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The memory wall, once a niche topic for computer architects arguing over cache hierarchies, now shapes how AI data centers are physically built. As large language models move from training into round-the-clock inference, the industry is now pushing against the limits of physics. The problem is how to move enough bytes between memory and logic, and between accelerators, within the loss, noise, power and thermal budgets of copper, optics and power delivery networks.

Ultra-low-impedance power distribution network (PDN) structures are difficult to correlate because the impedance of the device under test (DUT) can be comparable to artifacts introduced by probe coupling, probe landing, reference-plane placement, and electromagnetic solver configuration settings. This article shows some possible full-wave 3D simulation workflows for the IEEE TC-EDMS Benchmark Problem V, a four-via test case on 1 mm pitch in which the vias are shorted together on the L2 plane.  

Modern AI and datacenter systems, equipped with complex multi-domain Power Distribution Networks (PDNs), grapple with substantial challenges stemming from large-signal crosstalk and ground bounce.

The rise of AI and data centers is placing higher performance demands on systems than ever before, which requires increasingly advanced chiplet designs. The need to meet this level of performance has driven the development of new compliance standards for communication between chiplets with advanced packages.

Just over six months before the event begins, there is already high demand for exhibition space at the EMV 2027.

Signal Integrity Journal is pleased to welcome Benoit Derat as its newest Technical Advisor.

The need for speed will be the driving force behind energy production and efforts to make increasingly efficient use of available energy. Eric Bogatin reflects upon the evolution of power resources from the Industrial Revolution to today’s generation of AI and network processors.

SiTime announces the differential-ended SiT5977 Super-TCXO, the only single-chip timing solution that delivers the most resilient performance for AI compute-nodes with high bandwidth and network synchronization.

IDTechEx reports that the data center liquid cooling market could see a six-fold size expansion over the next 10 years.

Signal Edge Solutions, a leading provider of signal and power integrity engineering solutions, is delighted to share that Benjamin Dannan, the company’s founder and chief technologist, is a finalist for the prestigious DesignCon 2025 Engineer of the Year Award.