It's not exactly like that, I'm afraid... actually, here is the thing: <b>Electrical signals travel at the speed of light</b> in the medium they are travelling through, period. So an electrical signal travels through copper as fast as light would travel through copper. Period. Electricity already travels at the speed of light, even inside our processors, and it will neither get faster nor slower...
Picture this: if you're on the beach, immersed in water, and lightning strikes, you'll see the lightning strike exactly at the same time you feel the shock. You might not feel much later, though...
What changes is the operating frequency of the circuitry...
<i>*crazy imagination leap coming*</i>
But hey, you might be able to apply specific distortions in time that make you process faster because of time warping. That might be conceivable for the next, say, one thousand years. It's very far-fetched, but as far as physics is concerned, it might just be possible. Time warping exists, but only in the most extreme conditions... So if you had a gazillion watts to spend, you could do it...
<i>*crazy imagination leap over*</i>
<font color=red><b>M</b></font color=red>ephistopheles