After some contact with their customer service, I notice some differences:
EDU:
No 80X EDU models, there're 2 classes of EDU, 812/814 EDU & 822/824X EDU
BW=120MHz for 812/814X EDU, 220MHZ for 822/824X EDU
All model 100 Mpts/ch(Single Chanel), while 50Mpts/ch for 804/814, till 824X HD will be 100Mpts.
Seems to have more integrated AWG options for teaching.
In sum, most major differences are:
(802/804+812/814)HD 100MHZ , 50/100MPts --->(812/814)EDU 120MHZ, 100MPts
822/824HD 200MHz, 100MPts---->822/824EDU 220MHz, 100MPts
So, with EDU version, you get +20MHz BW at least;but the prices are still unknow.
There are ~30USD coupon for SDS800X HD in TAOBAO, my guess is that the EDU will keep the same price without 30USD coupon, for the extra 20MHZ I think.
But the weird thing is, if this EDU version of SDS800X is for China's domestic education market,
Why do they still have Language options of English and some others?