My apologies, I was quite tired and it just seemed like a bit of a snide comment that's all. I think the amount I can contribute here is now limited as this is going beyond the extent of my knowledge. But if you did these things I mentioned (cut memory speeds / size, cut bus width, using cheaper non-solid-state caps, cheaper high airflow fan), how much would the reference PCB design need to be changed? The latter two I don't think would require any change at all (maybe a few slight changes for the caps). The bus width I'm not sure about, but I think the only major thing on there is the change in memory. Even still, it's not as if you're drastically re-designing the whole thing, just a few changes here and there.