Atom Z520PT vs Xeon X5670

Primary details

Comparing Xeon X5670 and Atom Z520PT processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1373	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.06	no data
Market segment	Server	Laptop
Series	Xeon (Desktop)	Intel Atom
Architecture codename	Westmere-EP (2010−2011)	Silverthorne (2008−2010)
Release date	16 March 2010 (14 years ago)	2 March 2009 (15 years ago)
Launch price (MSRP)	$67	no data
Current price	$44 (0.7x MSRP)	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon X5670 and Atom Z520PT basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	6 (Hexa-Core)	1 (Single-Core)
Threads	12	2
Base clock speed	2.93 GHz	1.33 GHz
Boost clock speed	3.33 GHz	0.03 GHz
Bus support	6400 MHz	533.33 MT/s
L1 cache	64 KB (per core)	56 KB
L2 cache	256 KB (per core)	512 KB (per core)
L3 cache	12 MB (shared)	0 KB
Chip lithography	32 nm	45 nm
Die size	239 mm2	24.18 mm27.8 mm × 3.1 mm
Maximum core temperature	81 °C	90 °C
Number of transistors	1,170 million	47 million
64 bit support	+	-
Windows 11 compatibility	-	-
Unlocked multiplier	No	No
VID voltage range	no data	0.9V-1.1V

Compatibility

Information on Xeon X5670 and Atom Z520PT compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	2	1 (Uniprocessor)
Socket	FCLGA1366,LGA1366	FCBGA437,PBGA441
Power consumption (TDP)	95 Watt	2.2 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon X5670 and Atom Z520PT. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	Intel® SSE2, Intel® SSE3, Intel® SSSE3
AES-NI	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	1.0	-
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	-	+
Demand Based Switching	+	-
PAE	40 Bit	no data
FSB parity	no data	-
Status	Discontinued	Discontinued

Security technologies

Xeon X5670 and Atom Z520PT technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon X5670 and Atom Z520PT are enumerated here.

VT-d	+	-
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon X5670 and Atom Z520PT. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	no data
Maximum memory size	288 GB	no data
Max memory channels	3	no data
Maximum memory bandwidth	32 GB/s	no data
ECC memory support	+	no data

Peripherals

Specifications and connection of peripherals supported by Xeon X5670 and Atom Z520PT.

PCIe version

2.0

no data

Pros & cons summary

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Recency	16 March 2010	2 March 2009
Physical cores	6	1
Threads	12	2
Chip lithography	32 nm	45 nm
Power consumption (TDP)	95 Watt	2 Watt

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