eehhh....well....at clubit.com you can get a q6600 with g0 stepping, so i'd go there because they they guarantee it. So rma the quad you got now and go get yourself a g0
btw, from what i've seen q6600's that are g0 stepping tend to be able to overclock to 3.8 ghz, and some even get up to 4 ghz... so going with a g0 would be the best way to go i think...
i wouldnt go through the hassle of RMAing it just keep it and you will be able to get it to around 3.2-3.4 on air
which will be a really good performance increase, i seriously doubt you will notice the difference between that and 3.8 g0 stepping
Odd, I ordered about a week ago, before ordering I emailed them to see if I'd get a g0 stepping, and they told me they were all out of b3's.. I got 2x SLACR's from them.
i wouldnt go through the hassle of RMAing it just keep it and you will be able to get it to around 3.2-3.4 on air
which will be a really good performance increase, i seriously doubt you will notice the difference between that and 3.8 g0 stepping