Intel Core i9 9900K (9th Gen) vs. Intel Core i9 9900X X-series (9th Gen)

CPU Comparison, Reviews and Tests

In depth comparison and review of Intel Core i9 9900K (9th Gen) and Intel Core i9 9900X X-series (9th Gen). Compare dimensions, performance, cache memory, number of cores, clock speed, RAM, power efficiency and other important specifications and features to easily choose the right CPU for you. Our goal is to help you uncover differences between the products and find the processor that will best fit your needs.

CPUs Specifications Comparison

Intel Core i9 9900K (9th Gen) vs. Intel Core i9 9900X X-series (9th Gen) Benchmark Chart
GENERAL Intel Core i9 9900K (9th Gen) Intel Core i9 9900X X-series (9th Gen)
Product Type Processor Processor
PROCESSOR Intel Core i9 9900K (9th Gen) Intel Core i9 9900X X-series (9th Gen)
Type Intel Core i9 9900K (9th Gen) Intel Core i9 9900X X-series (9th Gen)
ARCHITECTURE
Processor Qty 1 1
Compatible Processor Socket LGA1151 Socket LGA2066 Socket
Manufacturing Process 14 nm 14 nm
Thermal Design Power 95 W 165 W
Thermal Specification 100 °C 92 °C
PCI Express Revision 3.0 3.0
PCI Express Configurations 1x16, 2x8, 1x8+2x4 -
PCI Express Lanes Qty 16 44
Architecture Features Enhanced SpeedStep technology, Hyper-Threading Technology, Execute Disable Bit capability, Intel Virtualization Technology, Intel 64 Technology, Intel Trusted Execution Technology, streaming SIMD extensions 4.1, streaming SIMD extensions 4.2, Intel Turbo Boost Technology 2.0, Intel AES New Instructions (AES-NI), Thermal Monitoring Technologies, Intel Virtualization Technology for Directed I/O (VT-d), Intel vPro Technology, Idle States, Intel Identity Protection Technology, Intel Secure Key, Intel Advanced Vector Extensions 2 (AVX2.0), Intel TSX-NI, Intel Stable Image Platform Program (SIPP), Intel OS Guard, Intel Software Guard Extensions (SGX), Intel Memory Protection Extensions (MPX), Intel Optane Memory Supported, Intel Boot Guard Enhanced SpeedStep technology, Hyper-Threading Technology, Execute Disable Bit capability, Intel Virtualization Technology, Intel Turbo Boost Technology, Intel 64 Technology, streaming SIMD extensions 4.1, streaming SIMD extensions 4.2, Intel AES New Instructions (AES-NI), Intel Virtualization Technology for Directed I/O (VT-d), Intel Advanced Vector Extensions 2 (AVX2.0), Intel Turbo Boost Max Technology 3.0, Intel Optane Memory Supported, Intel Advanced Vector Extensions 512 (AVX-512)
PERFORMANCE
Number of Cores 8-core 10-core
Number of Threads 16 threads 20 threads
Clock Speed (Frequency) 3.6 GHz 3.5 GHz
Max Turbo Speed 5 GHz 4.4 GHz
CACHE MEMORY
Cache 16 MB 19.25 MB
Cache Memory Details Smart Cache - 16 MB Smart Cache - 19 MB
INTEGRATED GRAPHICS (GPU) Intel Core i9 9900K (9th Gen) Intel Core i9 9900X X-series (9th Gen)
Type Intel UHD Graphics 630 -
Base Frequency 350 MHz -
Max Dynamic Frequency 1.2 GHz -
Max Supported Memory Size 64 GB -
Max Supported Resolution 4096x2304@24Hz (HDMI), 4096x2304@60Hz (eDP), 4096x2304@60Hz (DP) -
Features Intel Clear Video Technology, Intel Clear Video HD Technology, InTRU 3D Technology, Triple Display Capable -
MISCELLANEOUS Intel Core i9 9900K (9th Gen) Intel Core i9 9900X X-series (9th Gen)
Service & Support Limited warranty - 3 years Limited warranty - 3 years
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