It you're talking about the 800 MHz speed you see in CPU-Z, that's normal. Haswell CPUs clock themselves down while idling to save power. The CPU should crank up to 4-4.4 GHz under load.
It you're talking about the 800 MHz speed you see in CPU-Z, that's normal. Haswell CPUs clock themselves down while idling to save power. The CPU should crank up to 4-4.4 GHz under load.