In the emerging AI factories of Texas and North Dakota, liquid cooling is rapidly moving from laboratory experiments to large‑scale deployment. With the proliferation of NVIDIA Blackwell architecture and AMD MI300 series chips, per‑rack power consumption has surged from the traditional 15kW to well over 100kW. This environment imposes new physical demands on optical modules: they must handle immense thermal loads within extremely confined spaces without compromising signal integrity.
Traditional finned‑top optical modules often suffer from mechanical interference or excessive thermal resistance when placed inside liquid‑cooled cold‑plate architectures. In response, HaloWill has introduced the OSFP‑RHS (Riding Heat Sink) flat‑top optical module, specifically optimized for North America’s high‑density deployment environments. The RHS design completely removes the module’s native cooling fins and replaces them with a precision‑machined, flat metal contact surface that mates seamlessly with the system’s cold plate. This “system‑level cooling” philosophy improves module heat dissipation efficiency by more than 40 percent, ensuring that even under the ultra‑high power demands of 1.6T operation, the optical engine inside the module stays within its optimal temperature range.
Increasingly, North American data center architects are favoring RHS packaging for next‑generation networks—not only because it solves thermal challenges but also because it enables higher vertical port density. HaloWill’s RHS series modules are built with carefully selected materials, including a high‑thermal‑conductivity TIM (thermal interface material) that further reduces contact resistance between the module and the system cold plate. The result is more stable transmission performance at the same coolant temperature and a drastically reduced risk of bit‑error‑rate (BER) spikes caused by overheating.
In addition, HaloWill understands the North American market’s insistence on hot‑swappable maintainability. Even within complex liquid‑cooled systems, our RHS modules retain excellent operational accessibility. Procurement managers and field engineers do not need to power down an entire liquid‑cooled switch just to replace a single module—a critical advantage for colocation providers that prioritize uptime. The HaloWill brand stands not only for leading‑edge technical specifications but also for deep foresight and rapid response to the physical evolution of data center architecture.
