[#ArmHoldings]() # Arm Unveils Neoverse CSS N4 Server Subsystem September 8, 2026 at 04:16 PM > Arm's new Neoverse CSS N4 features up to 128 cores and PCIe 7.0 support, delivering significant performance and efficiency gains. Arm has officially announced the Neoverse CSS N4, a modular compute subsystem for server processors formerly codenamed CSS Ranger. Utilizing Dionysus cores, these CPUs scale from 8 to 128 cores and reach clock speeds of 3.8 GHz on the advanced TSMC N3P process. The architecture features 64 KB L1 caches, up to 2 MB L2 cache, and a 256 MB System Level Cache per die. It supports DDR5, LPDDR6, and up to 128 lanes of PCIe 6.0 or 7.0. Additionally, CXL 4.0 is supported, with UCIe enabling the interconnection of multiple dies. This release follows the N3 and V3 series from two years ago, with Arm claiming a 2x speed boost and 1.25x better performance per watt. While the N4 leads this new generation, Arm plans to expand the lineup with Neoverse V4 and E4 variants at a later date. ## Related news [#MediaTek]() [#ArmHoldings]() September 15, 2026 at 02:13 PM ## [MediaTek Unveils 2nm Dimensity 9600 Pro Chipset]() > MediaTek debuts the Dimensity 9600 Pro, a 2-nanometer processor featuring Arm CSS for Mobile 2 and an eight-core All-Big-Core CPU design. [#ArmHoldings]() September 8, 2026 at 08:59 AM ## [Arm Unveils Mali-G2-NX GPUs with AI Upscaling]() > Arm's new Mali-G2-NX GPU lineup features dedicated neural accelerators for AI-driven upscaling and frame generation in mobile gaming. [#ArmHoldings]() August 25, 2026 at 09:46 AM ## [Arm Ships 1.5 Billion Neoverse Cores to Datacenters]() > Arm captures 60% of the AI server market and launches a new 3nm AGI CPU featuring 136 Neoverse V3 cores to meet rising AI token demand.