Ryzen 5 PRO 8645HS vs i9-12900KF

Primary details

Comparing Core i9-12900KF and Ryzen 5 PRO 8645HS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	188	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	36.84	no data
Market segment	Desktop processor	Server
Series	Intel Core i9	no data
Power efficiency	19.59	no data
Architecture codename	Alder Lake, Golden Cove, Gracemont (2021)	Hawk Point (2024)
Release date	4 November 2021 (3 years ago)	16 April 2024 (less than a year ago)
Launch price (MSRP)	$564	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i9-12900KF and Ryzen 5 PRO 8645HS 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	16 (Hexadeca-Core)	6 (Hexa-Core)
Threads	24	12
Base clock speed	3.2 GHz	4.3 GHz
Boost clock speed	5.2 GHz	5 GHz
Bus type	DMI 4.0	no data
Bus rate	8 × 16 GT/s	no data
Multiplier	32	no data
L1 cache	80K (per core)	64 KB (per core)
L2 cache	1.25 MB (per core)	1 MB (per core)
L3 cache	30 MB (shared)	16 MB (shared)
Chip lithography	Intel 7 nm	4 nm
Die size	215.25 mm2	178 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	25,000 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Core i9-12900KF and Ryzen 5 PRO 8645HS 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	FCLGA1700	FP7
Power consumption (TDP)	125 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-12900KF and Ryzen 5 PRO 8645HS. You'll probably need this information if you require some particular technology.

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

Security technologies

Core i9-12900KF and Ryzen 5 PRO 8645HS technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-12900KF and Ryzen 5 PRO 8645HS 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 Core i9-12900KF and Ryzen 5 PRO 8645HS. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5-4800, DDR4-3200	DDR5
Maximum memory size	128 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	76.805 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon 760M

Peripherals

Specifications and connection of peripherals supported by Core i9-12900KF and Ryzen 5 PRO 8645HS.

PCIe version	5.0 and 4.0	4.0
PCI Express lanes	20	20

Pros & cons summary

---

Recency	4 November 2021	16 April 2024
Physical cores	16	6
Threads	24	12
Power consumption (TDP)	125 Watt	45 Watt

---

Should you still have questions on choice between Core i9-12900KF and Ryzen 5 PRO 8645HS, 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.

---