Japanese users won\u2019t have to worry about a noisy cooling fan disturbing them while they watch high-definition movies on NEC\u2019s newest computer. The PC, equipped with a Blu-ray drive, uses water-cooling instead.A prototype of the PC, called the Valuestar X VX780\/GD, was on display this week at the Ceatec exhibition in Chiba, Japan.As most Japanese live in small apartments, PCs often do double-duty as both a computer and an entertainment system. But the use of cooling fans means that PCs are not as quiet as standalone DVD players, often interrupting the movie-watching experience. The use of water-cooling means NEC\u2019s Valuestar X runs quietly, making just 31 decibels of noise, or slightly more than a whisper.Priced at 543,000 yen\u00a0(US$4,612), the PC is clearly not intended for people on a budget. But for those willing to pay more for a high-end system, the Valuestar X, which is due to go on sale in December and runs Microsoft\u2019s Windows XP Home Edition operating system, offers some impressive features.In addition to the Blu-ray drive and water-cooling system, the PC offers a digital television tuner, a 3.4GHz Intel Pentium D 945 processor, 1GB of RAM, and dual 250GB hard drives. It also includes a remote control and a 20-inch widescreen liquid crystal display (LCD)\u00a0with internal flat-panel NXT speakers that provide surround sound.-Sumner Lemon, IDG News Service (Singapore Bureau)Related Links:\n\nIBM Licenses Tech for Water-Cooled Servers\n\nSony Blu-ray Disc Recorders, PCs to Hit Japan in Dec.\n\nMatsushita Blu-ray Recorders to Hit Japan in Nov.\n\nHD DVD, Blu-ray Dual Format Disc in the Works?Check out our CIO News Alerts and Tech Informer pages for more updated news coverage.