Intel Core 2 Quad Q9400: specs and benchmarks

Summary

Intel started Intel Core 2 Quad Q9400 sales on August 2008. This is Yorkfield architecture desktop processor primarily aimed at office systems. It has 4 cores and 4 threads, and is based on 45 nm manufacturing technology, with a maximum frequency of 2666 MHz and a locked multiplier.

Compatibility-wise, this is LGA775 processor with a TDP of 95 Watt and a maximum temperature of 71 °C. It supports DDR1, DDR2, DDR3 memory.

General info

Of Core 2 Quad Q9400 processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in performance rating	1876
Value for money	3.51
Market segment	Desktop processor
Architecture codename	Yorkfield (2007−2009)
Release date	August 2008 (14 years ago)
Current price	$50	of 14999 (Xeon Platinum 9282)

Technical specs

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores	4 (Quad-Core)
Threads	4
Base clock speed	2.66 GHz	of 4.7 (FX-9590)
Boost clock speed	2.67 GHz	of 5.5 (Core i9-12900KS)
L1 cache	64K (per core)	of 1536 (EPYC Embedded 3401)
L2 cache	6 MB (shared)	of 12 (Core 2 Quad Q9550)
L3 cache	0 KB	of 32768 (Ryzen Threadripper 1998)
Chip lithography	45 nm	of 5 (Apple M1)
Die size	2x 81 mm2
Maximum core temperature	71 °C	of 110 (Atom x7-E3950)
Maximum case temperature (TCase)	71 °C	of 105 (Core i7-5950HQ)
Number of transistors	456 million	of 57000 (Apple M1 Max)
64 bit support	+
Windows 11 compatibility	-
Unlocked multiplier	-
VID voltage range	0.85V-1.3625V

Compatibility

Information on Core 2 Quad Q9400 compatibility with other computer components and devices: 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	of 8 (Opteron 842)
Socket	LGA775
Thermal design power (TDP)	95 Watt	of 400 (Xeon Platinum 9282)

Technologies and extensions

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

AES-NI	-
Enhanced SpeedStep (EIST)	+
Enhanced SpeedStep (EIST)	+
Turbo Boost Technology	-
Hyper-Threading Technology	-
Idle States	+
Thermal Monitoring	+
Demand Based Switching	-
FSB parity	-

Security technologies

Processor technologies aimed at improving security, for example, by protecting against hacks.

TXT	+
EDB	+

Virtualization technologies

Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.

VT-d	+
VT-x	+

Memory specs

Types, maximum amount and channel number of RAM supported by Core 2 Quad Q9400's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory types

DDR1, DDR2, DDR3

of 4800 (Ryzen 9 6980HX)

Benchmark performance

Single-core and multi-core benchmark results of Core 2 Quad Q9400. Overall benchmark performance is measured in points in 0-100 range, higher is better.

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Overall 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.

Relative perfomance

Overall Core 2 Quad Q9400 performance compared to nearest competitors among desktop CPUs.

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