Core i9-9900X

Details and Benchmarks for Intel Core i9-9900X

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Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Core i9-9900X based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

6,091 Rank: 218
Rank Name Score Visual
214 Xeon Platinum 8268 6,097
+0.1%
215 Ryzen 7 PRO 6850HS 6,094
+0%
216 Ryzen 9 3900 6,092
+0%
217 Xeon W-3265M 6,091
+0%
218 Core i9-9900X 6,091
219 Core Ultra 5 226V 6,091
+0%
220 Ryzen 7 PRO 5750G 6,082
-0.1%
221 Xeon E5-2696 v4 6,080
-0.2%
222 Xeon E-2356G 6,080
-0.2%
223 Core i9-10900 6,078
-0.2%

View full ranking →

Multicore Score

Multicore performance score for Core i9-9900X based on multi-threaded benchmark results.

6,055 Rank: 224
Rank Name Score Visual
220 Xeon E5-2695 v4 6,067
+0.2%
221 Xeon w3-2435 6,067
+0.2%
222 Xeon Platinum 8124M 6,063
+0.1%
223 Core i9-10900K 6,062
+0.1%
224 Core i9-9900X 6,055
225 EPYC 7351P 6,053
+-0%
226 Xeon E5-2697A v4 6,044
-0.2%
227 Ryzen 7 5700X 6,040
-0.2%
228 Ryzen 5 7600 6,035
-0.3%
229 Xeon Gold 6140 6,007
-0.8%

View full ranking →

Singlecore Score

Single-core performance score for Core i9-9900X based on single-threaded benchmark results.

6,115 Rank: 230
Rank Name Score Visual
226 Core i9-10900X 6,127
+0.2%
227 Core i9-10980HK 6,119
+0.1%
228 Ryzen 9 PRO 3900 6,116
+0%
229 Ryzen 7 7735HS 6,116
+0%
230 Core i9-9900X 6,115
231 Core i9-10900F 6,113
+-0%
232 Core i3-9350KF 6,112
+-0%
233 Core i9-9900T 6,106
-0.1%
234 Ryzen 7 6800H 6,105
-0.2%
235 Ryzen Threadripper 3970X 6,102
-0.2%

View full ranking →

Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Core i9-9900X based on integer math, floating point math, and prime number computation benchmarks.

5,194 Rank: 281
Rank Name Score Visual
277 Ryzen 9 PRO 6950HS 5,199
+0.1%
278 Xeon Silver 4310 5,197
+0.1%
279 Ryzen 7 3800XT 5,195
+0%
280 Ryzen 9 6900HS 5,195
+0%
281 Core i9-9900X 5,194
282 Xeon W-1290 5,189
-0.1%
283 Ryzen 7 PRO 6850HS 5,187
-0.1%
284 Ryzen 7 6800H 5,187
-0.1%
285 EPYC 7262 5,186
-0.2%
286 EPYC 7281 5,182
-0.2%

View full ranking →

Data Processing

Aggregated score for Core i9-9900X based on data encryption, data compression, and string sorting benchmarks.

5,290 Rank: 282
Rank Name Score Visual
278 Ryzen 7 8840U 5,296
+0.1%
279 Ryzen 7 2700X 5,291
+0%
280 Ryzen 7 PRO 6850HS 5,291
+0%
281 Xeon E5-2695 v4 5,290
+0%
282 Core i9-9900X 5,290
283 Core i9-11900 5,282
-0.2%
284 Ryzen 7 PRO 2700X 5,281
-0.2%
285 Xeon E5-2690 v4 5,278
-0.2%
286 Ryzen Threadripper 1900X 5,273
-0.3%
287 Core i9-7900X 5,272
-0.3%

View full ranking →

Physics & Compute

Aggregated score for Core i9-9900X based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

5,409 Rank: 208
Rank Name Score Visual
204 Xeon W-2175 5,441
+0.6%
205 Xeon E5-2699 v4 5,426
+0.3%
206 Xeon E5-2696 v4 5,412
+0.1%
207 Ryzen Threadripper 2990WX 5,410
+0%
208 Core i9-9900X 5,409
209 Ryzen 7 7840HS 5,408
+-0%
210 Xeon Gold 6136 5,407
+-0%
211 Xeon E5-4669 v4 5,405
-0.1%
212 Core i9-10900X 5,405
-0.1%
213 Core i9-12900T 5,402
-0.1%

View full ranking →

Core i9-9900X Details

The Intel Core i9-9900X, launched in October 2018, stands as a high-end desktop processor designed for power users and enthusiasts. At the time of its release, it was positioned as one of the top-tier offerings in Intel's X-Series lineup, competing directly with high-core-count processors from both Intel and AMD. As of early 2026, the i9-9900X is considered an older generation part, having been superseded by newer architectures and more efficient designs. Despite its age, it remains a notable performer in multi-threaded workloads, though it now trails behind modern flagship processors in both single-core and overall performance.

The Core i9-9900X is built on Intel’s Skylake X Refresh microarchitecture using a 14 nm process node. It features 10 cores and 20 threads, thanks to Intel’s Hyper-Threading technology, enabling it to handle demanding multitasking and parallel processing tasks. Base clock speed is set at 3.5 GHz, with a maximum turbo frequency of 4.4 GHz, allowing for dynamic performance scaling based on workload and thermal conditions. The processor operates at a TDP of 165 W, which, combined with its high core count, results in significant power consumption and heat output, requiring robust cooling solutions.

In terms of memory support, the i9-9900X is compatible with DDR4-2666 memory across a quad-channel interface, offering a theoretical memory bandwidth of 85.3 GB/s. The chip includes a substantial cache hierarchy: 0.313 MiB of L1 instruction cache, 0.313 MiB of L1 data cache, 10 MiB of L2 cache, and a large 19.25 MiB L3 cache. These features help reduce memory latency and improve performance in data-intensive applications. The CPU connects to the platform via a DMI 3.0 bus at 8000 MT/s and supports up to 44 PCIe 3.0 lanes directly from the CPU, making it suitable for high-bandwidth storage and expansion cards.

The Core i9-9900X lacks integrated graphics, requiring a discrete GPU for any visual output. However, it supports a wide range of advanced instruction sets, including AVX, AVX2, and AVX-512, which are essential for scientific computing, media encoding, and machine learning workloads. It also supports Intel’s Turbo Boost Max Technology 3.0, which allows certain cores to reach higher frequencies under optimal conditions. Other key features include Intel VT-x and VT-d for hardware virtualization, as well as AES-NI for encryption acceleration.

Benchmark results show the i9-9900X achieving an Overall Score of 6091, placing it at #217 in the top 2060 processors. Its Singlecore Score of 6115 ranks it at #230, while its Multicore Score of 6055 lands it at #224. While it performs well in multi-threaded environments, it is outpaced by newer processors like the Ryzen 9 9900X and Core i9-14900KS. In comparison to its immediate successor, the Core i9-10900K, the i9-9900X is only marginally slower in multicore performance but slightly weaker in single-core tasks. The processor is competitive with older high-end Xeon and Ryzen Threadripper models but falls behind current-generation designs in both efficiency and raw performance.

Overall, the Core i9-9900X is best suited for users who require a high-core-count CPU for content creation, rendering, or heavy multitasking and who have the cooling and power infrastructure to support its 165 W TDP. While it no longer represents the cutting edge of performance, it remains a capable processor for enthusiasts and professionals with legacy systems or specific compatibility needs.
Frequently Compared

Intel Xeon E3-1245 32 views

AMD EPYC 7551P 25 views

Intel Xeon E5-2450 v2 25 views

AMD A10-7860K 24 views

AMD Phenom X3 8550 23 views

Intel Celeron B810 23 views

Intel Core i7-7800X 23 views

Intel Xeon E5-2673 v4 22 views

AMD Ryzen 7 PRO 5750GE 21 views

AMD Ryzen 7 PRO 4750GE 21 views

Intel Core i9-9900X

Main Specifications

Designer: Intel
Name: Core i9-9900X
Family: Core
Series: i9-9000
Model Number: i9-9900X
Cores: 10
Threads: 20
Base Frequency: 3500 MHz
Turbo Frequency (1 core): 4400 MHz
Turbo Frequency (2 cores): 4400 MHz
Clock Multiplier: 35x (unlocked)
Microarchitecture: Skylake
Core Name: Skylake X Refresh
Core Family: 6
Socket: Socket
Package: FCLGA-2066
Chipset: Lewisburg
Target Segment: Desktop
Max CPUs: 1
TDP: 165 W
Release Price: $989.00

Cache Specifications

L1 Cache: 640 KiB
L1 Instruction Cache: 320.512 KiB (8-way set associative)
L1 Data Cache: 320.512 KiB (8-way set associative)
L2 Cache: 10 MiB (16-way set associative)
L3 Cache: 19.25 MiB (11-way set associative)

Memory Specifications

Supported Memory Type: DDR4-2666
Memory Channels: 4
Maximum Memory: 128 GB
Maximum Bandwidth: 79.47 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 3.0
PCIe Lanes: 44
PCIe Configuration: x16, x8, x4

Physical Specifications

Process: 14 nm
Manufacturer: Intel
Technology: CMOS
Word Size: 64-bit
ISA: x86-64 (x86)

CPU Features

MMX EMMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2 ABM BMI1 BMI2 FMA3 AES RdRand ADX CLMUL F16C x86-16 x86-32 x86-64 Real Protected SMM FPU NX HT TBT 2.0 EIST TXT vPro VT-x VT-d EPT AVX-512 AVX512F AVX512CD AVX512BW AVX512DQ AVX512VL TSX Flex Memory AVX-512 TBMT 3.0 TBT 1.0 FMA
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