Solid-State TCXO Boosts GPU Utilization and Compute Efficiency

SiTime's Elite 2 Super-TCXO is built for time synchronization, helping to increase GPU utilization in AI data centers.

GPU utilization in AI clusters can be as low as 20% to 40% as timing errors force wait cycles to avoid data corruption, which directly caps GPU utilization. SiTime's Elite 2 Super-TCXO family increases GPU utilization and compute efficiency with sub-nanosecond synchronization, enabling a 10-ns time synchronization across an AI cluster, down from the current 1 µs. 

Offering exceptional thermal and short-term stability, the Elite 2 minimizes time errors between GPUs, unlocking higher system utilization, greater throughput, and better performance per watt. Features include a ±2 ppb/°C dF/dT (frequency temperature slope), a 6 × 10⁻¹² Allan deviation (ADEV), a ±50 ppb frequency stability over –40 to 105°C, and digital frequency tuning to simplify timing-aware network design. 

The Elite 2 Super-TCXO is available in 3.2- × 2.5-mm plastic and 5.0- × 3.2-mm ceramic packages; part numbers are SiT5234, SiT5235, SiT5434, and SiT5435.

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About the Author

Alix Paultre

Alix Paultre

Editor-at-Large, Microwaves & RF

Alix is Editor-at-Large for Microwaves & RF. 

An Army veteran, Alix Paultre was a signals intelligence soldier on the East/West German border in the early ‘80s, and eventually wound up helping launch and run a publication on consumer electronics for the U.S. military stationed in Europe. Alix first began in this industry in 1998 at Electronic Products magazine, and since then has worked for a variety of publications, most recently as Editor-in-Chief of Power Systems Design.

Alix currently lives in Wiesbaden, Germany.