Atom C3958 vs i5-450M

Primary details

Comparing Core i5-450M and Atom C3958 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2637	1762
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	0.53
Market segment	Laptop	Server
Series	Intel Core i5	Intel Atom
Power efficiency	2.11	7.54
Architecture codename	Arrandale (2010−2011)	Goldmont (2016−2017)
Release date	26 September 2010 (14 years ago)	15 August 2017 (7 years ago)
Launch price (MSRP)	$32	$449

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-450M and Atom C3958 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)	16 (Hexadeca-Core)
Threads	4	16
Base clock speed	2.4 GHz	2 GHz
Boost clock speed	2.66 GHz	2 GHz
Bus type	DMI 1.0	no data
Bus rate	1 × 2.5 GT/s	no data
Multiplier	18	20
L1 cache	64K (per core)	896 KB
L2 cache	256K (per core)	16 MB
L3 cache	3 MB (shared)	16 MB
Chip lithography	32 nm	14 nm
Die size	81+114 mm2	no data
Maximum core temperature	105 °C	83 °C
Number of transistors	382+177 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i5-450M and Atom C3958 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	FCBGA1310
Power consumption (TDP)	35 Watt	31 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-450M and Atom C3958. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	no data
AES-NI	-	+
FMA	+	-
Enhanced SpeedStep (EIST)	+	+
QuickAssist	no data	+
Turbo Boost Technology	+	-
Hyper-Threading Technology	+	-
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
PAE	36 Bit	no data
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Core i5-450M and Atom C3958 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	+
Secure Boot	no data	+
Secure Key	no data	+
SGX	no data	-
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-450M and Atom C3958 are enumerated here.

VT-d	-	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-450M and Atom C3958. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4: 2400
Maximum memory size	8 GB	256 GB
Max memory channels	2	2
Maximum memory bandwidth	17.051 GB/s	38.397 GB/s
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics for Previous Generation Intel Processors	no data
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	766 MHz	no data

Graphics interfaces

Available interfaces and connections of Core i5-450M and Atom C3958 integrated GPUs.

Number of displays supported

2

no data

Peripherals

Specifications and connection of peripherals supported by Core i5-450M and Atom C3958.

PCIe version	2.0	3
PCI Express lanes	16	16
USB revision	no data	3
Total number of SATA ports	no data	16
Max number of SATA 6 Gb/s Ports	no data	16
Number of USB ports	no data	8
Integrated LAN	no data	4x10/2.5/1 GBE

Synthetic benchmark performance

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

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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.

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Pros & cons summary

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Performance score	0.78	2.47
Recency	26 September 2010	15 August 2017
Physical cores	2	16
Threads	4	16
Chip lithography	32 nm	14 nm
Power consumption (TDP)	35 Watt	31 Watt

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Should you still have questions on choice between Core i5-450M and Atom C3958, ask them in Comments section, and we shall answer.

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