# Intel Xeon Platinum 8558U “Emerald Rapids” CPU: Unveiling 48 Cores and 356 MB Cache

URL: https://technosports.co.in/intel-xeon-platinum-8558u-cpu-unveiled/  
Published: 2023-11-10  
Updated: 2023-11-10  
Author: Ishika Setia

[Intel](https://www.intel.com/content/www/us/en/homepage.html)is set to launch its 5th Gen Emerald Rapids CPUs on December 14th. This new CPU lineup is anticipated to feature a slight increase in the number of cores/threads, a substantial boost in cache size, and enhanced AI capabilities, all while maintaining compatibility with existing LGA 4677 socketed platforms.

![Intel Xeon Platinum 8558U](https://technosports.co.in/wp-content/uploads/2023/11/image-134.jpg)

## **The All New Intel Xeon Platinum 8558U**

The 5th Gen Emerald Rapids SKUs have been previously covered with their specifications, and a new entry in the [Geekbench](https://technosports.co.in/?s=Geekbench)6 database, the Xeon Platinum 8558U, displays a significant increase in cache capacity compared to its predecessors. The Xeon Platinum 8558U boasts 48 cores based on the Raptor Cove P-Core architecture, along with 96 threads and a 2.0 GHz base frequency. Notably, the CPU doesn’t exceed 2.0 GHz, so its performance may not be fully represented in this test. It was tested on the Supermicro X13SEDW-F motherboard, part of the Eagle Stream platform, supporting up to 350W TDP chips and up to 4 TB of memory.

![](https://technosports.co.in/wp-content/uploads/2023/11/image-135.jpg)

In terms of cache, the Xeon Platinum 8558U “Emerald Rapids” offers a substantial 260 MB of L3 cache and 2 MB of L2 cache distributed in 48 MB pools for each die cluster, resulting in a total of 356 MB. This is a 77% increase compared to Sapphire Rapids chips, which offer up to 201 MB of cache (105 MB L3 + 96 MB L2) in the same 48-core configurations. The L3 cache alone sees a 2.48x increase.

Recently leaked Xeon Platinum 8592+ and Xeon Platinum 8580 “Emerald Rapids” CPUs also demonstrate similar cache size increases over their predecessors, with the top chip providing 448 MB of cache.

![](https://technosports.co.in/wp-content/uploads/2023/11/image-136.jpg)

Intel’s 5th Gen Emerald Rapids CPUs for the Xeon Data Center segment, expected on December 14th, come with various improvements, including a significantly larger LLC cache, enhanced memory speed, higher CPU core count (up to 64 cores), CXL Type 3 high bandwidth interface, workload optimizations, optimized power mode, up to 17% increase in general-purpose performance per watt, offloading CPU cores with Intel Accelerator Engines for power efficiency, substantial performance improvements in inference and training, Intel AMX for built-in AI acceleration, and out-of-the-box deployment with optimized software stacks. More detailed specs and performance benchmarks will likely be revealed in the coming month as the launch date approaches.