intel generations?

[intel_outside]

regarding the generations, ive heard that the previous gen intel chips not compat with the new gen chips etc,

my new MB- Supports 3rd Gen Intel Core i7 / Core i5 / Core i3 / Pentium / Celeron for LGA1155 Socket

looking at a new intel chip to go on this board ive found and i5 2300 and an i5 2500 (£20 difference)

would either chip fit the board and which one would you recommend?
thanks

 

[intel_outside]

forgot to mention
http://www.overclockers.co.uk/showproduct.php?prodid=MB-202-MS&groupid=701&catid=5&subcat=

 

[intel_outside]

let me rephrase that

if i went for the middle cpu (ivybridge - 3550) it supports Dual channel DDR3 1333/1600/1600+ MHz, and the MB supports DDR3 1066 / 1333 / 1600 / 1866 / 2133 / 2400 / 2677 up to 32GB Max

when i buy new DDR3 ram i would simply buy and match it to both these correct?

 

[intel_outside]

thats next on my list, as my current pc uses DDR2 so therefore becomes void with the new board

 

[intel_outside]

thanks for all the suggestions, im going to go with the kingston hyperX 8GB

my list is almost complete