Hsinchu Science Park, Taiwan, February 1st, 2005 - Sunplus Technology Co., Ltd. (TSE: 2401, FTSE: SUPD) today announced its financial results of 2004. From January to December in 2004, the net sales added up to NT$18,940 million, which grew 70.7% comparing with 2003. The net income in 2004 were NT$2,738 million, which earnings per share were NT$ 3.13 based on current 875,254.4 thousand shares after dividend.

The net sales of 4Q'04 totaled NT$5,014 million,and product gross margin of 4Q'04 dropped to 27.5% due to product mix change, US dollar depreciation and product ASP decline. The R&D expenses in 4th Quarter were 11.0% of the net sales. The SG&A expenses in 4th Quarter were 7.6% of the sales because higher sales commission and service charges. The net income in 4Q'04 amounted NT$344 million, and the earnings per share would be NT$0.39 based on the current 875,254.4 thousand shares.

(in NT$ thousand) 2004 2003 YoY Amount Ratio Amount Ratio Net Sales 18,940,056 100.0% 11,097,653 100.0% 70.7% Gross Margin 5,943,206 31.4% 3,822,309 34.4% 55.5% Operating Income 2,926,528 15.5% 1,978,627 17.8% 47.9% Net Income 2,737,691 14.5% 2,006,971 18.1% 36.4% EPS(NT$) * Based on 875,254.4 Thousand Shares 3.13 2.29

(in NT$ thousand) 4Q2004 4Q2003 YoY Amount Ratio Amount Ratio Net Sales 5,014,302 100.0% 3,761,751 100.0% +33.3% Gross Margin 1,377,933 27.5% 1,283,486 34.1% +7.4% Operating Income 447,986 8.9% 772,712 20.5% -42.0% Net Income 344,125 6.9% 802,381 21.3% -57.1% EPS(NT$) * Based on 875,254.4 Thousand Shares 0.39 0.92

(in NT$ thousand) 4Q2004 3Q2004 QoQ Amount Ratio Amount Ratio Net Sales 5,014,302 100.0% 5,452,778 100.0% -8.0% Gross Margin 1,377,933 27.5% 1,880,965 34.5% -26.7% Operating Income 447,986 8.9% 1,027,189 18.8% -56.4% Net Income 344,125 6.9% 1,032,419 18.9% -66.7% EPS(NT$) * Based on 875,254.4 Thousand Shares 0.39 1.18

About Sunplus

Sunplus Technology Co., Ltd. (TWSE: 2401, LSE: SUPD), established in 1990, is a leading chip provider for multimedia and automotive applications such as DVD player, portable DVD player, home entertainment audio products, car infotainment and advanced driving assistance system(ADAS). Meanwhile Sunplus is offering high-speed I/O IP, high performance data conversion IP, and analog IP for a broad range of applications on consumer, portable, and connected devices for Sunplus has been accumulating strong IP technologies on consumer and multimedia segments. Sunplus is headquartered in Taiwan and has service offices in Shanghai, Shenzhen and Chengdu. For more information, please visit Sunplus website at www.sunplus.com.

Sunplus Contact

Spokesperson

Wayne Shen
Vice President
+886-3-5786005#2350
wayne@sunplus.com

Deputy Spokesperson

Joseph Chuang
Administration Div. Director
+886-3-5786005#3120
pr@sunplus.com