TechPowerUp received notice that some Sapphire-made Radeon HD 7870 GHz Edition video cards suffer from random screen blackouts. The issue results from GPU electrical signal noise and it's caused by poor quality ceramic capacitors.
AMD has been investigating the issue for months, and had already informed its add-in board partners (AIBs) about components responsible, and to take steps to correct the issue. BeHardware, however, was able to reproduce the problem in recent batches of Sapphire-made HD 7870 cards bought from stores. Following the investigation, Sapphire corrected the issue at their production lines, recalled inventories from French retailers, and relaxed its RMA policy towards existing users of its HD 7870 cards.