Vmem readout discrepancies on Z87: ver4.16 vs ver4.36

[TaPaKaH]

I come from the "world" of memory binning where each 0.01V is important.
Today I have noticed that hwinfo32 versions 4.16.xxx and 4.36.xxxx have different readouts from supposedly the same ASUS EC sensor at same value (1.980V) set in BIOS:
ver4.16 reads 1.97-1.98V: http://abload.de/img/snaphsot0004sfu8k.png
ver4.36 reads 1.99-2.00V: http://abload.de/img/snaphsot000398uxi.png
Which hwinfo version should be seen as more accurate?

 

[Martin]

I have checked again and the later HWiNFO version should be accurate.
What do tools like ASUS AI Suite report ?