What's likely going on is that the 2.30GHz is the maximum speed each core can go, and the 1GHz is how much it's actually using due to a power saving mode in Windows, where it only uses as much power as your programs are actually using at the time. If that's the case, it should bump up to around the 2.3GHz if/when it's needed by Chromecast. That said though, I've found that this power saving mode will cause the clockspeed to fluctuate in a way that ends up being detrimental to performance (with Intel CPUs I've used anyway), so I still like to disable it entirely.
To do that, go to your Control Panel and click on Power Options, or just type "power" into your start menus search bar and click "Power Options" from the items it shows. If you have a "High Performance" option there, just select that and check CPU-Z again; it should be showing the full amount now. If there isn't a High Performance option, go ahead and click "Change plan settings" on whichever plan you currently have selected there, and then click "Change advanced power settings". In the new window, find the "Processor power management" item and expand it.
You should see both "Minimum processor state" and "Maximum processor state"; expand each of those and change their values to 100%, then click Ok to close that window. As long as you modified those values on your currently selected power plan, it should force your processor to run at its full speed regardless of what programs you're running.
"I think that the problem with this video is it is highly derivative of many popular bands within the genre. Although when viewed on its own merits, it does have a deeper groove. However what it has in groove, it lacks in originality. One can't help but be reminded of such bands as Pearl Jam, White Zombie, Suicidal Tendencies and other bands that bear the mantle of so called "Alternative Rock". One is even reminded of Lorie Anderson when she wore curlers. Hehehmhm! This video speaks less to the heart and more to the sphincter. In closing, I think Korn would do well to learn more from -"