TSMC Monthly Sales Report - August 2005

Hsinchu, Taiwan, R.O.C. – September 8, 2005 -- TSMC (TAIEX: 2330, NYSE: TSM) today announced that net sales for August 2005 totaled NT$23,182 million, and that revenues for January through August 2005 were NT$158,199 million.

Ms. Lora Ho, TSMC vice president and chief financial officer, noted that, “Due to continued demand recovery from our customers, wafer shipments for August 2005 increased over July 2005. As a result, net sales for August 2005 increased by 11.2 percent compared to July 2005. On a year-over-year basis, net sales for August 2005 decreased 1.0 percent.”

“Due to a better-than-expected recovery of customer demand as well as a more favorable NT/US dollar exchange rate, we have full confidence that we shall meet our third quarter guidance,” Ms. Ho added.

Sales Report: (Unit: NT$ million)

Net Sales

2005(1)

2004

Increase (Decrease) %

August

23,182

23,414

(1.0)

January through August

158,199

168,944

(6.4)

(1): Year 2005 figures have not been audited.