Hsinchu Science Park, Taiwan, April 28th, 2005 - Sunplus Technology Co., Ltd. (TSE: 2401, FTSE: SUPD) today announced its financial results of 1Q'05. The net sales from January to March in 2005 added up to NT$4,164 million, which grew 14.6% comparing with the same period in 2004. The gross margin of 1Q'05 dropped to 25.4% due to product mix change, US dollar depreciation and product ASP decline. The R&D expenses in 1Q'05 were 13.2% of the net sales. The SG&A expenses in 1Q'05 were 5.3% of the sales which declined 42.2% QoQ. The operating profits in 1Q'05 were NT$288million. The net income in 1Q'05 were NT$179million, which earnings per share were NT$ 0.20 based on current 875,254.4 thousand shares.

(in NT$ thousand) 1Q2005 1Q2004 YoY Amount Ratio Amount Ratio Net Sales 4,163,961 100.0% 3,634,990 100.0% +14.6% Gross Margin 1,057,184 25.4% 1,176,715 32.4% -10.2% Operating Income 288,419 6.9% 586,998 16.1% -50.9% Net Income 179,085 4.3% 567,863 15.6% -68.5% EPS(NT$) * Based on 875,254,400 Shares 0.20 0.65

(in NT$ thousand) 1Q2005 4Q2004 QoQ Amount Ratio Amount Ratio Net Sales 4,163,961 100.0% 5,014,302 100.0% -17.0% Gross Margin 1,057,184 25.4% 1,377,933 27.5% -23.3% Operating Income 288,419 6.9% 447,986 8.9% -35.6% Net Income 179,085 4.3% 344,125 6.9% -48.0% EPS(NT$) * Based on 875,254,400 Shares 0.20 0.39