Xeon E-2456 vs Core i9-11900KB

Primary details

Comparing Core i9-11900KB and Xeon E-2456 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	446	434
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Architecture codename	Tiger Lake-H (2021)	Raptor Lake-S
Release date	May 2021 (3 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$539	no data

Detailed specifications

Core i9-11900KB 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	3.3 GHz	3.3 GHz
Boost clock speed	4.9 GHz	5.1 GHz
L1 cache	80K (per core)	80 KB (per core)
L2 cache	1.25 MB (per core)	1.25 MB (per core)
L3 cache	24 MB (shared)	18 MB (shared)
Chip lithography	10 nm SuperFin	Intel 7 nm
Die size	190 mm2	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	Yes	No

Compatibility

Information on Core i9-11900KB 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	1
Socket	FCBGA1787	FCLGA1700
Power consumption (TDP)	65 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-11900KB 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)	+	+
Speed Shift	+	no data
Turbo Boost Technology	no data	2
Hyper-Threading Technology	+	+
TSX	-	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
Turbo Boost Max 3.0	+	-
Status	Launched	Launched

Security technologies

Core i9-11900KB and Xeon E-2456 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-11900KB 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 i9-11900KB and Xeon E-2456. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR5-4800
Maximum memory size	128 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	51.2 GB/s	no data
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® UHD Graphics for 11th Gen Intel® Processors	N/A
Quick Sync Video	+	no data
Graphics max frequency	1.45 GHz	no data
Execution Units	32	no data

Graphics interfaces

Available interfaces and connections of Core i9-11900KB and Xeon E-2456 integrated GPUs.

Number of displays supported

4

no data

Graphics image quality

Maximum display resolutions supported by Core i9-11900KB and Xeon E-2456 integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@60Hz	no data
Max resolution over eDP	4096 x 2304@60Hz	no data
Max resolution over DisplayPort	7680x4320@60Hz	no data

Graphics API support

APIs supported by Core i9-11900KB and Xeon E-2456 integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.6	no data

Peripherals

Specifications and connection of peripherals supported by Core i9-11900KB and Xeon E-2456.

PCIe version	4.0	5
PCI Express lanes	20	20

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.

Xeon E-2456 outperforms Core i9-11900KB by 2% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	14.80	15.08
Physical cores	8	6
Threads	16	12
Power consumption (TDP)	65 Watt	80 Watt

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Should you still have questions on choice between Core i9-11900KB and Xeon E-2456, ask them in Comments section, and we shall answer.

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