overclock check

hey, I've just done my very first overclock on a new system I built myself. Just hoping someone can check my numbers to make sure I've done everything ok!

I've got an Asus Maximus Formula mb with an Intel E8400 cpu.

I've increased the FSB from 333 to 445 giving me a nice 4.005 Ghz

low usage temps are about 34 35 degrees, and after running prime95 for 30mins, are at about 60, 61.

last time I ran prime95 one of the threads stopped after 30mins

I haven't increased the voltage because its at 1.4v atm

are these numbers ok? should I increase the voltage or one more step, or could increasing my chipset's voltage help? (its on auto atm)

Think I have my memory at 1.9v but don't know if I even need it that high for the system to be stable.

any comments will be very helpful

thanks

I have Corsair 2x2GB DDR2 800MHz/PC2-6400 XMS2 Memory

So should I increase the memory voltage and see if it can stabilise my system, or just but it up anyway, also increasing the core voltage?

how about other voltages, like the northbridge. problem is I don't know the current voltage as its just set on auto.

thanks for the help so far

i can run the blend test for hours with no errors, but the small ffts test only 30mins or so before an error.
I've increased the voltage, but its now set at 1.425 in bios and still making those errors.
Is it safe to increase more? temps still maximum of 62
thing is cpu-z tells me the core voltage is 1.360v
can someone tell me whats safe to go up to
and would increasing my nb voltage help?