Atom Z520 vs i3-370M

Place in the ranking	2675	3387
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i3	Intel Atom
Power efficiency	1.97	3.79
Architecture codename	Arrandale (2010−2011)	Silverthorne (2008−2010)
Release date	20 June 2010 (14 years ago)	2 April 2008 (16 years ago)
Launch price (MSRP)	$245	$65

Detailed specifications

Core i3-370M and Atom Z520 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	2 (Dual-core)	1 (Single-Core)
Threads	4	2
Base clock speed	2.4 GHz	1.33 GHz
Boost clock speed	2.4 GHz	0.03 GHz
Bus type	DMI 1.0	FSB
Bus rate	1 × 2.5 GT/s	533.33 MT/s
Multiplier	18	10
L1 cache	64K (per core)	56 KB
L2 cache	256K (per core)	512 KB
L3 cache	3 MB (shared)	0 KB
Chip lithography	32 nm	45 nm
Die size	81+114 mm²	24.18 mm²
Maximum core temperature	90 °C for rPGA, 105 °C for BGA	90 °C
Number of transistors	382+177 Million	47 Million
64 bit support	+	-
Windows 11 compatibility	-	-
VID voltage range	no data	0.75-1.1V

Compatibility

Information on Core i3-370M and Atom Z520 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	1 (Uniprocessor)	1 (Uniprocessor)
Socket	PGA988	PBGA441
Power consumption (TDP)	35 Watt	2 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i3-370M and Atom Z520. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	Intel® SSE2, Intel® SSE3, Intel® SSSE3
FMA	+	-
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
Demand Based Switching	no data	+
PAE	36 Bit	no data
FDI	+	no data
Fast Memory Access	+	no data
FSB parity	no data	-

Security technologies

Core i3-370M and Atom Z520 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i3-370M and Atom Z520 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i3-370M and Atom Z520. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	no data
Maximum memory size	8 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	17.051 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics for Previous Generation Intel Processors	-
Clear Video	+	-
Clear Video HD	+	-
Graphics max frequency	667 MHz	-

Graphics interfaces

Available interfaces and connections of Core i3-370M and Atom Z520 integrated GPUs.

Number of displays supported

Peripherals

Specifications and connection of peripherals supported by Core i3-370M and Atom Z520.

PCIe version	2.0	no data
PCI Express lanes	16	no data

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

i3-370M 0.73
+813%

Atom Z520 0.08

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

i3-370M 1156
+848%

Atom Z520 122

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

i3-370M 2690
+499%

Atom Z520 449

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

i3-370M 6204
+800%

Atom Z520 690

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

i3-370M 2578
+559%

Atom Z520 391

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

i3-370M 21.2
+590%

Atom Z520 146.28

Gaming performance

Pros & cons summary

Performance score	0.73	0.08
Recency	20 June 2010	2 April 2008
Physical cores	2	1
Threads	4	2
Chip lithography	32 nm	45 nm
Power consumption (TDP)	35 Watt	2 Watt

i3-370M has a 812.5% higher aggregate performance score, an age advantage of 2 years, 100% more physical cores and 100% more threads, and a 40.6% more advanced lithography process.

Atom Z520, on the other hand, has 1650% lower power consumption.

The Core i3-370M is our recommended choice as it beats the Atom Z520 in performance tests.

Should you still have questions on choice between Core i3-370M and Atom Z520, ask them in Comments section, and we shall answer.