how big is big enough

[jakenbake213]

ive just recently started mining bitcoin im just running it off of an a4 laptop with a radeon hd 7420g gpu.ive researched a couple asic miners looked at an external box and a usb erupter i have 2 questions what would make mining efficient on my computer and im wondering if i have acces to 50 computers if i run miners on all of there cpus would that total up to anything close to running a single erupter on my laptop

[backtrackit]

no

[-ck]

Running more computers at a loss each does not make it magically profitable. Losing a dollar a day per computer means if you run 50 of them you're losing 50 dollars per day.

[DanielVG]

depends if you're paying the electricity for the 50 computers.
But even then, you probably won't even come close

[DrG]

You're using the wrong hardware to mine bitcoin.  Bitcoin is now relegated to those who have or will have efficient ASICs, not low capability erupters.