Intel Xeon E7540 vs Intel Atom C3538

Comparative analysis of Intel Xeon E7540 and Intel Atom C3538 processors for all known characteristics in the following categories: Essentials, Performance, Compatibility, Security & Reliability, Advanced Technologies, Virtualization, Memory, Peripherals. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

Intel Xeon E7540

Intel Atom C3538

Differences

Reasons to consider the Intel Xeon E7540

2 more cores, run more applications at once: 6 vs 4
8 more threads: 12 vs 4
Around 8% higher clock speed: 2.27 GHz vs 2.10 GHz
Around 22% better performance in PassMark - Single thread mark: 911 vs 744
5x better performance in PassMark - CPU mark: 9409 vs 1889

Specifications (specs)
Number of cores	6 vs 4
Number of threads	12 vs 4
Maximum frequency	2.27 GHz vs 2.10 GHz
Benchmarks
PassMark - Single thread mark	911 vs 744
PassMark - CPU mark	9409 vs 1889

Reasons to consider the Intel Atom C3538

Around 56% higher maximum core temperature: 100°C vs 64°C
A newer manufacturing process allows for a more powerful, yet cooler running processor: 14 nm vs 45 nm
7x lower typical power consumption: 15 Watt vs 105 Watt

Maximum core temperature	100°C vs 64°C
Manufacturing process technology	14 nm vs 45 nm
Thermal Design Power (TDP)	15 Watt vs 105 Watt

Compare benchmarks

CPU 1: Intel Xeon E7540
CPU 2: Intel Atom C3538

PassMark - Single thread mark

CPU 1

CPU 2

911

744

PassMark - CPU mark

CPU 1

CPU 2

9409

1889

Name	Intel Xeon E7540	Intel Atom C3538
PassMark - Single thread mark	911	744
PassMark - CPU mark	9409	1889
Geekbench 4 - Single Core		1287
Geekbench 4 - Multi-Core		3460

Compare specifications (specs)

	Intel Xeon E7540	Intel Atom C3538
Essentials
Architecture codename	Nehalem EX	Denverton
Launch date	Q1'10	Q3'17
Place in performance rating	2009	2010
Processor Number	E7540	C3538
Series	Legacy Intel Xeon Processors	Intel® Atom™ Processor C Series
Vertical segment	Server	Server
Status		Launched
Performance
Base frequency	2.00 GHz	2.10 GHz
Bus Speed	6.4 GT/s
L3 cache	18 MB L3 Cache
Manufacturing process technology	45 nm	14 nm
Maximum core temperature	64°C	100°C
Maximum frequency	2.27 GHz	2.10 GHz
Number of cores	6	4
Number of threads	12	4
64 bit support
Number of QPI Links		0
Number of Ultra Path Interconnect (UPI) Links		0
Compatibility
Sockets supported	FCLGA1567	FCBGA1310
Thermal Design Power (TDP)	105 Watt	15 Watt
Low Halogen Options Available
Max number of CPUs in a configuration		1
Package Size		34 mm x 28 mm
Security & Reliability
Execute Disable Bit (EDB)
Intel® OS Guard
Intel® Secure Key technology
Intel® Software Guard Extensions (Intel® SGX)
Secure Boot
Advanced Technologies
Enhanced Intel SpeedStep® technology
Intel 64
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Integrated Intel® QuickAssist Technology
Intel® AES New Instructions
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® VT-x with Extended Page Tables (EPT)
Intel® Virtualization Technology for Directed I/O (VT-d)
Memory
Max memory channels		2
Maximum memory size		256 GB
Supported memory types		DDR4: 2133
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