Intel Xeon L5508 vs Intel Xeon L5518

Comparative analysis of Intel Xeon L5508 and Intel Xeon L5518 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Security & Reliability, Advanced Technologies, Virtualization.

Intel Xeon L5508

Intel Xeon L5518

Differences

Reasons to consider the Intel Xeon L5508

Around 58% lower typical power consumption: 38 Watt vs 60 Watt

Thermal Design Power (TDP)	38 Watt vs 60 Watt

Reasons to consider the Intel Xeon L5518

2 more cores, run more applications at once: 4 vs 2
4 more threads: 8 vs 4
2x more L1 cache, more data can be stored in the L1 cache for quick access later
2x more L2 cache, more data can be stored in the L2 cache for quick access later

Number of cores	4 vs 2
Number of threads	8 vs 4
L1 cache	64 KB (per core) vs 64 KB (per core)
L2 cache	256 KB (per core) vs 256 KB (per core)

Compare specifications (specs)

	Intel Xeon L5508	Intel Xeon L5518
Essentials
Architecture codename	Nehalem EP	Nehalem EP
Launch date	March 2009	March 2009
Place in performance rating	not rated	not rated
Processor Number	L5508	L5518
Series	Legacy Intel® Xeon® Processors	Legacy Intel® Xeon® Processors
Status	Launched	Launched
Vertical segment	Embedded	Embedded
Performance
64 bit support
Base frequency	2.00 GHz	2.13 GHz
Bus Speed	5.86 GT/s QPI	5.86 GT/s QPI
Die size	263 mm2	263 mm2
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	256 KB (per core)	256 KB (per core)
L3 cache	8192 KB (shared)	8192 KB (shared)
Manufacturing process technology	45 nm	45 nm
Maximum core temperature	85°C	85°C
Maximum frequency	2.40 GHz	2.40 GHz
Number of cores	2	4
Number of QPI Links	2	2
Number of threads	4	8
Transistor count	731 million	731 million
VID voltage range	0.75V -1.35V	0.75V -1.35V
Memory
ECC memory support
Max memory channels	3	3
Maximum memory bandwidth	25.6 GB/s	25.6 GB/s
Maximum memory size	144 GB	144 GB
Supported memory types	DDR3 800/1066	DDR3 800/1066
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	2	2
Package Size	42.5mm x 45mm	42.5mm x 45mm
Sockets supported	FCLGA1366	FCLGA1366
Thermal Design Power (TDP)	38 Watt	60 Watt
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Intel 64
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Physical Address Extensions (PAE)	40-bit	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)