I am looking for new laptop or ultrabook. So I am asking here instead of making new thread.
I have seen dell inspiron 15z having spec. as below.
1.PROCESSOR3rd Generation Intel® Core™ i7-3537U processor (4M Cache, up to 3.1 GHz, Discrete Graphics Card)
2.MEMORY8GB 2 DIMM (4GB x 2) DDR3 1600Mhz
3.HARD DRIVE500GB 5400 RPM SATA HDD and 32GB mSATA SSD
4.VIDEO CARDNvidia® GeForce® GT630M 2GB
I want to ask that what is difference between SATA HDD & mSATA SSD storage drive.
Dell provides two types of graphic card(here i am talking about 2GB). 1st is Nvidia® GeForce®,2GB which is integrated with processor circuit or mother board. 2nd is ADM graphic card(2GB) which is dedicated one(means not integrated on mother board or having separate circuit). I have heard that when ADM graphic card is not in use it work as extra 2GB ram(so total becomes 8+2) which is not the case for Nvidia GeForce graphic card. Is it true or right? Which one of above graphic card will be good in performance??????
Other thing i want to ask is that in processor specification (4M Cache, up to 3.1 GHz) is written. I have seen that as xM catch size increases clock speed in GHz reduces(generally from 3.xGHz to 2.xGHz). So which should be considered, high clock speed of high catch size????
In intel processor one is ultra processor and other is QM-mobile processor(not mobile phone processor

) which is available in inspiron 15R so what is difference between them???
I am also looking of for XPS 14, but it is available in i5 everywhere i found it. Is it available in i7 processor???
Please let me also know about other good laptops of ultrabook....

and sorry for asking these much questions...