Intel Launches 288-Core Xeon 6+ on 18A Process

🔑 Enhanced Key Takeaways

• •Clearwater Forest uses a multi-chiplet design with 12 compute tiles on 18A, three active Intel 3 base tiles, and two Intel 7 I/O tiles, connected via Foveros Direct 3D and EMIB packaging[1][2].
• •Each compute tile contains six quad-core modules of Darkmont E-cores with 64KB L1 instruction cache per core, 4MB shared L2 per quad, and 48MB L3 per tile, totaling 576MB LLC per CPU[1][2][3].
• •Includes 16 accelerators per CPU such as four each of QuickAssist Technology, Dynamic Load Balancers, Data Streaming Accelerators, and In-Memory Analytics Accelerators, plus 96 PCIe Gen5 lanes and 64 CXL 2.0 lanes[1][3].
• •Ericsson testing shows Xeon 6990E+ delivers 38% lower rack power, 60% higher perf/watt, and 30% better performance vs. dual-socket Sierra Forest at same core count[2][4].

🛠️ Technical Deep Dive

• •Multi-chiplet architecture: 12 compute tiles (18A process, each with 6x quad-core Darkmont E-core modules for 24 cores/tile), 3 active base tiles (Intel 3, each with 192MB LLC and 4 DDR5 channels), 2 I/O tiles (Intel 7)[1][2][3].
• •Core microarchitecture improvements: 64KB L1 instruction cache/core, wider front-end, 416-entry OoO window, increased execution resources for better integer/vector throughput[1].
• •Cache hierarchy: 4MB L2 shared per quad-core group, 48MB L3 per compute tile (576MB total LLC), 12-channel DDR5-8000 support (768-bit bus)[1][2][3].
• •Interconnects and packaging: Foveros Direct 3D (9µm Cu-to-Cu bonding), EMIB 2.5D, high-bandwidth on-chip fabric; 192 UPI lanes, up to 3TB DDR5 in dual-socket[1][2].
• •Accelerators (Xeon 6+): 4x QuickAssist Tech, 4x Dynamic Load Balancer, 4x Data Streaming Accel, 4x In-Memory Analytics Accel per I/O tile; TDP 300-500W[1][3].

🔮 Future ImplicationsAI analysis grounded in cited sources

⏳ Timeline