB
Around 78% better performance in PassMark - Single thread mark: 1725 vs 969
Around 46% better performance in PassMark - CPU mark: 6676 vs 4561

Specifications (specs)
Maximum frequency	3.00 GHz vs 2.48 GHz
Manufacturing process technology	14 nm vs 45 nm
Maximum memory size	512 GB vs 144 GB
Benchmarks
PassMark - Single thread mark	1725 vs 969
PassMark - CPU mark	6676 vs 4561

Reasons to consider the Intel Xeon L5520

Max number of CPUs in a configuration	2 vs 1

Compare benchmarks

CPU 1: Intel Xeon D-2123IT
CPU 2: Intel Xeon L5520

PassMark - Single thread mark

CPU 1

CPU 2

1725

969

PassMark - CPU mark

CPU 1

CPU 2

6676

4561

Name	Intel Xeon D-2123IT	Intel Xeon L5520
PassMark - Single thread mark	1725	969
PassMark - CPU mark	6676	4561
Geekbench 4 - Single Core		2032
Geekbench 4 - Multi-Core		6619

Compare specifications (specs)

	Intel Xeon D-2123IT	Intel Xeon L5520
Essentials
Architecture codename	Skylake	Nehalem EP
Launch date	Q1'18	March 2009
Place in performance rating	1423	1428
Processor Number	D-2123IT	L5520
Series	Intel® Xeon® D Processor	Legacy Intel® Xeon® Processors
Status	Launched	Launched
Vertical segment	Server	Server
Launch price (MSRP)		$100
Price now		$12.92
Value for money (0-100)		100.00
Performance
64 bit support
Base frequency	2.20 GHz	2.26 GHz
Manufacturing process technology	14 nm	45 nm
Maximum frequency	3.00 GHz	2.48 GHz
Number of cores	4	4
Number of threads	8	8
Number of Ultra Path Interconnect (UPI) Links	0
Bus Speed		5.86 GT/s QPI
Die size		263 mm2
L1 cache		64 KB (per core)
L2 cache		256 KB (per core)
L3 cache		8192 KB (shared)
Maximum core temperature		70°C
Number of QPI Links		2
Transistor count		731 million
VID voltage range		0.75V -1.35V
Memory
Max memory channels	4	3
Maximum memory size	512 GB	144 GB
Supported memory frequency	2400 MHz
Supported memory types	DDR4	DDR3 800/1066
ECC memory support
Maximum memory bandwidth		25.6 GB/s
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	2
Sockets supported	FCBGA2518	FCLGA1366
Thermal Design Power (TDP)	60 Watt	60 Watt
Package Size		42.5mm x 45mm
Peripherals
Max number of PCIe lanes	32
PCI Express revision	3.0
PCIe configurations	>
Scalability	1S Only
Security & Reliability
Execute Disable Bit (EDB)
Intel® Memory Protection Extensions (Intel® MPX)
Intel® OS Guard
Intel® Secure Key technology
Intel® Software Guard Extensions (Intel® SGX)
Intel® Trusted Execution technology (TXT)
Secure Boot
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions	Intel® AVX2
Integrated Intel® QuickAssist Technology
Intel 64
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® Optane™ Memory Supported
Intel® TSX-NI
Intel® Turbo Boost technology
Intel® Volume Management Device (VMD)
Number of AVX-512 FMA Units	1
Thermal Monitoring
Intel® Demand Based Switching
Physical Address Extensions (PAE)		40-bit
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)