i9-11900KF vs Celeron 420

Primary details

Comparing Celeron 420 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	Desktop processor	Desktop processor
Power efficiency	no data	11.92
Architecture codename	Conroe-L (2007−2008)	Rocket Lake (2021)
Release date	June 2007 (17 years ago)	16 March 2021 (3 years ago)
Launch price (MSRP)	$23	no data

Detailed specifications

Celeron 420 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	1 (Single-Core)	8 (Octa-Core)
Threads	1	16
Base clock speed	1.6 GHz	3.5 GHz
Boost clock speed	1.6 GHz	5.2 GHz
Bus rate	no data	8 GT/s
L1 cache	64 KB	64K (per core)
L2 cache	512 KB	256K (per core)
L3 cache	0 KB	16 MB (shared)
Chip lithography	65 nm	14 nm
Die size	77 mm2	no data
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	60 °C	72 °C
Number of transistors	105 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+
VID voltage range	1V-1.3375V	no data

Compatibility

Information on Celeron 420 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	1	1
Socket	LGA775	FCLGA1200
Power consumption (TDP)	35 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron 420 and Core i9-11900KF. You'll probably need this information if you require some particular technology.

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

Security technologies

Celeron 420 and Core i9-11900KF technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron 420 and Core i9-11900KF are enumerated here.

VT-d	-	+
VT-x	-	+
EPT	no data	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron 420 and Core i9-11900KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR4-3200
Maximum memory size	no data	128 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	50 GB/s

Peripherals

Specifications and connection of peripherals supported by Celeron 420 and Core i9-11900KF.

PCIe version	no data	4.0
PCI Express lanes	no data	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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Pros & cons summary

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Physical cores	1	8
Threads	1	16
Chip lithography	65 nm	14 nm
Power consumption (TDP)	35 Watt	125 Watt

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Should you still have questions on choice between Celeron 420 and Core i9-11900KF, ask them in Comments section, and we shall answer.

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