list out all the OC setting like fsb, multiplier, voltage, ram multiplier, timing.....etc...............

set ur ram @ x2 (1:1 ratio)
timing fix it to 5-5-5-15

after happy wit CPU speed den only adjust the ram speed, den timing.

try up the fsb voltage.

or

try using 1 stick of ram 1st.
to eliminate dat it is not ram problem.

den u can try ur processor on ur fren's pc, to eliminate processor problem.

well, if really the processor issue, there is no stability problem @ stock speed just cannot OC, u can't claim warranty......

still, stress test it wit IBT or something.
if it doesn't passes, @ least u got something to argue went u sent for warranty

try IBT, if fail.
u can go claim warranty.
as long as retail & within 3 years.

it shud pass maximum @ least 5 loops.

dat means not stable...........

try wit OCCT, choose to only stress the processor.

it shud b smooth sailing 24/7.
but stress testing failure can also cause by other h/w such as mobo & ram.
try & put ur processor on another system & try stress testing again.

processor is design to run @ full load 24/7.
so it shud passes those stress test. 5 loops of IBT is consider as ngth, it shud b smooth sailing.

if indeed the processor got problem, u can argue to intel bout dis.
say something like u ran folding 24/7 & processor often causing crashes.

u 1st hav to answers some question & fill up some forms.
call dem & dey will email to u.

after dat intel will send delivery guy to ur location to pick the processor up.
now the processor is wit dem, obviously dey will test it.

u just hav to wait now.
intel warranty is usually quite fast, nvr > 2 weeks.