Intel Core i9-9900KF vs Intel Core i9-9820X

Comparative analysis of Intel Core i9-9900KF and Intel Core i9-9820X processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, 3DMark Fire Strike - Physics Score.



Reasons to consider the Intel Core i9-9900KF

  • Around 22% higher clock speed: 5.00 GHz vs 4.10 GHz
  • Around 9% higher maximum core temperature: 100°C vs 92°C
  • Around 74% lower typical power consumption: 95 Watt vs 165 Watt
  • Around 23% better performance in PassMark - Single thread mark: 2895 vs 2359
Specifications (specs)
Maximum frequency 5.00 GHz vs 4.10 GHz
Maximum core temperature 100°C vs 92°C
Thermal Design Power (TDP) 95 Watt vs 165 Watt
PassMark - Single thread mark 2895 vs 2359

Reasons to consider the Intel Core i9-9820X

  • Processor is unlocked, an unlocked multiplier allows for easier overclocking
  • 2 more cores, run more applications at once: 10 vs 8
  • 4 more threads: 20 vs 16
  • Around 4% better performance in PassMark - CPU mark: 21084 vs 20306
Specifications (specs)
Unlocked Unlocked vs Locked
Number of cores 10 vs 8
Number of threads 20 vs 16
PassMark - CPU mark 21084 vs 20306

Compare benchmarks

CPU 1: Intel Core i9-9900KF
CPU 2: Intel Core i9-9820X

PassMark - Single thread mark
PassMark - CPU mark
Name Intel Core i9-9900KF Intel Core i9-9820X
PassMark - Single thread mark 2895 2359
PassMark - CPU mark 20306 21084
Geekbench 4 - Single Core 1351
Geekbench 4 - Multi-Core 8837
3DMark Fire Strike - Physics Score 0

Compare specifications (specs)

Intel Core i9-9900KF Intel Core i9-9820X


Architecture codename Coffee Lake Skylake
Launch date Q1'19 October 2018
Place in performance rating 289 57
Processor Number i9-9900KF i9-9820X
Series 9th Generation Intel® Core™ i9 Processors Intel® Core™ X-series Processors
Status Launched Launched
Vertical segment Desktop Desktop


64 bit support
Base frequency 3.60 GHz 3.30 GHz
Bus Speed 8 GT/s DMI3 8 GT/s DMI3
Manufacturing process technology 14 nm 14 nm
Maximum core temperature 100°C 92°C
Maximum frequency 5.00 GHz 4.10 GHz
Number of cores 8 10
Number of threads 16 20
L1 cache 64K (per core)
L2 cache 1 MB (per core)
L3 cache 16.5 MB (shared)
Maximum case temperature (TCase) 72 °C
Number of QPI Links 0


Max memory channels 2 4
Maximum memory bandwidth 41.6 GB/s
Maximum memory size 128 GB 128 GB
Supported memory types DDR4-2666 DDR4-2666


Max number of CPUs in a configuration 1 1
Package Size 37.5mm x 37.5mm
Sockets supported FCLGA1151 FCLGA2066
Thermal Design Power (TDP) 95 Watt 165 Watt
Thermal Solution PCG 2015D (130W) PCG 2017X


Max number of PCIe lanes 16 44
PCI Express revision 3.0 3.0
PCIe configurations Up to 1x16, 2x8, 1x8+2x4
Scalability 1S Only 1S Only

Security & Reliability

Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® Memory Protection Extensions (Intel® MPX)
Intel® OS Guard
Intel® Secure Key technology
Intel® Software Guard Extensions (Intel® SGX)
Intel® Trusted Execution technology (TXT)
Secure Boot

Advanced Technologies

Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
Intel 64
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® Optane™ Memory Supported
Intel® Stable Image Platform Program (SIPP)
Intel® TSX-NI
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Thermal Monitoring
Intel® Advanced Vector Extensions (AVX)
Number of AVX-512 FMA Units 2


Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)