Core 2 Quad Q8400s vs Celeron U3400

Primary details

Comparing Celeron U3400 and Core 2 Quad Q8400s processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Celeron	no data
Architecture codename	Westmere (2010−2011)	Yorkfield (2007−2009)
Release date	24 May 2010 (14 years ago)	19 April 2009 (15 years ago)

Detailed specifications

Celeron U3400 and Core 2 Quad Q8400s 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)	4 (Quad-Core)
Threads	2	4
Base clock speed	1.06 GHz	2.66 GHz
Boost clock speed	0.07 GHz	0.67 GHz
Bus type	DMI 1.0	no data
Bus rate	1 × 2.5 GT/s	1333 MHz
Multiplier	8	no data
L1 cache	128 KB	64 KB (per core)
L2 cache	512 KB	4 MB (shared)
L3 cache	2 MB	0 KB
Chip lithography	32 nm	45 nm
Die size	81 mm2	2x 82 mm2
Maximum core temperature	105 °C	no data
Maximum case temperature (TCase)	no data	76 °C
Number of transistors	382 Million	456 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	no data	0.85V-1.3625V

Compatibility

Information on Celeron U3400 and Core 2 Quad Q8400s 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
Socket	BGA1288	FCLGA775,LGA775
Power consumption (TDP)	18 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron U3400 and Core 2 Quad Q8400s. You'll probably need this information if you require some particular technology.

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
Status	Discontinued	Discontinued

Security technologies

Celeron U3400 and Core 2 Quad Q8400s technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron U3400 and Core 2 Quad Q8400s are enumerated here.

VT-d	-	no data
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron U3400 and Core 2 Quad Q8400s. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-800	DDR1, DDR2, DDR3
Maximum memory size	8 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	12.799 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for Previous Generation Intel® Processors	On certain motherboards (Chipset feature)
Clear Video	+	no data
Graphics max frequency	500 MHz	no data

Graphics interfaces

Available interfaces and connections of Celeron U3400 and Core 2 Quad Q8400s integrated GPUs.

Number of displays supported

2

no data

Peripherals

Specifications and connection of peripherals supported by Celeron U3400 and Core 2 Quad Q8400s.

PCIe version	2.0	2.0
PCI Express lanes	16	no data

Pros & cons summary

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Recency	24 May 2010	19 April 2009
Physical cores	2	4
Threads	2	4
Chip lithography	32 nm	45 nm
Power consumption (TDP)	18 Watt	65 Watt

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