Overclocking my E6300

Currently I have an E6300 OC'd to 3.25.

I was wondering if I could safetly overclock it to anything higher?

My motherboard is Gigabyte EP43-UD3L.

That would depend on a variety of factors, the biggest ones being your temperatures and cooler.

My temperatures, with a couple programs open (browser and such), on each core and on the motherboard seem to hover around 28-32 degrees. At load that increases to about 40-45. And I have an aftermarket cooler master cooler.

don't put dangerous voltages and sure

Could you be a little more specific? I have manula voltages right now and they seem to work but I don't know what "dangerous voltages" are.

Depends on the chip, mine used to get to 3.6 but used to crash at 3.65

Hmm. If I were to go up to 3.5 Ghz, what mulitpler and FSb should I use? Also what voltages would be considered "safe" for such an OC?