That review was actually the tipping point as far as my deciding what memory to get! Cadaveca is someone I have a ton of respect for, as he is incredibly strict and very exhaustive in his testing methods. Just a little info that I got that wasn't in the review, is that the kit tested is considered about "average" in terms of overclocking, with many kits being even MORE capable, i.e. DDR3-1866 7-7-7-28, 2133 9-10-10-28, 2400 10-11-11-30, etc, all at stock voltages. You REALLY DO NOT NEED 1.75V unless you are trying to go for something like DDR3-2560 11-12-11-32 or any other high-speed/relatively-tight-timing combination above 2400. Giving it a SMALL bump up to 1.675 CAN sometimes provide that last little bump needed to reach that one extra step up (or down, as it is with timings), but really the stock voltage seems perfect for these chips!
I am really sorry to hear that you're still having so much trouble with this memory kit
I do wonder if there is something else that is causing a conflict, as the ups-and-downs you've described sound more like an issue between two devices rather than an issue confined to just one. Looking at your system specs, you have a quite nice setup with some very quality components. Unfortunately, as well have all learned, sometimes even the best equipment stumbles: spending $158,000 for a Porsche 911 GT3 RS doesn't mean that the piece of art, err... engine, doesn't need servicing or that the engine is completely free from the possibility of failure. To continue the car analogy, once you take your GT3 RS and start adding parts, say:
a Fabspeed Carbon Fiber Dual-Intake system with IPD Intake Y-Pipe/Plenum, Bored Throttle Body, Fabspeed Ceramic-coated equal-length tubular Headers, a full-titanium Akrapovic Evolution Race exhaust system with a test pipe (removing the catalytic converters), Under-Drive Pulleys, an ACPT Carbon-Fiber Driveshaft, Schrick Stage4 Camshafts, some Dymag 19x9.5/19x12 Carbon-Fiber/Magnesium ultra-lightweight wheels with Michelin Pilot Sport Cup R-Compound Tires, Custom Dyno-Tuned ECU Tune, Plus-Sized Titanium Valves, replacing seats with the OEM European Carbon-Fiber extremely-lightweight seats, having a 10-point Roll Cage welded in, KW Variant Clubsport coil-overs, 110% thicker sway-bars, semi-solid and solid bushings/mounts, a full top-of-the-line Carbon Fiber Aero kit, 8.5lb ultra-light flywheel and Stg2.5 Kevlar clutch w SS Braided clutch line, Short Shift Kit, Carillo Forged Extreme-Performance pistons and Rods, APR full-engine bolt/stud kit, fully-baffled oil pan, Quaife Multi-Clutch Limited Slip Differential, and so forth...
You end up with TWO things:
1) An extremely powerful, insanely fast, ridiculously amazing near-telepathic handling, and the ability to out-run just about anything as much as 6x the cost around a road-course
2) A very picky car that requires a lot of attention, care, maintenance, and IMMENSE amounts of research before modifying a single thing to ensure that the new modification won't interfere with or cause issues with ANY of the previous modifications alone or in various configurations
So, when putting together "Porsche" Gaming Computer, and then trying to eek more performance from it, there are a huge number of variables involved beyond just the memory itself.
I would try to remove/replace one component at a time, then test the computer with your desired overclock. My bet is that something like the sound card will end up being what is causing issues, and hopefully it is something as simple (to fix) as a driver issue or the like. I'd do this for everything possible, including the GPU, Sound Card, PSU even...
If you can rule everything out with relative certainty, then you will want to look at the RAM itself.