Hsinchu Science Park, Taiwan, February 10th, 2006 - Sunplus Technology Co., Ltd. (TSE: 2401, FTSE: SUPD) today announces its financial results of 4th Quarter in 2005. The sales of 4Q'05 summed up NT$5,240million, which grew 6.3% comparing with 3Q'05. The gross margin in 4Q'05 was improved to 36.8% since gross margin in 4Q'04 was 27.5%. The R&D expenses in 4Q'05 were 11.9%. The net profits in 4Q'05 were NT$851million and the earnings per share in 4Q'05 were NT$0.90 based on the outstanding 948,729,656 shares on December 31st 2005.

The net sales from January 1st to December 31 added up to NT$18,781million, and gross margin were 32.6%, R&D expenses were 13.1% of the totaled net sales. The net profits from January 1st to December 31st in 2005 were NT$2,398 million, which earnings per share were NT$2.53 based on the outstanding 948,729,656 shares on December 31st 2005.

During the investor conference Sunplus also make a statement regarding the litigation settlement between Zoran and Mediatek. Being the holder of rights under the Oak patents involved in the litigation, Sunplus will get the cash payment of $20million approximately in 1Q'06. Meanwhile, Sunplus and its subsidiary Sunext Technology have entered into agreements with MediaTek granting each other non-exclusive licenses under the patents that used in the design and manufacture of optical storage devices for personal computer products.

(in NT$ thousand) Jan. ~ Dec. 2005 Jan. ~ Dec. 2004 YoY Net Sales 18,781,122 100.0% 18,940,056 100.0% -0.8% Gross Margin 6,120,398 32.6% 5,943,206 31.4% 3.0% Operating Income 2,584,005 13.8% 2,926,528 15.5% -11.7% Net Income 2,398,355 12.8% 2,737,691 14.5% -12.4% EPS (NT$) * Based on outstanding 948,729,656 shares on 12/31/2005 2.53 2.89

(in NT$ thousand) 4Q 2005 3Q 2005 QoQ Net Sales 5,239,744 100.0% 4,928,759 100.0% 6.3% Gross Margin 1,926,123 36.8% 1,746,231 35.4% 10.3% Operating Income 964,677 18.4% 820,592 16.6% 17.6% Net Income 851,361 16.2% 928,233 18.8% -8.3% EPS (NT$) * Based on outstanding 948,729,656 shares on 12/31/2005 0.90 0.98

(in NT$ thousand) 4Q 2005 4Q 2004 YoY Net Sales 5,239,744 100.0% 5,014,302 100.0% 4.5% Gross Margin 1,926,123 36.8% 1,377,933 27.5% 39.8% Operating Income 964,677 18.4% 447,986 8.9% 115.3% Net Income 851,361 16.2% 344,125 6.9% 147.4% EPS (NT$) * Based on outstanding 948,729,656 shares on 12/31/2005 0.90 0.36