Xeon E-2456 vs i9-12900K

Primary details

Comparing Core i9-12900K and Xeon E-2456 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	185	469
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	35.70	93.11
Market segment	Desktop processor	Server
Series	Intel Core i9	no data
Power efficiency	19.77	17.70
Architecture codename	Alder Lake, Golden Cove, Gracemont (2021)	Raptor Lake-S (2023−2024)
Release date	4 November 2021 (3 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$589	$375

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E-2456 has 161% better value for money than i9-12900K.

Detailed specifications

Core i9-12900K 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	16 (Hexadeca-Core)	6 (Hexa-Core)
Threads	24	12
Base clock speed	3.2 GHz	3.3 GHz
Boost clock speed	5.2 GHz	5.1 GHz
Bus type	DMI 4.0	no data
Bus rate	8 × 16 GT/s	16 GT/s
Multiplier	32	no data
L1 cache	80K (per core)	80 KB (per core)
L2 cache	1.25 MB (per core)	1.25 MB (per core)
L3 cache	30 MB (shared)	18 MB (shared)
Chip lithography	10 nm	Intel 7 nm
Die size	215.25 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	+	-

Compatibility

Information on Core i9-12900K 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	FCLGA1700	FCLGA1700
Power consumption (TDP)	125 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-12900K 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	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
Turbo Boost Technology	2.0	2
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	+	+
SIPP	+	-
Turbo Boost Max 3.0	+	-
Deep Learning Boost	+	-

Security technologies

Core i9-12900K and Xeon E-2456 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-12900K 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 i9-12900K and Xeon E-2456. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4, DDR5	DDR5-4800
Maximum memory size	128 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	76.805 GB/s	no data
ECC memory support	+	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel UHD Graphics 770	N/A
Quick Sync Video	+	-
Clear Video HD	+	no data
Graphics max frequency	1.55 GHz	no data
Execution Units	32	no data

Graphics interfaces

Available interfaces and connections of Core i9-12900K and Xeon E-2456 integrated GPUs.

Number of displays supported

4

no data

Graphics image quality

Maximum display resolutions supported by Core i9-12900K and Xeon E-2456 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	4096 x 2160 @ 60Hz	no data
Max resolution over eDP	5120 x 3200 @ 120Hz	no data
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	no data

Graphics API support

APIs supported by Core i9-12900K and Xeon E-2456 integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.5	no data

Peripherals

Specifications and connection of peripherals supported by Core i9-12900K and Xeon E-2456.

PCIe version	5.0 and 4.0	5
PCI Express lanes	20	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	26.11	14.96
Recency	4 November 2021	14 December 2023
Physical cores	16	6
Threads	24	12
Power consumption (TDP)	125 Watt	80 Watt

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Should you still have questions on choice between Core i9-12900K and Xeon E-2456, ask them in Comments section, and we shall answer.

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