Core i9-14900KF vs Core 2 Quad Q9400

Primary details

Comparing Core 2 Quad Q9400 and Core i9-14900KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2235	82
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	66.31
Market segment	Desktop processor	Desktop processor
Power efficiency	1.33	28.32
Architecture codename	Yorkfield (2007−2009)	Raptor Lake-R (2023−2024)
Release date	August 2008 (16 years ago)	17 October 2023 (1 year ago)
Launch price (MSRP)	no data	$564

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core 2 Quad Q9400 and Core i9-14900KF 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)	24 (Tetracosa-Core)
Threads	4	32
Base clock speed	2.66 GHz	3.2 GHz
Boost clock speed	2.67 GHz	5.8 GHz
Bus rate	1333 MHz	no data
L1 cache	64K (per core)	80 KB (per core)
L2 cache	6 MB (shared)	2 MB (per core)
L3 cache	0 KB	36 MB (shared)
Chip lithography	45 nm	Intel 7 nm
Die size	2x 81 mm2	257 mm2
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	71 °C	no data
Number of transistors	456 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Quad Q9400 and Core i9-14900KF 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
Socket	LGA775	FCLGA1700
Power consumption (TDP)	95 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q9400 and Core i9-14900KF. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	+
TSX	-	+
Idle States	+	+
Thermal Monitoring	+	+
Demand Based Switching	-	no data
Turbo Boost Max 3.0	no data	+
FSB parity	-	no data
Deep Learning Boost	-	+

Security technologies

Core 2 Quad Q9400 and Core i9-14900KF technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	no data	+
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q9400 and Core i9-14900KF 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 Core i9-14900KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR5-5600, DDR4-3200
Maximum memory size	no data	192 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	89.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

N/A

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q9400 and Core i9-14900KF.

PCIe version	no data	5.0 and 4.0
PCI Express lanes	no data	16

Synthetic benchmark performance

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

---

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.

---

Pros & cons summary

---

Performance score	1.39	38.82
Physical cores	4	24
Threads	4	32
Power consumption (TDP)	95 Watt	125 Watt

---

Should you still have questions on choice between Core 2 Quad Q9400 and Core i9-14900KF, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---