Intel Atom Z520PT vs Intel Xeon E5502

Comparative analysis of Intel Atom Z520PT and Intel Xeon E5502 processors for all known characteristics in the following categories: Essentials, Performance, Compatibility, Security & Reliability, Advanced Technologies, Virtualization, Memory. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark.

Intel Atom Z520PT

Intel Xeon E5502

Differences

Reasons to consider the Intel Atom Z520PT

Around 18% higher maximum core temperature: 90°C vs 76°C
40x lower typical power consumption: 2.2 Watt vs 80 Watt

Maximum core temperature	90°C vs 76°C
Thermal Design Power (TDP)	2.2 Watt vs 80 Watt

Reasons to consider the Intel Xeon E5502

1 more cores, run more applications at once: 2 vs 1
Around 40% higher clock speed: 1.86 GHz vs 1.33 GHz
2x more L1 cache, more data can be stored in the L1 cache for quick access later

Number of cores	2 vs 1
Maximum frequency	1.86 GHz vs 1.33 GHz
L1 cache	64 KB (per core) vs 64 KB (per core)
Max number of CPUs in a configuration	2 vs 1

Compare benchmarks

CPU 1: Intel Atom Z520PT
CPU 2: Intel Xeon E5502

Name	Intel Atom Z520PT	Intel Xeon E5502
PassMark - Single thread mark		825
PassMark - CPU mark		1853

Compare specifications (specs)

	Intel Atom Z520PT	Intel Xeon E5502
Essentials
Architecture codename	Silverthorne	Nehalem EP
Launch date	March 2009	March 2009
Place in performance rating	not rated	2481
Processor Number	Z520PT	E5502
Series	Legacy Intel Atom® Processors	Legacy Intel® Xeon® Processors
Status	Discontinued	Launched
Vertical segment	Mobile	Server
Launch price (MSRP)		$95
Price now		$95
Value for money (0-100)		4.27
Performance
Base frequency	1.33 GHz	1.86 GHz
Bus Speed	533 MHz FSB	4.8 GT/s QPI
Die size	26 mm2	263 mm
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	512 KB (per core)	256 KB (per core)
Manufacturing process technology	45 nm	45 nm
Maximum core temperature	90°C	76°C
Maximum frequency	1.33 GHz	1.86 GHz
Number of cores	1	2
Transistor count	47 million	731 million
VID voltage range	0.9V-1.1V	0.75V -1.35V
64 bit support
L3 cache		4096 KB (shared)
Number of QPI Links		2
Number of threads		2
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	2
Package Size	22mm x 22mm	42.5mm x 45mm
Sockets supported	FCBGA437	FCLGA1366
Thermal Design Power (TDP)	2.2 Watt	80 Watt
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
FSB parity
Idle States
Instruction set extensions	Intel® SSE2, Intel® SSE3, Intel® SSSE3
Intel 64
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Thermal Monitoring
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)
Memory
ECC memory support
Max memory channels		3
Maximum memory bandwidth		19.2 GB/s
Maximum memory size		144 GB
Supported memory types		DDR3 800