It's a tantalizing prospect for traders whose success often hinges on microseconds: a desktop PC algorithm that crunches market data faster than today's most advanced supercomputers.

Toshiba Corp. says it has the technology to make such rapid-fire calculations a reality — not quite quantum computing, but perhaps the next best thing. The claim is being met with a mix of intrigue and skepticism at financial firms in Tokyo and worldwide.

The company's "simulated bifurcation algorithm" is designed to harness the principles behind quantum computers without requiring the use of such machines, which currently have limited applications and can cost millions of dollars to build and keep near absolute zero temperature. Toshiba says its technology, which may also have uses outside finance, runs on PCs made from off-the-shelf components.