i9-11900KF vs Xeon E7-8891 v2

Primary details

Comparing Xeon E7-8891 v2 and Core i9-11900KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	426
Place by popularity	not in top-100	not in top-100
Market segment	Server	Desktop processor
Power efficiency	no data	11.92
Architecture codename	no data	Rocket Lake (2021)
Release date	1 January 2014 (10 years ago)	16 March 2021 (3 years ago)

Detailed specifications

Xeon E7-8891 v2 and Core i9-11900KF 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	10 (Deca-Core)	8 (Octa-Core)
Threads	20	16
Base clock speed	3.2 GHz	3.5 GHz
Boost clock speed	3.7 GHz	5.2 GHz
Bus rate	8 GT/s	8 GT/s
L1 cache	no data	64K (per core)
L2 cache	no data	256K (per core)
L3 cache	37.5 MB	16 MB (shared)
Chip lithography	22 nm	14 nm
Maximum core temperature	77 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+

Compatibility

Information on Xeon E7-8891 v2 and Core i9-11900KF 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	8	1
Socket	FCLGA2011	FCLGA1200
Power consumption (TDP)	155 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E7-8891 v2 and Core i9-11900KF. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	-	+
Idle States	+	+
Thermal Monitoring	+	+
PAE	46 Bit	no data
Turbo Boost Max 3.0	no data	+
Deep Learning Boost	-	+

Security technologies

Xeon E7-8891 v2 and Core i9-11900KF technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E7-8891 v2 and Core i9-11900KF are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E7-8891 v2 and Core i9-11900KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-1066, DDR3-1333, DDR3-1600	DDR4-3200
Maximum memory size	1.5 TB	128 GB
Max memory channels	4	2
Maximum memory bandwidth	85 GB/s	50 GB/s
ECC memory support	+	-

Peripherals

Specifications and connection of peripherals supported by Xeon E7-8891 v2 and Core i9-11900KF.

PCIe version	3.0	4.0
PCI Express lanes	32	20

Pros & cons summary

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Recency	1 January 2014	16 March 2021
Physical cores	10	8
Threads	20	16
Chip lithography	22 nm	14 nm
Power consumption (TDP)	155 Watt	125 Watt

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