Samsung Electronics continued to gain share, as it accounted for 7.6 percent of the market. Samsung now dominates most areas of the memory market, holding the Number 1 position in DRAM, SRAM and the fast-growing NAND flash market.

Hynix Semiconductor moved into the top 10 for the first time in 2005. In the NAND flash segment, Hynix's revenue is likely to reach $1.5 billion, up from $212 million in 2004, an increase of more than 600 percent.

"This success is made more satisfying for Hynix given the financial struggles the company has endured over the last few years," Norwood says.

One vendor missing from the top 10 this year is Philips Semiconductor, which held the No. 9 position in 2004.

"The Dutch company was pushed out of the top 10 for only the fifth time in the last 25 years," Norwood said. The last time the company did not make the top 10 was in 2000 when it was also placed in position 11.