Those voltages seem really high for a D0 i920.
Most people on here are hitting 4GHz with less than 1.3v Vcore and QPI.
There are plenty of threads on this board that will help you out.
See JonJ's thread
here for some useful links on how to get your chip to 4GHz.. if you look at the Gigabyte 4GHz o/c guide, just take into account that this guide was written for C0 chips, so the voltages they used are irrelevant, as D0 chips generally require lower voltages to get stable.
Well, I should say MOST D0's need lower voltages, there are still some D0's that are poor clockers, and I have even came across some that cannot hit 4GHz no matter how much voltage you pump into them.
Also, I have noticed that using to much Vcore or QPI can result in instability to, you really have to try and find your chip's sweet spots with these voltage settings, if you look at the EVGA i7 voltages explained guide in JonJ's thread, it explains what each voltage is for, and how it can help you acheive a stable o/c..
A few things that might be causing your system to cripple is if you have got Performance Enhance set to Turbo, if you do, this can cause instability, so try knocking it back to Standard.
I find that having Loadline Calibration enabled makes it a lot easier to stabilize your o/c, however if you choose to keep this disabled, then remember that you will have to compensate for the Vdroop that happens when this is disabled, the UD5 tends to have about .09v of Vdroop.
Remember to that uncore multi should be at least 2x your mem multi, so if you use 8x mem multi, uncore needs to be set to 16x, you can use higher uncore multi's, but there isn't any need to, twice that of the mem multi is what most people use, although I have heard a few people say that raising it up to 17x instead of 16x has helped stabilize their o/c.
Another thing to do is before you start tweaking BIOS settings, is to first load optimized defaults from the main BIOS screen, then save and exit, then re-enter the BIOS and start your tweaking, I was advised to do this from a person on another forum, all it really does is sets CPU and PCIe clock drive to 800mV and 900Mv respectively, this seems to help stabilize your o/c also.
With the QPI multiplier, just set this to 36x (the lowest value) as you don't really want to use any of the higher multis as this is going to cause problems as well.
In the Advanced Clock Control section of M.I.T I set my PCIe clock to 102MHz instead of leaving it on auto, as people seem to say this has a positive effect when clocking your chip, tbh I haven't tried leaving it on auto to see if it does make any difference, so I can't say for sure if it helps or not, I just like to have most things set manually in the BIOS.
If you haven't set your RAM timings manually, then please do so, set them according you your memorys spec.
Set IOH Core to 1.140v as well, because the motherboard will overvolt this if you leave it on auto.
Have a read of some of those guides I posted on Jon's thread, and try some of the suggestions I have given you here, and let us know how you get on.
Good luck mate.
