I overclocked my E7500 to somewhere around 3.6 ghz though the system was stable but I saw a lot of artifacts while playing Crysis 2. But when I played at stock speeds artifacts were nowhere to be seen. Cooling and power supply shouldn't be a problem as I have CM hyper tx3 evo and Corsair GS 700. Could it be some wrong overclocking like clocking RAM with CPU. Please advice :unsure: