> Your battery is going to suffer because of the extra ram as well.

No, it won't. The power drain of merely refreshing DRAM is negligible, it's no higher than the drain you'd see in S3 standby over the same time period.

I suspect this is one of those "it depends" situations; does the 128gb vs 64gb sku have more chips or denser chips? If "more chips" probably it'll draw a tiny bit more power than the smaller version. If the "denser" chips, it may be "more power draw" but such a tiny difference that it's immaterial.

Similarly, having more cache may mean less SSD activity, which may mean less energy draw overall.

If I had a chip to put on the roulette table of this "what if" I'd put it on the "it won't make a difference in the real world in any meaningful way" square.

Given the DRAM refresh is part of S3 standby, I'm afraid this is circular reasoning.