i9-12900KS vs i5-11400

Primary details

Comparing Core i5-11400 and Core i9-12900KS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	724	172
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Power efficiency	15.59	17.49
Architecture codename	Rocket Lake (2021)	Alder Lake-S (2022)
Release date	16 March 2021 (3 years ago)	5 April 2022 (2 years ago)

Detailed specifications

Core i5-11400 and Core i9-12900KS 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	6 (Hexa-Core)	16 (Hexadeca-Core)
Threads	12	24
Base clock speed	2.6 GHz	3.4 GHz
Boost clock speed	4.4 GHz	5.3 GHz
Bus rate	8 GT/s	no data
L1 cache	64K (per core)	80K (per core)
L2 cache	256K (per core)	1.25 MB (per core)
L3 cache	12 MB (shared)	30 MB (shared)
Chip lithography	14 nm	Intel 7 nm
Die size	no data	215 mm2
Maximum core temperature	100 °C	90 °C
Maximum case temperature (TCase)	72 °C	72 °C
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	-	+

Compatibility

Information on Core i5-11400 and Core i9-12900KS 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	FCLGA1200	FCLGA1700
Power consumption (TDP)	65 Watt	150 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-11400 and Core i9-12900KS. 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® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	+
Thermal Monitoring	+	+
Turbo Boost Max 3.0	-	+
Deep Learning Boost	+	+

Security technologies

Core i5-11400 and Core i9-12900KS 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 Core i5-11400 and Core i9-12900KS are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-11400 and Core i9-12900KS. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR5-4800, DDR4-3200
Maximum memory size	128 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	50 GB/s	76.8 GB/s
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel UHD Graphics 730	Intel UHD Graphics 770
Max video memory	64 GB	no data
Quick Sync Video	+	+
Clear Video	+	no data
Clear Video HD	+	+
Graphics max frequency	1.3 GHz	1.55 GHz
Execution Units	24	32
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i5-11400 and Core i9-12900KS integrated GPUs.

Number of displays supported

3

4

Graphics image quality

Maximum display resolutions supported by Core i5-11400 and Core i9-12900KS integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2160@60Hz	4096 x 2160 @ 60Hz
Max resolution over eDP	5120 x 3200 @60Hz	5120 x 3200 @ 120Hz
Max resolution over DisplayPort	5120 x 3200 @60Hz	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Core i5-11400 and Core i9-12900KS integrated GPUs, sometimes API versions are included.

DirectX	12.1	12
OpenGL	4.5	4.5

Peripherals

Specifications and connection of peripherals supported by Core i5-11400 and Core i9-12900KS.

PCIe version	4.0	5.0 and 4.0
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.

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Pros & cons summary

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Performance score	10.91	28.24
Integrated graphics card	4.15	6.15
Recency	16 March 2021	5 April 2022
Physical cores	6	16
Threads	12	24
Power consumption (TDP)	65 Watt	150 Watt

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Should you still have questions on choice between Core i5-11400 and Core i9-12900KS, ask them in Comments section, and we shall answer.

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