Intel Atom C3558 vs Intel Xeon E5540

Comparative analysis of Intel Atom C3558 and Intel Xeon E5540 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 Atom C3558

Intel Xeon E5540

Differences

Reasons to consider the Intel Atom C3558

Around 32% higher maximum core temperature: 100°C vs 76°C
A newer manufacturing process allows for a more powerful, yet cooler running processor: 14 nm vs 45 nm
Around 78% higher maximum memory size: 256 GB vs 144 GB
5x lower typical power consumption: 16 Watt vs 80 Watt

Maximum core temperature	100°C vs 76°C
Manufacturing process technology	14 nm vs 45 nm
Maximum memory size	256 GB vs 144 GB
Thermal Design Power (TDP)	16 Watt vs 80 Watt

Reasons to consider the Intel Xeon E5540

4 more threads: 8 vs 4
Around 27% higher clock speed: 2.80 GHz vs 2.20 GHz
Around 32% better performance in PassMark - Single thread mark: 1128 vs 856
2x better performance in PassMark - CPU mark: 4935 vs 2431

Specifications (specs)
Number of threads	8 vs 4
Maximum frequency	2.80 GHz vs 2.20 GHz
Max number of CPUs in a configuration	2 vs 1
Benchmarks
PassMark - Single thread mark	1128 vs 856
PassMark - CPU mark	4935 vs 2431

Compare benchmarks

CPU 1: Intel Atom C3558
CPU 2: Intel Xeon E5540

PassMark - Single thread mark

CPU 1

CPU 2

856

1128

PassMark - CPU mark

CPU 1

CPU 2

2431

4935

Name	Intel Atom C3558	Intel Xeon E5540
PassMark - Single thread mark	856	1128
PassMark - CPU mark	2431	4935
Geekbench 4 - Single Core		383
Geekbench 4 - Multi-Core		1596

Compare specifications (specs)

	Intel Atom C3558	Intel Xeon E5540
Essentials
Architecture codename	Denverton	Nehalem EP
Launch date	Q3'17	March 2009
Place in performance rating	2431	2450
Processor Number	C3558	E5540
Series	Intel® Atom™ Processor C Series	Legacy Intel® Xeon® Processors
Status	Launched	Launched
Vertical segment	Server	Server
Launch price (MSRP)		$30
Price now		$35
Value for money (0-100)		40.05
Performance
64 bit support
Base frequency	2.20 GHz	2.53 GHz
Manufacturing process technology	14 nm	45 nm
Maximum core temperature	100°C	76°C
Maximum frequency	2.20 GHz	2.80 GHz
Number of cores	4	4
Number of QPI Links	0	2
Number of threads	4	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)
Transistor count		731 million
VID voltage range		0.75V -1.35V
Memory
Max memory channels	2	3
Maximum memory size	256 GB	144 GB
Supported memory types	DDR4: 2133	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
Package Size	34 mm x 28 mm	42.5mm x 45mm
Sockets supported	FCBGA1310	FCLGA1366
Thermal Design Power (TDP)	16 Watt	80 Watt
Peripherals
Integrated LAN
Max number of PCIe lanes	12
Max number of SATA 6 Gb/s Ports	12
Number of USB ports	8
PCI Express revision	3
PCIe configurations	x2,x4,x8
Total number of SATA ports	12
USB revision	3
Security & Reliability
Execute Disable Bit (EDB)
Intel® OS Guard
Intel® Secure Key technology
Intel® Software Guard Extensions (Intel® SGX)
Secure Boot
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Integrated Intel® QuickAssist Technology
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Enhanced Intel SpeedStep® technology
Idle States
Intel 64
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)