A Variac looks like a sci-fi laboratory prop. For some reason, I have three of them in my shop, and yes, one is just a book end. But they do have a useful purpose. Variac is a generic trade name ...

Anyway, pencil us in for that 400Hz 1440p'er, it sounds like a lot of fun. Speaking of which, ASRock also has some OLED gaming fun for CES, too, in the shape of another pair of gaming monitors.

Turn on the variac after making sure the light bulb is connected to the variac properly. Slowly turn the knob to increase the voltage, notice how the color of the filament changes. Return it to zero ...

Thunderobot introduces the CF25F400L monitor, a 24.5-inch display with a native 360Hz refresh rate, overclockable to 400Hz, priced at 1499 yuan ($206).