Intel Atom C3958 vs Intel Xeon W3520

Comparative analysis of Intel Atom C3958 and Intel Xeon W3520 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, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), CompuBench 1.5 Desktop - Video Composition (Frames/s).

Intel Atom C3958

Intel Xeon W3520

Differences

Reasons to consider the Intel Atom C3958

12 more cores, run more applications at once: 16 vs 4
8 more threads: 16 vs 8
Around 47% higher maximum core temperature: 100°C vs 67.9°C
A newer manufacturing process allows for a more powerful, yet cooler running processor: 14 nm vs 45 nm
10.7x more maximum memory size: 256 GB vs 24 GB
4.2x lower typical power consumption: 31 Watt vs 130 Watt
Around 46% better performance in PassMark - CPU mark: 4281 vs 2937

Specifications (specs)
Number of cores	16 vs 4
Number of threads	16 vs 8
Maximum core temperature	100°C vs 67.9°C
Manufacturing process technology	14 nm vs 45 nm
Maximum memory size	256 GB vs 24 GB
Thermal Design Power (TDP)	31 Watt vs 130 Watt
Benchmarks
PassMark - CPU mark	4281 vs 2937

Reasons to consider the Intel Xeon W3520

Around 47% higher clock speed: 2.93 GHz vs 2.00 GHz
2.5x better performance in PassMark - Single thread mark: 1272 vs 514

Specifications (specs)
Maximum frequency	2.93 GHz vs 2.00 GHz
Benchmarks
PassMark - Single thread mark	1272 vs 514

Compare benchmarks

CPU 1: Intel Atom C3958
CPU 2: Intel Xeon W3520

PassMark - Single thread mark

CPU 1

CPU 2

514

1272

PassMark - CPU mark

CPU 1

CPU 2

4281

2937

Name	Intel Atom C3958	Intel Xeon W3520
PassMark - Single thread mark	514	1272
PassMark - CPU mark	4281	2937
Geekbench 4 - Single Core		479
Geekbench 4 - Multi-Core		1908
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		0.887
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		47.416
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.281
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		4.1
CompuBench 1.5 Desktop - Video Composition (Frames/s)		1.482

Compare specifications (specs)

	Intel Atom C3958	Intel Xeon W3520
Essentials
Architecture codename	Denverton	Bloomfield
Launch date	Q3'17	March 2009
Place in performance rating	2701	2708
Processor Number	C3958	W3520
Series	Intel® Atom™ Processor C Series	Legacy Intel® Xeon® Processors
Status	Launched	Discontinued
Vertical segment	Server	Server
Launch price (MSRP)		$404
Price now		$28.75
Value for money (0-100)		51.83
Performance
64 bit support
Base frequency	2.00 GHz	2.66 GHz
Manufacturing process technology	14 nm	45 nm
Maximum core temperature	100°C	67.9°C
Maximum frequency	2.00 GHz	2.93 GHz
Number of cores	16	4
Number of QPI Links	0	1
Number of threads	16	8
Number of Ultra Path Interconnect (UPI) Links	0
Bus Speed		4.8 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		0.800V-1.375V
Memory
Max memory channels	2	3
Maximum memory size	256 GB	24 GB
Supported memory types	DDR4: 2400	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	1
Package Size	34 mm x 28 mm	42.5mm x 45.0mm
Sockets supported	FCBGA1310	FCLGA1366
Thermal Design Power (TDP)	31 Watt	130 Watt
Peripherals
Integrated LAN
Max number of PCIe lanes	16
Max number of SATA 6 Gb/s Ports	16
Number of USB ports	8
PCI Express revision	3
PCIe configurations	x2,x4,x8
Total number of SATA ports	16
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
Instruction set extensions		Intel® SSE4.2
Intel 64
Intel® Demand Based Switching
Physical Address Extensions (PAE)		36-bit
Thermal Monitoring
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)