EPYC 9654 vs i9-11900KF

Primary details

Comparing Core i9-11900KF and EPYC 9654 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	424	5
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	1.27
Market segment	Desktop processor	Server
Series	no data	AMD EPYC
Power efficiency	11.91	19.76
Architecture codename	Rocket Lake (2021)	Genoa (2022−2023)
Release date	16 March 2021 (3 years ago)	10 November 2022 (2 years ago)
Launch price (MSRP)	no data	$11,805

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i9-11900KF and EPYC 9654 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	8 (Octa-Core)	96
Threads	16	192
Base clock speed	3.5 GHz	2.4 GHz
Boost clock speed	5.2 GHz	2.4 GHz
Bus rate	8 GT/s	no data
Multiplier	no data	24
L1 cache	64K (per core)	6 MB
L2 cache	256K (per core)	96 MB
L3 cache	16 MB (shared)	384 MB (shared)
Chip lithography	14 nm	5 nm, 6 nm
Die size	no data	12x 72 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	78,840 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Core i9-11900KF and EPYC 9654 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	2
Socket	FCLGA1200	SP5
Power consumption (TDP)	125 Watt	360 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-11900KF and EPYC 9654. 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	+	-
Idle States	+	no data
Thermal Monitoring	+	-
Turbo Boost Max 3.0	+	no data
Precision Boost 2	no data	+
Deep Learning Boost	+	-

Security technologies

Core i9-11900KF and EPYC 9654 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
Secure Key	+	no data
Identity Protection	+	-
SGX	-	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-11900KF and EPYC 9654 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 i9-11900KF and EPYC 9654. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR5-4800
Maximum memory size	128 GB	6 TiB
Max memory channels	2	no data
Maximum memory bandwidth	50 GB/s	460.8 GB/s

Peripherals

Specifications and connection of peripherals supported by Core i9-11900KF and EPYC 9654.

PCIe version	4.0	5.0
PCI Express lanes	20	128

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

---

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.

---

Pros & cons summary

---

Performance score	16.33	78.01
Recency	16 March 2021	10 November 2022
Physical cores	8	96
Threads	16	192
Chip lithography	14 nm	5 nm
Power consumption (TDP)	125 Watt	360 Watt

---

Should you still have questions on choice between Core i9-11900KF and EPYC 9654, 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.

---