Agility 3 got it a long time ago as they were close in performance and quality to Vertex 3. The Agility 4 seem to be plagued with terrible failure rates. Just running 4.6GHz at 1.3V right now. Hottest temp was 61C on the second core for CPU. Havent overclocked my GPU yet still at stock 1200MHz, but I have flashed its BIOS for unlocked voltage.