Quote Originally Posted by OM DUST View Post
Did you ever get an answer?
No, but since then situation has changed for me.

I've got myself some new memory, because my Crucial Ballistix PC2-8500 ended up not being compatible (not "faulty" per se, just not compatible after many tests were done at my local store's tech department). I've changed for a 4GB kit (2x 2048MB) of OCZ Reaper HPC, at PC2-6400. I've overclocked the memory from 400Mhz to 499.20Mhz exactly with 2.192V (that's an added +0.35V in the BIOS), and it is rock stable (fully Memtest86+ 2.00-tested and stable).

Right now, as I type this, Orthos is running under Small FFT's test for the CPU. I've isolated the memory already, so no need to run a Blend test (although I might do it anyway for peace of mind's sake). I've overclocked the CPU/FSB at 416x9 (3744Mhz), at 1.35625V vCore in the BIOS (giving me 1.328V in CPU-z), and after two hours it's still green... but two hours is nothing, I'm aiming for a solid 12 to 18 hours test. The FSB voltage is augmented by +0.25V, and the MCH (Northbridge) by +0.200V. The temperatures are 27ºC at idle and around 54ºC on load.

My days of instability issues are behind me now. It was my Crucial memory which was causing me bad problems (even the BIOS got struck by a Bad Checksum issue). Now that I'm back with OCZ (I've had OCZ during the DDR1 days) I feel comfortable and reassured, all is good, for now of course. I don't think that I'll go higher than 3.74Ghz, it's a sweet spot for me.