X4 flash memory chips can store four bits per memory cell instead of the two bits per cell of conventional chips. Thanks to the extra bits, a memory card of any given capacity should be 20 to 30 percent less expensive.
Credit: Joshua Scott
Products: X4 Flash Memory
Cost: $10 to $200, depending on capacity and retailer pricing
Availability: Now
Source: sandisk.com
Company: SanDisk