Core i9-11900 vs Core i9-9900KS

Primary details

Comparing Core i9-9900KS and Core i9-11900 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	567	444
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	12.31	42.70
Market segment	Desktop processor	Desktop processor
Series	Intel Core i9	no data
Architecture codename	Coffee Lake-R (2018−2019)	Rocket Lake (2021)
Release date	30 October 2019 (4 years ago)	16 March 2021 (3 years ago)
Launch price (MSRP)	$513	no data
Current price	$550 (1.1x MSRP)	$251

Cost-effectiveness evaluation

Performance per price, higher is better.

i9-11900 has 247% better value for money than i9-9900KS.

Detailed specifications

Core i9-9900KS and Core i9-11900 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)	8 (Octa-Core)
Threads	16	16
Base clock speed	4 GHz	2.5 GHz
Boost clock speed	5 GHz	5.2 GHz
L1 cache	512 KB	64K (per core)
L2 cache	2 MB	256K (per core)
L3 cache	16 MB	16 MB (shared)
Chip lithography	14 nm	14 nm
Die size	178 mm2	no data
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	72 °C
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	Yes	No

Compatibility

Information on Core i9-9900KS and Core i9-11900 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	1200
Power consumption (TDP)	127 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-9900KS and Core i9-11900. You'll probably need this information if you require some particular technology.

AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Hyper-Threading Technology	+	no data
TSX	+	+
SIPP	+	no data

Security technologies

Core i9-9900KS and Core i9-11900 technologies aimed at improving security, for example, by protecting against hacks.

TXT

+

+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-9900KS and Core i9-11900 are enumerated here.

AMD-V	+	no data
VT-d	+	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-9900KS and Core i9-11900. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR4-3200
Maximum memory size	128 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	42.671 GB/s	50 GB/s
ECC memory support	-	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare

Intel UHD Graphics 630

Intel UHD Graphics 750

Peripherals

Specifications and connection of peripherals supported by Core i9-9900KS and Core i9-11900.

PCIe version	3.0	4.0
PCI Express lanes	16	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.

Core i9-11900 outperforms Core i9-9900KS by 18% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	12.60	14.83
Integrated graphics card	3.09	4.49
Recency	30 October 2019	16 March 2021
Power consumption (TDP)	127 Watt	65 Watt

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Should you still have questions on choice between Core i9-9900KS and Core i9-11900, ask them in Comments section, and we shall answer.

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