i9-14900KF vs Ryzen 9 3900X

Primary details

Comparing Ryzen 9 3900X and Core i9-14900KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	274	82
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	21.70	66.43
Market segment	Desktop processor	Desktop processor
Series	AMD Ryzen 9	no data
Power efficiency	15.54	28.27
Architecture codename	Matisse (Zen 2) (2019−2020)	Raptor Lake-R (2023−2024)
Release date	7 July 2019 (5 years ago)	17 October 2023 (1 year ago)
Launch price (MSRP)	$499	$564

Cost-effectiveness evaluation

Performance per price, higher is better.

i9-14900KF has 206% better value for money than Ryzen 9 3900X.

Detailed specifications

Ryzen 9 3900X 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	12 (Dodeca-Core)	24 (Tetracosa-Core)
Performance-cores	no data	8
Efficient-cores	no data	16
Threads	24	32
Base clock speed	3.8 GHz	3.2 GHz
Boost clock speed	4.6 GHz	5.8 GHz
L1 cache	96K (per core)	80 KB (per core)
L2 cache	512K (per core)	2 MB (per core)
L3 cache	64 MB	36 MB (shared)
Chip lithography	7 nm, 12 nm	Intel 7 nm
Die size	no data	257 mm2
Maximum core temperature	95 °C	100 °C
Number of transistors	19,200 million	no data
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	+	+

Compatibility

Information on Ryzen 9 3900X 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 (Uniprocessor)	1
Socket	AM4	FCLGA1700
Power consumption (TDP)	125 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3900X 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)	no data	+
Speed Shift	no data	+
Turbo Boost Technology	no data	2.0
Hyper-Threading Technology	no data	+
TSX	-	+
Idle States	no data	+
Thermal Monitoring	-	+
Turbo Boost Max 3.0	no data	+
Precision Boost 2	+	no data
Deep Learning Boost	-	+

Security technologies

Ryzen 9 3900X and Core i9-14900KF technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3900X and Core i9-14900KF are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900X and Core i9-14900KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Dual-channel	DDR5-5600, DDR4-3200
Maximum memory size	128 GB	192 GB
Max memory channels	2	2
Maximum memory bandwidth	51.196 GB/s	89.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

-

N/A

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3900X 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.

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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.

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Pros & cons summary

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Performance score	20.53	37.34
Recency	7 July 2019	17 October 2023
Physical cores	12	24
Threads	24	32

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Should you still have questions on choice between Ryzen 9 3900X and Core i9-14900KF, ask them in Comments section, and we shall answer.

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