I hope you realize that of all the CX series, only the CX 430 V2 edition was ever vetted (jonnyguru in this case). The other editions were built on pretty terribly. Using other CX models to assert the capability of the CX 430 doesn't make sense as different PSUs in the same line could be built by different manufacturers, built to different specifications or built off different platforms. We expect as consumers that all products of a brand has similar quality and even more so within a product line; however, this doesn't necessarily hold true as with the case of the CX 430.
Moreover, there has been 3 editions of the CX line. The newest third edition has only recently come out in the last few months, fixing a lot of problems with the CX PSUs at higher wattages. The newest CX 430 still follows the quality of the older CX 430 V2
which is vetted.
Unless these
professional complaints were directed towards these newest models, your assertions are about as good as saying TX PSUs are good because they're Seasonic (when in fact we know that the newest models are CWT).
Its 20 bucks because its on sale. I suggest you research some of the glowing reviews the CX 430 has received in the last year or so.
False.
The test was done in a full tower case: Thermaltake Spedo Advance. 2x 120mm, 1x140mm, 2x230mm fans. I think it would suffice to say that the increased power consumption of a 3930K OC compared to a i5-3470 will overcompensate for the additional peripherals such as HDDs and charging several USB devices.
By the way, both the i5-3470 and 660 are middle-high end parts, not
low to low-mid end parts. By saving some money on
non-performance parts like the PSU, while still maintaining an adequate environment for performance parts, the OP is able to siphon that money in getting better performance components. Had the OP instead gone with a $50 PSU and cheaper GPU (650 Ti or 7850), he would be worse off and much more likely to need to upgrade his rig in the future.
Now lets be honest, in a $600 rig, whats the chance of upgrading to a $400+ card in the future? Making the assertion that a user will most likely upgrade to a higher tier card of a subsequent generation is misinformed. Like I said before, 660 will probably upgrade to 760 or 860 instead of 780 or 880. If the OP was to make this upgrade (say he quits WoW and wants to play BF4) whats to say adding a $40-50 PSU (on sale) would make much of a difference when purchasing a $400 card? The most cost effective route is to purchase the $20 CX 430 because we know for a fact that it is sufficient for the rig listed. More often than not, paying more for upgradability up front ends up as a waste of money. The most poignant example of wasted
futureproofing is going for a SLI/CF capable rig without clear intention of adding a second card in the near future (within 1 yr).