tcc5 is apparently the replacement to tccd since it has been rumoured for quite some time that samsung will be discontinuing the tccd chips.
I had heard rumours of rev2s using tcc5 chips around when I was making my purchase, but they were really sketchy and I couldn't find any solid evidence at the time so I thought it was a lie. Although still no places have yet to report the rev2s using tcc5, coming directly from an OCZ employee I think that seals the pact...
Especially considering how they've dropped in price as of late is not very reassuring.
I'm pretty much convinced I have tcc5s now since stamped very very small in the corner of the heatspreader label you can make out a v1.1 and I'm pretty sure that means they're tcc5s. I don't know how to take it yet as I haven't gotten a solid answer yet, some people are saying tcc5s are worse than the tccds and cap around 260MHz, but I've still seen some people hitting 300MHz. Frankly if mine cap at 260 I'll be sending them back to OCZ since 10MHz more than what they're rated at is not very satisfying at all.
Now I gotta completely research tcc5s which are like totally underground, I think they like a bit more vDIMM than the tccds but I'll have to play around and see.