Atom C3950 vs Core 2 Quad Q9400

Primary details

Comparing Core 2 Quad Q9400 and Atom C3950 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2211	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Series	no data	Intel Atom
Architecture codename	Yorkfield (2007−2009)	Goldmont (2016−2017)
Release date	August 2008 (16 years ago)	15 August 2017 (7 years ago)
Launch price (MSRP)	no data	$389

Detailed specifications

Core 2 Quad Q9400 and Atom C3950 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	4 (Quad-Core)	16 (Hexadeca-Core)
Threads	4	16
Base clock speed	2.66 GHz	1.7 GHz
Boost clock speed	2.67 GHz	2.2 GHz
Bus rate	1333 MHz	no data
Multiplier	no data	17
L1 cache	64K (per core)	896 KB
L2 cache	6 MB (shared)	16 MB
L3 cache	0 KB	16 MB
Chip lithography	45 nm	14 nm
Die size	2x 81 mm2	no data
Maximum core temperature	no data	78 °C
Maximum case temperature (TCase)	71 °C	no data
Number of transistors	456 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Quad Q9400 and Atom C3950 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	1 (Uniprocessor)
Socket	LGA775	FCBGA1310
Power consumption (TDP)	95 Watt	24 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q9400 and Atom C3950. You'll probably need this information if you require some particular technology.

AES-NI	-	+
Enhanced SpeedStep (EIST)	+	+
QuickAssist	no data	-
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	-
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	-	no data
FSB parity	-	no data
Status	Discontinued	Launched

Security technologies

Core 2 Quad Q9400 and Atom C3950 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 2 Quad Q9400 and Atom C3950 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q9400 and Atom C3950. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR4: 2400
Maximum memory size	no data	256 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	38.397 GB/s
ECC memory support	-	+

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q9400 and Atom C3950.

PCIe version	no data	3
PCI Express lanes	no data	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	2x10/2.5/1 GBE + 2x1 GBE

Pros & cons summary

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Physical cores	4	16
Threads	4	16
Chip lithography	45 nm	14 nm
Power consumption (TDP)	95 Watt	24 Watt

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Should you still have questions on choice between Core 2 Quad Q9400 and Atom C3950, ask them in Comments section, and we shall answer.

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