Xeon D-1813NT vs Core 2 Quad Q8400s

Primary details

Comparing Core 2 Quad Q8400s and Xeon D-1813NT processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	1237
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Power efficiency	no data	10.97
Architecture codename	Yorkfield (2007−2009)	no data
Release date	19 April 2009 (15 years ago)	1 October 2023 (1 year ago)

Detailed specifications

Core 2 Quad Q8400s and Xeon D-1813NT 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)	4 (Quad-Core)
Threads	4	8
Base clock speed	2.66 GHz	2.2 GHz
Boost clock speed	0.67 GHz	2.4 GHz
Bus rate	1333 MHz	no data
L1 cache	64 KB (per core)	no data
L2 cache	4 MB (shared)	no data
L3 cache	0 KB	10240 KB
Chip lithography	45 nm	no data
Die size	2x 82 mm2	no data
Maximum case temperature (TCase)	76 °C	no data
Number of transistors	456 million	no data
64 bit support	+	+
Windows 11 compatibility	-	no data
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Quad Q8400s and Xeon D-1813NT 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	no data
Socket	FCLGA775,LGA775	FCBGA2227
Power consumption (TDP)	65 Watt	42 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400s and Xeon D-1813NT. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® AVX-512
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
Deep Learning Boost	-	+

Security technologies

Core 2 Quad Q8400s and Xeon D-1813NT technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+
SGX	no data	Yes with Intel® SPS

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q8400s and Xeon D-1813NT are enumerated here.

VT-d	no data	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400s and Xeon D-1813NT. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR4
Maximum memory size	no data	256 GB
Max memory channels	no data	2
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

no data

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400s and Xeon D-1813NT.

PCIe version	2.0	4.0
PCI Express lanes	no data	16
USB revision	no data	3.0
Max number of SATA 6 Gb/s Ports	no data	24
Number of USB ports	no data	4
Integrated LAN	no data	+

Pros & cons summary

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Recency	19 April 2009	1 October 2023
Threads	4	8
Power consumption (TDP)	65 Watt	42 Watt

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Should you still have questions on choice between Core 2 Quad Q8400s and Xeon D-1813NT, ask them in Comments section, and we shall answer.

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