Hsinchu Science Park, Taiwan, July 29th, 2005 - Sunplus Technology Co., Ltd. (TSE: 2401, LSE: SUPD) today announces its financial results of 1st half in 2005. The net sales added up to NT$8,613million, which grew 1.6% comparing with the same period in 2004. Overall gross margin in 1H'05 were 28.4%, R&D expenses were 13.6% of the net sales of 1H'05. The net profits 1H'05 were NT$619 million, which earnings per share were NT$0.70 based on capital stock at June 30, 2005 which is 879,307.3 thousand shares.

The sales of 2nd quarter in 2005 summed up NT$4,449 million, which grew 6.8% comparing with 1st quarter this year. The gross margin rate in 2Q'05 was improved to 31.3% since gross margin rate in 1Q'05 was 25.4%. The R&D expenses in 2Q'05 were 14.0%. The net profits in 2Q'05 were NT$440 million, which grew 145.5% comparing with 1st Quarter in 2005. The earnings per share in 2Q'05 were NT$0.50 based on capital stock at June 30, 2005 which is 879,307.3 thousand shares.

(in NT$ thousand) 1H2005 1H2004 YoY Amount Ratio Amount Ratio Net Sales 8,612,619 100.0% 8,472,976 100.0% +1.6% Gross Margin 2,448,044 28.4% 2,684,308 31.7% -8.8% Operating Income 798,736 9.3% 1,451,353 16.1% -45.0% Net Income 618,761 7.2% 1,361,147 16.1% -54.5% EPS(NT$) *Based on 879,307.3 Shares 0.70 1.55

(in NT$ thousand) 2Q2005 1Q 2005 QoQ Amount Ratio Amount Ratio Net Sales 4,448,658 100.0% 4,163,961 100.0% +6.8% Gross Margin 1,390,860 31.3% 1,057,184 25.4% +31.6% Operating Income 510,317 11.5% 288,419 6.9% +76.9% Net Income 439,676 9.9% 179,085 4.3% +145.5% EPS(NT$) *Based on 879,307.3 Shares 0.50 0.20

(in NT$ thousand) 2Q2005 2Q 2004 QoQ Amount Ratio Amount Ratio Net Sales 4,448,658 100.0% 4,837,986 100.0% -8.0% Gross Margin 1,390,860 31.3% 1,507,593 31.2% -7.7% Operating Income 510,317 11.5% 864,355 17.9% -41.0% Net Income 439,676 9.9% 793,284 16.4% -44.6% EPS(NT$) *Based on 879,307.3 Shares 0.50 0.90