The Intel Core i9-9900KS Special Edition desktop processor represents a high-performance option within Intel's 9th generation Core series. Designed for enthusiasts and gamers, this processor is distinguished by its ability to achieve a 5.0GHz turbo frequency across all eight cores directly out of the box, without requiring manual overclocking. This characteristic positions it as a top-tier choice for users seeking maximum performance from the 9th Gen lineup. The following article details the specifications, compatibility, and key considerations for UK consumers based on available information.
Processor Specifications and Performance
The Intel Core i9-9900KS is an 8-core, 16-thread processor built on the Coffee Lake architecture. Its primary feature is a maximum turbo frequency of 5.0GHz, which is enabled across all cores simultaneously. The base clock speed is 4.0GHz. This processor is unlocked and overclockable, allowing for further performance tuning by users with compatible hardware and cooling solutions.
Compared to other 9th Gen Intel Core processors, the i9-9900KS is positioned as the "Special edition performance" model. For context: * The standard Intel Core i9-9900K also offers a max turbo frequency of up to 5.0GHz but has a lower base frequency of 3.6GHz. * The Intel Core i7-9700K has a max turbo frequency of up to 4.9GHz and a base frequency of 3.6GHz. * The Intel Core i5-9600K has a max turbo frequency of up to 4.6GHz and a base frequency of 3.7GHz.
The i9-9900KS features 16MB of Intel Smart Cache and a Thermal Design Power (TDP) of 127W, which is higher than the 95W TDP of the standard i9-9900K. This increased power requirement is due to the processor's higher sustained performance levels.
Performance testing, as of July 2019, indicated that the 9th Gen Intel Core i9-9900KS scored better than a range of competing processors, including the AMD Ryzen 9 3900X and the Intel Core i9-9980XE, in the majority of over 20 game titles tested. The test configuration used an Nvidia GeForce RTX 2080 Ti graphics card, DDR4 memory (2666, 2933, or 3200 MHz depending on the processor), an Intel Optane SSD 900P, and Windows 10 Pro 1903. These results suggest strong performance in gaming scenarios, though actual user experience may vary based on system configuration and software.
The processor is marketed for "extreme gamers seeking the best performance possible from the world's best gaming processor." It is also compatible with Intel's Performance Maximizer software, an automatic overclocking tool that can dynamically tune unlocked 9th Gen Intel Core processors based on their individual performance potential. This tool is eligible for use with the i9-9900KS, as well as other 9th Gen unlocked processors like the i9-9900K and i7-9700K.
Compatibility and System Requirements
A key advantage of the i9-9900KS is its compatibility with existing Intel Z390 chipset-based motherboards. This means users with a Z390 motherboard can potentially upgrade to this processor without changing their motherboard, provided they update the BIOS to a version that supports the 9900KS. The processor uses the LGA 1151 socket, which is standard for the 300 Series chipsets, including Z390.
Memory compatibility is specified for two channels of DDR4-2666. For UDIMMs (Unbuffered DIMMs), DDR4 2DPC (2 DIMMs per channel) at 2666 MHz is capable when the same UDIMM part numbers are populated within each channel. For SODIMMs, only 1 DPC is supported. The processor supports up to 40 PCI Express lanes, with configurations such as 1x16, 2x8, or 1x8+2x4.
Intel Optane Memory is also supported, which can accelerate gaming and entertainment experiences by improving system responsiveness. However, the thermal solution (cooler) is not included in the box, and a compatible cooling solution is necessary, especially given the 127W TDP. Users have noted the importance of adequate cooling, with some recommending specific all-in-one liquid coolers and ensuring motherboard compatibility with the cooler's dimensions.
User Reports and Purchase Considerations
Based on user reviews and reports, there are several practical considerations for potential buyers. The i9-9900KS is often described as a "silicon lottery guarantee," meaning it uses highly binned silicon to ensure it can achieve 5GHz on all cores out of the box. While the standard i9-9900K can sometimes be overclocked to similar levels, the KS variant provides this performance certainty.
One notable point is the warranty period. Some information suggests the i9-9900KS has a 1-year warranty, compared to the 3-year warranty often associated with other Intel processors. The reason given is the limited availability of replacement stock for this special edition. It is also noted that overclocking typically voids the warranty for all processors, so the shorter warranty may be less of a concern for enthusiasts who plan to overclock.
Pricing has been observed to fluctuate. Early adopters reported purchasing the processor at Intel's suggested retail rate, but prices have increased significantly over time due to limited availability. Users have also reported issues with third-party sellers, including receiving incorrect models (e.g., an i9-9900K instead of the 9900KS) and problems with product quality, such as receiving degraded units. It is recommended to purchase from reputable retailers or directly from Amazon to ensure product authenticity and customer service support.
For UK consumers, it is important to verify the retailer's location and shipping policies. Some user experiences mention international shipping challenges, such as signature requirements causing inconvenience. Checking for a UK-based seller or a seller with reliable UK delivery options is advisable.
Overclocking and Performance Tuning
The i9-9900KS is unlocked, allowing for overclocking beyond its factory settings. However, achieving higher frequencies, such as 5.1GHz or 5.2GHz, is heavily dependent on cooling and motherboard quality. Users have reported that heat is the primary limiting factor. A robust motherboard with high-quality Voltage Regulator Modules (VRMs) and a powerful cooling solution are recommended for stable overclocking.
Intel's Performance Maximizer software provides an automated way to overclock supported processors, including the i9-9900KS. This tool analyses the individual processor's capabilities and applies a stable overclock, simplifying the process for users who may not be experienced with manual tuning. This feature is particularly relevant for users seeking to extract maximum performance without extensive manual configuration.
Conclusion
The Intel Core i9-9900KS Special Edition is a high-performance desktop processor designed for gamers and enthusiasts who prioritise top-tier performance out of the box. Its key features include a 5.0GHz all-core turbo frequency, 8 cores and 16 threads, and compatibility with the widely used LGA 1151 socket and Z390 chipset. While it offers significant performance advantages, potential buyers should consider the higher TDP, the need for a separate cooling solution, and the potential for price volatility and availability issues. Purchasing from a reliable source is crucial to avoid counterfeit or substandard products. For users with compatible hardware, the i9-9900KS represents a premium option for building a high-performance gaming or workstation PC.