I've read a lot of speculation on how a D0 differs from the C0 and C1 (yes Virginia there is a C0 and C1 stepping).
Overclocking reports seem to indicate there are thermal and or voltage improvements in the D0 stepping. On this score I have no new information other than to say Intel has not changed the electrical or thermal specs.
What Intel has announced, is a fix for a number of errata with the D0 stepping. The Core I7 family lists 102 errata. The D0 stepping fixes 16 of these and introduces one new one of it's own.
I condensed the Fixes into a word doc that you can download here
http://www.filesavr.com/corei7differencesbetweensteppings
or for those that are leery of downloading DOC files the relevant part is shown below
Link to JPG http://xs139.xs.to/xs139/09186/errata307.jpg
Overclocking reports seem to indicate there are thermal and or voltage improvements in the D0 stepping. On this score I have no new information other than to say Intel has not changed the electrical or thermal specs.
What Intel has announced, is a fix for a number of errata with the D0 stepping. The Core I7 family lists 102 errata. The D0 stepping fixes 16 of these and introduces one new one of it's own.
I condensed the Fixes into a word doc that you can download here
http://www.filesavr.com/corei7differencesbetweensteppings
or for those that are leery of downloading DOC files the relevant part is shown below
Link to JPG http://xs139.xs.to/xs139/09186/errata307.jpg