"Our self-learning caching algorithms are very sophisticated, such that we don't access the hard drive as frequently as we've witnessed with Seagate's Momentus XT," Kim said. "We think we have a superior solution."
Kim said the drive can go from hibernating state to live state in under 7 seconds.
"Some [computer manufacturers] have said we have the best-in-class in terms of responsiveness," Kim said.
One detriment attributed to hybrid drives is their use of mechanics, which can break if a laptop is dropped or jarred. Kim said Toshiba's upcoming hybrid comes with its long-used free-fall sensors, also known as accelerometers, which detect a fall and disengages the read-write head to protect it from impact.
"The technology is very sophisticated. We've been able to been able to tune our Free-fall sensors for a fall as low as 4 inches above a desktop," she said.
While Toshiba is starting with a hybrid drive aimed at Ultrabooks, Kim said the company will expand into other markets, such as full-sized laptops, and possibly desktops someday.
Kim would not disclose a suggested retail price for the dirve, saying that the hybrid will be "competitive" with hard disk drives and Seagate's Momentus XT in price.
Kim said the drive will run for around $.14 cents or less per gigabyte of capacity. That would indicate that a 1TB version of the drive would sell for around $140. By comparison, Seagate's 750GB Momenus XT hybrid drive currently sells for $195 to $324 on online retail sites.
Read more about storage hardware in Computerworld's Storage Hardware Topic Center.