Xeon Platinum 8450H vs i9-11900KF

Primary details

Comparing Core i9-11900KF and Xeon Platinum 8450H processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	427	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Power efficiency	11.91	no data
Architecture codename	Rocket Lake (2021)	Sapphire Rapids (2023−2024)
Release date	16 March 2021 (3 years ago)	10 January 2023 (1 year ago)
Launch price (MSRP)	no data	$4,708

Detailed specifications

Core i9-11900KF and Xeon Platinum 8450H 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)	28 (Octacosa-Core)
Threads	16	56
Base clock speed	3.5 GHz	2 GHz
Boost clock speed	5.2 GHz	3.5 GHz
Bus rate	8 GT/s	no data
L1 cache	64K (per core)	80K (per core)
L2 cache	256K (per core)	2 MB (per core)
L3 cache	16 MB (shared)	75 MB
Chip lithography	14 nm	Intel 7 nm
Die size	no data	4x 477 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	76 °C
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Core i9-11900KF and Xeon Platinum 8450H 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	8
Socket	FCLGA1200	FCLGA4677
Power consumption (TDP)	125 Watt	250 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-11900KF and Xeon Platinum 8450H. 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	Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	no data
Thermal Monitoring	+	-
Turbo Boost Max 3.0	+	no data
Deep Learning Boost	+	+

Security technologies

Core i9-11900KF and Xeon Platinum 8450H technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	no data
Identity Protection	+	-
SGX	-	Yes with Intel® SPS
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-11900KF and Xeon Platinum 8450H are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-11900KF and Xeon Platinum 8450H. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR5-4800, DDR5-4400
Maximum memory size	128 GB	4 TB
Max memory channels	2	8
Maximum memory bandwidth	50 GB/s	no data
ECC memory support	-	+

Peripherals

Specifications and connection of peripherals supported by Core i9-11900KF and Xeon Platinum 8450H.

PCIe version	4.0	5.0
PCI Express lanes	20	80

Pros & cons summary

---

Recency	16 March 2021	10 January 2023
Physical cores	8	28
Threads	16	56
Power consumption (TDP)	125 Watt	250 Watt

---

Should you still have questions on choice between Core i9-11900KF and Xeon Platinum 8450H, 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.

---