My guess is that it is essentially the same board but there must be some small difference.
The D975XBX2 is listed on Intel's website but the D975XBX2KR is NOT !! So odd, they definitely make a D975XBX2KR since that model number is all over the web . . . yet there is not a single mention of the D975XBX2KR on Intel's website. Anyone have an answer to this vexing mystery ??
And while you're at it . . . I also saw the BOXD975XBX2 and then BOXD975XBX2KR for sale. What does the "BOX" mean ? It can't really mean the obvious since the regular old D975XBX2 also comes in a "BOX". Thanks in Advance !!