Need to see some 4850's @ 750 MHz to see how they compare against stock 4870's.

I can't even imagine what will happen when the 4870's with AIB GDDR5 from Samsung and Hynix at higher binds will produce. We're OC'ing GDDR5 to 4.4GHz effective right now, but imagine 4.4GHz stock OC'd to 5GHz+

And that Diamond WC card that is unlocked to run core up to 950Mhz via OC (800 stock) suggest that with proper cooling, we can see 900MHz Oc's in the not too near future...

And I'm sure the pricing for performance of these cards must be really good for people who are going to buy them in bulk for pre-configured rigs...