GT Advanced Technologies Inc., (NASDAQ: GTAT), today announced the availability of Acuity? software, a comprehensive performance management solution that lets operators optimize the performance of GT's DSS? family of crystal growth furnaces. Acuity performance software monitors DSS production data providing PV manufacturers with real-time insight into actual versus ideal equipment performance. By understanding these performance gaps, companies can make more informed decisions to ensure that DSS furnaces perform at optimal levels of efficiency run after run.

"Over the past several years, PV manufacturers have made significant investments in our DSS crystalline growth systems," said Vikram Singh, GT's vice president and general manager of its PV equipment group. "These manufacturers are being driven to lower their cost of manufacturing to remain competitive. Understanding how their DSS equipment assets perform is a critical step toward achieving this goal. Acuity software is an innovative and powerful application that puts real-time production data into the hands of production managers. Acuity software turns this data into information that manufacturers can use to improve production efficiency and lower the cost of their crystal growth operations."

Acuity software allows manufacturers to establish key performance indicators (KPIs) that are most critical to achieving optimal performance of their DSS assets. DSS Acuity performance software offers a wide range of features such as configurable KPI dashboards, historical trend analytics, remote monitoring of alarm data, detailed run-to-run performance data and recipe management.

About GT Advanced Technologies Inc.

GT Advanced Technologies Inc. is a global provider of polysilicon production technology, and sapphire and silicon crystalline growth systems and materials for the solar, LED and other specialty markets. The company's products and services allow its customers to optimize their manufacturing environments and lower their cost of ownership. For additional information about GT Advanced Technologies, please visit www.gtat.com.

Forward-Looking Statements

Some of the statements in this press release are forward-looking in nature, including statements regarding expected results from new technology offerings. These statements are based on management's current expectations or beliefs. These forward-looking statements are not a guarantee of performance and are subject to a number of uncertainties and other factors, many of which are outside the Company's control, which could cause actual events to differ materially from those expressed or implied by the statements. Factors that may cause actual events to differ materially from those expressed or implied by our forward-looking statements include the possibility that the Company is unable to recognize revenue on customer contracts, that technological changes could render existing products or technologies obsolete, the Company may be unable to protect its intellectual property rights, competition from other manufacturers may increase, exchange rate fluctuations and conditions in the credit markets and economy may reduce demand for the Company's products and various other risks as outlined in GT Advanced Technologies Inc's (formerly Solar International, Inc.) filings with the Securities and Exchange Commission, including the statements under the heading "Risk Factors" in the Company's annual report on Form 10-K for fiscal 2011 filed on May 26, 2011 and quarterly report on Form 10-Q for the second quarter of fiscal 2012 filed on November 9, 2011. GT Advanced Technologies, Inc. is under no obligation to, and expressly disclaims any such obligation to, update or alter its forward-looking statements, whether as a result of new information, future events, or otherwise.

GT Advanced Technologies
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