Apacer's "Giant II DDR3 Overclocking Memory Module Series" selects the best-performing Elpida''s 1Gbit, 128x8 particles suited for overclocking, which are screened in the dual channel test environment using the advanced test fixture and programs under diversified parameters of voltage and time sequences. Stricter than other brands'' screening standards, the particles are further tested in the high temperature and high pressure environment for 72 hours to wash out unstable ones and ensure best overclocking performance and stability.