cant get my e8400 past 4.10ghz

No, not all C0's are good. Only the old ones. It also looks like you already passed the maximum recommended voltage (if you follow Intel spec).

ya intel says 3.6v is the max. cant get it stable at this speed with anything lower unfortunately. although i have met people with the vcore a 1.40v. my chip is about a year old, bought it right before the e8500 came out. trying to figure out why my voltages need to be so high though.

your vcore is fine. what kind of NB voltage are you using??

i will have to double check when i get home, totaly just blanked on what its set to.

These E8400 C0's are a real challenge for overclockers, because they usually won't past even the 4.00GHz easily.

Intel E8400 @ 4.00 GHz, 1.28V, my god i wish i could run it at 1.28v for mine

The highest I have ever got my chip stable at is 4.2 but that was using 1.39v. Stick with 4 and use lower volts.

northbridge is at 1.23v, vcore is 1.38.
bus speed is 450mhz with 9x multi, so its at 1800mhz atm with the cpu at 4.05ghz.
ram is at 800mhz, 6-6-6-16-2t timings

any ideas on how i can get this puppy up higher? and how to do so with a lower voltage? my vcore seems so much higher then everyone elses at this speed.

any ideas?