Ryzen 7 8840HX vs i3-8121U

Primary details

Comparing processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1823	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i3	no data
Power efficiency	9.39	no data
Designer	Intel	AMD
Manufacturer	Intel	TSMC
Architecture codename	Coffee Lake-U (2018−2019)	Dragon Range (2025)
Release date	5 May 2018 (6 years ago)	23 April 2025 (recently)

Detailed specifications

Core i3-8121U and Ryzen 7 8840HX 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	2 (Dual-core)	12 (Dodeca-Core)
Threads	4	24
Base clock speed	2.2 GHz	2.9 GHz
Boost clock speed	3.2 GHz	5.1 GHz
Bus type	OPI	no data
Bus rate	4 GT/s	no data
Multiplier	22	no data
L1 cache	64K (per core)	64 KB (per core)
L2 cache	256K (per core)	1 MB (per core)
L3 cache	4 MB (shared)	64 MB (shared)
Chip lithography	10 nm	5 nm
Die size	123 mm2	2x 71 mm2
Maximum core temperature	105 °C	no data
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	13,140 million
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	-	+

Compatibility

Information on Core i3-8121U and Ryzen 7 8840HX 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	Intel BGA1440	FL1
Power consumption (TDP)	15 Watt	55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i3-8121U and Ryzen 7 8840HX. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512	no data
AES-NI	+	+
AVX	+	+
vPro	-	no data
Enhanced SpeedStep (EIST)	+	no data
QuickAssist	-	no data
Speed Shift	+	no data
My WiFi	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Smart Response	+	no data
Demand Based Switching	-	no data
HD Audio	+	no data
RST	+	no data
Precision Boost 2	no data	+

Security technologies

Core i3-8121U and Ryzen 7 8840HX technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
Secure Key	+	no data
MPX	+	-
SGX	-	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i3-8121U and Ryzen 7 8840HX are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i3-8121U and Ryzen 7 8840HX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR5
Maximum memory size	32 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	38.397 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

Iris Pro Plus

AMD Radeon 610M

Peripherals

Specifications and connection of peripherals supported by Core i3-8121U and Ryzen 7 8840HX.

PCIe version	3.0	5.0
PCI Express lanes	16	28

Pros & cons summary

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Recency	5 May 2018	23 April 2025
Physical cores	2	12
Threads	4	24
Chip lithography	10 nm	5 nm
Power consumption (TDP)	15 Watt	55 Watt

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