Ryzen 9 7840HX vs Ryzen 9 7900X

Primary details

Comparing Ryzen 9 7900X and Ryzen 9 7840HX processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	121	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Laptop
Series	no data	AMD Dragon Range (Zen 4, Ryzen 7045)
Power efficiency	18.12	no data
Architecture codename	Raphael (Zen4) (2022−2023)	Dragon Range-HX (Zen 4) (2023−2024)
Release date	27 September 2022 (2 years ago)	17 January 2024 (less than a year ago)

Detailed specifications

Ryzen 9 7900X and Ryzen 9 7840HX 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)	12 (Dodeca-Core)
Threads	24	24
Base clock speed	4.7 GHz	2.9 GHz
Boost clock speed	5.6 GHz	5.1 GHz
L1 cache	64K (per core)	768 KB
L2 cache	1 MB (per core)	12 MB
L3 cache	64 MB (shared)	64 MB
Chip lithography	5 nm	5 nm
Die size	2x 70 (CCD) mm2 + 122 (I/O) mm2	no data
Maximum core temperature	95 °C	100 °C
Maximum case temperature (TCase)	47 °C	no data
Number of transistors	CCD: 6,5 Mrd + IOD: 3,4 Mrd Million	9900 Million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Ryzen 9 7900X and Ryzen 9 7840HX 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	AM5	FL1
Power consumption (TDP)	170 Watt	55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 7900X and Ryzen 9 7840HX. You'll probably need this information if you require some particular technology.

Instruction set extensions	5 nm (CCD), 6 nm (I/O) nm, 0.650 - 1.475V	MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME
AES-NI	+	+
FMA	-	+
AVX	+	+
Precision Boost 2	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 7900X and Ryzen 9 7840HX are enumerated here.

AMD-V

+

-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7900X and Ryzen 9 7840HX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR5-5200

DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare

AMD Radeon Graphics (Ryzen 7000)

AMD Radeon 610M

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 7900X and Ryzen 9 7840HX.

PCIe version	5.0	no data
PCI Express lanes	24	no data

Pros & cons summary

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Integrated graphics card	4.42	2.85
Recency	27 September 2022	17 January 2024
Power consumption (TDP)	170 Watt	55 Watt

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Should you still have questions on choice between Ryzen 9 7900X and Ryzen 9 7840HX, ask them in Comments section, and we shall answer.

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