i9-11900KF vs i7-990X Extreme Edition

VS

Primary details

Comparing Core i7-990X Extreme Edition and Core i9-11900KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in the rankingnot rated437
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
SeriesIntel Core i7EEno data
Power efficiencyno data11.88
Architecture codenameWestmere (2010−2011)Rocket Lake (2021)
Release date13 February 2011 (13 years ago)16 March 2021 (3 years ago)

Detailed specifications

Core i7-990X Extreme Edition 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 cores6 (Hexa-Core)8 (Octa-Core)
Threads1216
Base clock speedno data3.5 GHz
Boost clock speed3.46 GHz5.2 GHz
Bus typeQPIno data
Bus rate6.4 GT/s8 GT/s
Multiplier26no data
L1 cacheno data64K (per core)
L2 cache1.5 MB256K (per core)
L3 cache12 MB16 MB (shared)
Chip lithography32 nm14 nm
Die size239 mm2no data
Maximum core temperatureno data100 °C
Maximum case temperature (TCase)no data72 °C
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier-+

Compatibility

Information on Core i7-990X Extreme Edition 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 configuration1 (Uniprocessor)1
Socketno dataFCLGA1200
Power consumption (TDP)130 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-990X Extreme Edition and Core i9-11900KF. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI++
AVX-+
Enhanced SpeedStep (EIST)++
Turbo Boost Technologyno data2.0
Hyper-Threading Technologyno data+
TSX-+
Idle Statesno data+
Thermal Monitoring-+
Turbo Boost Max 3.0no data+
Deep Learning Boost-+

Security technologies

Core i7-990X Extreme Edition and Core i9-11900KF technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+
EDBno data+
Secure Keyno data+
Identity Protection-+
SGXno data-
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-990X Extreme Edition and Core i9-11900KF are enumerated here.

VT-dno data+
VT-xno data+
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-990X Extreme Edition and Core i9-11900KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesno dataDDR4-3200
Maximum memory size24 GB128 GB
Max memory channelsno data2
Maximum memory bandwidthno data50 GB/s

Peripherals

Specifications and connection of peripherals supported by Core i7-990X Extreme Edition and Core i9-11900KF.

PCIe versionno data4.0
PCI Express lanesno data20

Pros & cons summary


Recency 13 February 2011 16 March 2021
Physical cores 6 8
Threads 12 16
Chip lithography 32 nm 14 nm
Power consumption (TDP) 130 Watt 125 Watt

i9-11900KF has an age advantage of 10 years, 33.3% more physical cores and 33.3% more threads, a 128.6% more advanced lithography process, and 4% lower power consumption.

We couldn't decide between Core i7-990X Extreme Edition and Core i9-11900KF. We've got no test results to judge.


Should you still have questions on choice between Core i7-990X Extreme Edition and Core i9-11900KF, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core i7-990X Extreme Edition
Core i7-990X Extreme Edition
Intel Core i9-11900KF
Core i9-11900KF

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


3.7 49 votes

Rate Core i7-990X Extreme Edition on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
4.1 613 votes

Rate Core i9-11900KF on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Core i7-990X Extreme Edition or Core i9-11900KF, agree or disagree with our judgements, or report an error or mismatch.