OK....that sounds very good!! You are certanly welcome, man.
 
Vcore temps in the low 70's under IBT load is perfectly normal....it is the upper 70's that you want to eliminate....however; your idle core temps should be down in the low to mid 30's optimally so, anything that you can do to accomplish that would be better for your chip. Hopefully you will be able to lower the vcore a few settings which will help. Keep taking it down 1 setting at a time and IBT it until you fail the test or get a BSOD....then go back up to the last one that worked and test it again just to be sure it passes again and that is where you'll want to run it. After you get that set then, try dropping your CPU FSB voltage down to 1.3v and see if it still passes IBT, that will also help. Once you determine where that needs to be you can do likewise with the SPP and MCP voltages individually...maybe each one of them can be lowered one knotch too.
 
EDIT: I really like running my system at my CPU-z Validation link settings but, that is just too hot for the warm weather (winter only) so, I know what you are experiencing. I have had to drop my OC back down to 1800MHz already. I cannot install an A/C in my computer room....thankfully, the computer room is a straight shot down a hallway from the air-conditioned living room so, I set a fan to help blow the cooler air down the hall. The biggest help is that at 1800MHz, my CPU only needs vcore set at 1.325v in the BIOS.....VDroop takes it down to 1.288v in Windows.

Hmmmmmmm.....no report yet. I wonder if it is working fine and he is enjoying it....or did it blow up!!??!!

No need to apologize, man.......I was just wondering how your system was doing.

According to what I see in your SS...the failure does not appear to be heat related....take vcore up 1 setting and retest.

PhoenixBird... Not to to step on JefferyHam but you could have 1800 "hole" try rising your FSB to 1810 or 1820 and lower your vcore to 1.40.
Jim

I have tried that JeffreyHam, but i randomly get my apps to crash and CRC errors.
 
What if i return to 1333Mhz underclocking the memories? I could live with 2.6Ghz with 8GB of memory.

Hey Jeff i see that we are both online at this moment, i have been going back to the beggining of this post and re-testing everything from the start to see if i missed something
 
Currently im testing with Prime95 Small FTT test to see how much it takes before it goes boom! I have been reading all this week at work on this forums an older forums to get an idea of how tricky is the 790i i have found actually intesting the manipulation of GTL's to get stable oc's but it seems like kinda of "luck" to get it work properly since the 790i doesnt like manual settings on the GTLRef
 
I havent given up on getting something decent with this, im open to any ideas actually, what would you suggest?

You may want to consider updating your BIOS to the latest version....it could make a positive improvement.
 
EDIT:  http://cdn.evga.com/bios/NF79_P10.iso  Use this program (ImgBurn) to burn the iso file to a CD at the slowest speed available:
http://www.imgburn.com/index.php?act=download 
 
Go into BIOS and load Defaults.....then, reboot to the CD and the update will run.

PheoenixBird... If you update your bios you may want to thhink about trying your FSB to 1600 again... just a thought.
Jim

No problem.......the P10 will contain the updates included in P09....it should go well but, let us know if you need help with it.

As im writing this from the very same computer, i think that the firmware upgrade was a total success :P
 
Now, from where should we start? From 1600Mhz or 1800Mhz?
 
Awaiting for your instructions.

Testing right now on 1333Mhz using settings from post #42 it passes memtest for 1 round, but it always shows 1~3 errors during Test 7 on the second pass.
 

On it! it will probably take all the night, but i will be back in a while with the test results.

I see you are here....hope you have some good news to report.

Well...at least it is stable at stock speed.