Core i9-9900KS

Details and Benchmarks for Intel Core i9-9900KS

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

6,234 Rank: 170
Rank Name Score Visual
166 Core i9-13900E 6,248
+0.2%
167 AMD Ryzen 7 1800X 6,246
+0.2%
168 Xeon w3-2435 6,246
+0.2%
169 Xeon Platinum 8176 6,239
+0.1%
170 Core i9-9900KS 6,234
171 Xeon Platinum 8351N 6,231
+-0%
172 Ryzen 9 PRO 6950H 6,230
-0.1%
173 Xeon E-2276G 6,227
-0.1%
174 Ryzen 7 5800XT 6,224
-0.2%
175 Core i9-7920X 6,221
-0.2%

View full ranking →

Multicore Score

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

5,816 Rank: 279
Rank Name Score Visual
275 Core i9-11900 5,841
+0.4%
276 Ryzen 7 PRO 6850H 5,836
+0.3%
277 Xeon Silver 4216 5,832
+0.3%
278 Core i9-9900T 5,819
+0.1%
279 Core i9-9900KS 5,816
280 Core Ultra 7 268V 5,812
-0.1%
281 Core i9-10850K 5,807
-0.2%
282 Core Ultra 7 256V 5,806
-0.2%
283 Ryzen 7 6800H 5,806
-0.2%
284 Ryzen 9 6900HS 5,803
-0.2%

View full ranking →

Singlecore Score

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

6,512 Rank: 114
Rank Name Score Visual
110 Core i9-11900KF 6,537
+0.4%
111 Xeon w5-2455X 6,529
+0.3%
112 Ryzen Threadripper PRO 5955WX 6,527
+0.2%
113 Core i7-8086K 6,520
+0.1%
114 Core i9-9900KS 6,512
115 Core i9-10980XE 6,512
+0%
116 Xeon E-2236 6,507
-0.1%
117 Ryzen Threadripper PRO 5945WX 6,502
-0.2%
118 Core i9-9900K 6,496
-0.2%
119 Ryzen 7 5800X 6,492
-0.3%

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 i9-9900KS based on integer math, floating point math, and prime number computation benchmarks.

5,092 Rank: 326
Rank Name Score Visual
322 Xeon Gold 6244 5,103
+0.2%
323 Xeon E5-4650 v4 5,103
+0.2%
324 Xeon D-2187NT 5,101
+0.2%
325 Xeon Gold 6144 5,099
+0.1%
326 Core i9-9900KS 5,092
327 Ryzen 5 3600XT 5,088
-0.1%
328 Xeon E-2378 5,087
-0.1%
329 Core i9-11900T 5,083
-0.2%
330 Ryzen 5 5600GT 5,080
-0.2%
331 Xeon E5-2660 v4 5,077
-0.3%

View full ranking →

Data Processing

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

5,225 Rank: 306
Rank Name Score Visual
302 Ryzen 7 PRO 4750GE 5,239
+0.3%
303 EPYC 7262 5,237
+0.2%
304 Xeon W-1290 5,236
+0.2%
305 Ryzen 7 1800X 5,233
+0.2%
306 Core i9-9900KS 5,225
307 Ryzen 7 4800HS 5,225
+0%
308 Ryzen 5 5600GT 5,222
-0.1%
309 Ryzen 7 6800U 5,221
-0.1%
310 Xeon Silver 4310T 5,219
-0.1%
311 Xeon E5-2683 v4 5,216
-0.2%

View full ranking →

Physics & Compute

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

5,170 Rank: 300
Rank Name Score Visual
296 Ryzen 9 6900HS 5,179
+0.2%
297 Xeon W-1370P 5,177
+0.1%
298 Xeon W-1290E 5,174
+0.1%
299 Ryzen 7 7735HS 5,173
+0.1%
300 Core i9-9900KS 5,170
301 Ryzen 7 PRO 5750G 5,170
+0%
302 Xeon Gold 6126 5,169
+-0%
303 Ryzen 7 6800HS 5,169
+-0%
304 Xeon Gold 5120T 5,167
-0.1%
305 Xeon W-2140B 5,165
-0.1%

View full ranking →

Core i9-9900KS Details

With a single-core score of 6,512, the Intel Core i9-9900KS stands among the top-tier desktop processors in its category, ranking #114 out of 2,060 CPUs in single-core performance. Launched in October 2019 as part of Intel's Coffee Lake Refresh lineup, this high-end processor was designed for enthusiasts and power users seeking maximum single-threaded performance. Built on a 14 nm process and based on the Coffee Lake architecture, the i9-9900KS features eight cores and 16 threads, leveraging Intel's Hyper-Threading technology to deliver strong multitasking capabilities. It operates at a base frequency of 4.0 GHz and can boost up to 5.0 GHz on a single core, making it one of the fastest consumer-grade CPUs of its generation.

The processor is packaged in a LGA-1151 socket and requires a 300-series chipset motherboard for optimal compatibility. With a TDP of 127 W, the i9-9900KS demands robust cooling solutions, especially when pushed under heavy loads or during overclocking. While not unlocked in terms of multiplier, the processor still offers significant overclocking headroom due to its high core count and advanced thermal design. It supports DDR4-2666 memory across a dual-channel interface, with a maximum capacity of 128 GB, and features a total cache hierarchy of 0.5 MiB L1, 2 MiB L2, and 16 MiB L3.

Integrated graphics are provided by Intel’s UHD Graphics 630, which features 24 execution units and can reach a maximum frequency of 1.2 GHz. Though not suitable for gaming, this GPU supports up to three displays and is capable of handling basic multimedia tasks. The i9-9900KS includes full support for modern instruction sets such as AVX2, AES-NI, and Intel’s Turbo Boost 2.0, enabling efficient performance in both professional and gaming applications.

In multicore performance, the i9-9900KS achieves a score of 5,816, placing it at #279 in the overall ranking—slightly behind the Core i9-9900K and ahead of the Core i9-10850K. Its overall score of 6,234 positions it at #170 in the broader benchmark landscape, indicating strong performance across a wide range of workloads. While it trails significantly behind modern offerings like the Ryzen 9 9950X3D and Core Ultra 9 285K, the i9-9900KS remains a compelling option for users who prioritize raw clock speeds and single-core performance.

As of March 2026, the Core i9-9900KS is no longer in production and has been superseded by newer generations from both Intel and AMD. However, its legacy as one of the fastest desktop processors of its time remains intact, particularly in scenarios where high clock speeds are critical, such as content creation, real-time rendering, and competitive gaming.
Frequently Compared

AMD Ryzen 9 PRO 3900 30 views

Intel Xeon Silver 4116 30 views

Intel Xeon Silver 4208 29 views

Intel Xeon Silver 4210 29 views

AMD Ryzen 3 PRO 2200GE 28 views

AMD Ryzen 5 PRO 3500U 27 views

AMD Ryzen Embedded R1606G 27 views

Intel Xeon Silver 4116T 27 views

AMD EPYC 7302P 26 views

Intel Xeon W-3245M 26 views

Intel Core i9-9900KS

Main Specifications

Designer: Intel
Name: Core i9-9900KS
Family: Core
Series: i9-9000
Model Number: i9-9900KS
Cores: 8
Threads: 16
Base Frequency: 4000 MHz
Turbo Frequency (1 core): 5000 MHz
Clock Multiplier: 40x (unlocked)
Microarchitecture: Coffee Lake
Core Name: Coffee Lake R
Core Family: 6
Core Model: 158
Socket: LGA-1151
Package: FCLGA-1151
Chipset: 300
Target Segment: Desktop
Max CPUs: 1
TDP: 127 W
Release Price: $513.00

Cache Specifications

L1 Cache: 512 KiB
L1 Instruction Cache: 256 KiB (8-way set associative)
L1 Data Cache: 256 KiB (8-way set associative)
L2 Cache: 2 MiB (4-way set associative)
L3 Cache: 16 MiB (16-way set associative)

Memory Specifications

Supported Memory Type: DDR4-2666
Memory Channels: 2
Maximum Memory: 128 GB
Maximum Bandwidth: 39.74 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 3.0
PCIe Lanes: 16
PCIe Configuration: 1x16, 2x8, 1x8+2x4

Integrated Graphics

GPU: UHD Graphics 630
GPU Designer: Intel
GPU Max Frequency: 1200 MHz
Execution Units: 24

Physical Specifications

Process: 14 nm
Die Area: 180 mm²
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 SST TXT vPro VT-x VT-d EPT MPX SGX Secure Key SMEP SIPP IPT TSX Flex Memory MWT ATT FMA
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