What does it say under system type than? Could you please provide a screenshot?
About allocating less memory to IGP, 4 years ago I came across some custom build of ATI drivers
pack (or was it a modding tool for ATI drivers). Anyway, I was able to edit that RAM parameter in the driver
file. But I do not know if something like this exist for modern Intel cards, plus driver will became unsigned and won't be easily accepted by Win 64 bit.