Ryzen 9 7945HX3D vs i9-9900X

Primary details

Comparing Core i9-9900X and Ryzen 9 7945HX3D processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	533	96
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	4.93	no data
Market segment	Desktop processor	Laptop
Series	Intel Core i9	AMD Dragon Range (Zen 4, Ryzen 7045)
Power efficiency	7.89	62.84
Architecture codename	Skylake (server) (2017−2018)	Dragon Range-HX (Zen 4) (2023−2024)
Release date	19 October 2018 (6 years ago)	27 July 2023 (1 year ago)
Launch price (MSRP)	$989	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i9-9900X and Ryzen 9 7945HX3D 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	10 (Deca-Core)	16 (Hexadeca-Core)
Threads	20	32
Base clock speed	3.5 GHz	2.3 GHz
Boost clock speed	4.5 GHz	5.4 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	35	no data
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	1 MB (per core)	1 MB (per core)
L3 cache	19.25 MB (shared)	128 MB (shared)
Chip lithography	14 nm	5 nm
Die size	no data	2x 71 mm2
Maximum core temperature	92 °C	89 °C
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	17,840 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	+

Compatibility

Information on Core i9-9900X and Ryzen 9 7945HX3D 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	FCLGA2066	FL1
Power consumption (TDP)	165 Watt	55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-9900X and Ryzen 9 7945HX3D. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512	no data
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Turbo Boost Max 3.0	+	no data
Precision Boost 2	no data	+

Security technologies

Core i9-9900X and Ryzen 9 7945HX3D technologies aimed at improving security, for example, by protecting against hacks.

EDB

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-9900X and Ryzen 9 7945HX3D are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-9900X and Ryzen 9 7945HX3D. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR5-5200
Maximum memory size	128 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	85.33 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

AMD Radeon 610M (400 - 2200 MHz)

Peripherals

Specifications and connection of peripherals supported by Core i9-9900X and Ryzen 9 7945HX3D.

PCIe version	3.0	5.0
PCI Express lanes	44	28

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	13.76	36.52
Recency	19 October 2018	27 July 2023
Physical cores	10	16
Threads	20	32
Chip lithography	14 nm	5 nm
Power consumption (TDP)	165 Watt	55 Watt

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Should you still have questions on choice between Core i9-9900X and Ryzen 9 7945HX3D, ask them in Comments section, and we shall answer.

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