I know its the same hardware, I have recently got a 32gig for dirt cheap. My 16gig is oc'd using F4 at 1.836ghz with other tweaks. I get solid 75-80 on lithium benchmark every time.
I got my 32gig, did the same exact setup, getting 95-105.
So my wife has a 16gig stock on 3.0.4 and she hits 90's normally.. So i just decided to overclock it without telling her and ran same setup and its hitting 76-80's all day.
Had a buddy do his 32gig to my setup that i have, he's hitting 103-108
on all we preform same steps,
on power cable.
So maybe we just lucky, but is the processor different in the 32gig?