Loonym: I'm using a Xigmatek HDT on a DS3L and it covers up to 4.5ghz ok on an E0 e8500 (see above posts).
However, the DS3L will fail Prime or Orthos after 18min because the NB fails due to heat for anything over 4.3ghz..
I put on old DFI lanparty NB fan over the DS3L NB with doublesided tape and it's stable for me now .