Xeon E-2456 vs i9-9900KF

Primary details

Comparing Core i9-9900KF and Xeon E-2456 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	674	470
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	8.18	93.12
Market segment	Desktop processor	Server
Series	Intel Core i9	no data
Power efficiency	11.45	17.69
Architecture codename	Coffee Lake-R (2018−2019)	Raptor Lake-S (2023−2024)
Release date	7 January 2019 (5 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$488	$375

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E-2456 has 1038% better value for money than i9-9900KF.

Detailed specifications

Core i9-9900KF and Xeon E-2456 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)	6 (Hexa-Core)
Threads	16	12
Base clock speed	3.6 GHz	3.3 GHz
Boost clock speed	5 GHz	5.1 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	16 GT/s
L1 cache	512 KB	80 KB (per core)
L2 cache	2 MB	1.25 MB (per core)
L3 cache	16 MB (shared)	18 MB (shared)
Chip lithography	14 nm	Intel 7 nm
Die size	no data	163 mm2
Maximum core temperature	100 °C	100 °C
Maximum case temperature (TCase)	72 °C	no data
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Core i9-9900KF and Xeon E-2456 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	FCLGA1151	FCLGA1700
Power consumption (TDP)	95 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-9900KF and Xeon E-2456. You'll probably need this information if you require some particular technology.

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

Security technologies

Core i9-9900KF and Xeon E-2456 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-9900KF and Xeon E-2456 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-9900KF and Xeon E-2456. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR5-4800
Maximum memory size	128 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	42.671 GB/s	no data
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

N/A

Peripherals

Specifications and connection of peripherals supported by Core i9-9900KF and Xeon E-2456.

PCIe version	3.0	5
PCI Express lanes	16	16

Synthetic benchmark performance

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

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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.

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Pros & cons summary

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Performance score	11.54	15.02
Recency	7 January 2019	14 December 2023
Physical cores	8	6
Threads	16	12
Power consumption (TDP)	95 Watt	80 Watt

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Should you still have questions on choice between Core i9-9900KF and Xeon E-2456, ask them in Comments section, and we shall answer.

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