Calculate computer performance increase?

I'm trying to figure out how to calculate the increase in performance between PC configurations.

For instance:

PC X takes 0:13:15 (h:mm:ss) to render a 5 minute video

PC Y takes 0:04:31 (h:mm:ss) to render the same 5 minute video

Basically, how much faster is PC Y than PC X in this situation?

It's confusing for me because the new value is lower than the original. I tried the formula

(increased amount - original amount) / original amount x 100

but it gives me a number that doesn't look right.

I hope I can get an answer to this, I'm starting to feel dumb (Headbang)

Re: Calculate computer performance increase?

Quote:

Originally Posted by

**ziggy** I'm trying to figure out how to calculate the increase in performance between PC configurations.

For instance:

PC X takes 0:13:15 (h:mm:ss) to render a 5 minute video

PC Y takes 0:04:31 (h:mm:ss) to render the same 5 minute video

Basically, how much faster is PC Y than PC X in this situation?

It's confusing for me because the new value is lower than the original. I tried the formula

(increased amount - original amount) / original amount x 100

but it gives me a number that doesn't look right.

I hope I can get an answer to this, I'm starting to feel dumb (Headbang)

The processor speed is inversely proportional to the time taken for the standard task. So use 1/t rather than time in your calculations.

CB

Re: Calculate computer performance increase?

OK, now I'm an idiot.

Can you explain any further?

Re: Calculate computer performance increase?

Quote:

Originally Posted by

**ziggy** OK, now I'm an idiot.

Can you explain any further?

First get rid of the minutes and seconds format, it's much easier to work with only one unit.

PC X has a processor speed of $\displaystyle \dfrac{k}{795}$ and PC Y has a speed of $\displaystyle \dfrac{k}{271}$ where $\displaystyle k$ is a constant.

Can you continue?