i7-920 CO upgrade to i7-920 DO or i7-930?

[cdolphin]

I have two good options currently:
buy a USED i7-920 DO for $200 shipped {screenies at 4.2 with 1.366 vCore HT on, stable, batch will be known tomorrow, before I buy}
buy a NEW i7-930 DO for $230 shipped-batch number #30014125

I plan to sell my current i7-920 CO for relatively cheap (140 or so shipped? However much I can get for it) to recuperate some of my loss.
What do you guys think is the best move? I have been putting a lot of money into my rig as of late, and I feel I may owe it to myslef to do this small CPU upgrade that is relatively inexpensive, the cost of which is the same as the cost of my fans! (18 x Zalman ZM F3's for my two 3.120's and my case's side panel, as well as two which are currently undecided :P)

Input would be much appreciated

[zsamz_]

4.2 ht is not impressive with 1.36v
either get a good batch or a 930 "you might get lucky"
i'd be patient and try to find a nice batch

[kagula323]

buy a NEW i7-930 DO for $230 shipped-batch number #30014125


if i'm not mistaking ... batch number #30014125 is one off the better ones for I7-930 ... so I think u should go and buy it! (search for the batch ... beauce this or the one with 124 in the end is considered to be a golden batch for i7 930)