FYI you really should look around more than one store...I simply recommended that place because they have a good price on the Opteron, PE Rev2s you want from here
That's not TCCD. Thats TCC5. Which is not as good as TCCD. Besides, 2gb is the new standard.
OCZ switched to TCC5 back in April I believe due to TCCD shortages and the simple fact that they wanted to clear out their TCC5 stock...the stuff they're shipping now should be TCCD which is why I RMA'd my TCC5s, although they were still decent doing 280
As for 2GB being a "standard", that's a big no...as of right now there are two games that really need 2GB to perform at absolute highest levels, one being BF2 which is understandable, and the other being FEAR which is simply optimized terribly...apart from that 1GB is still perfectly fine for just about everything and is the perfect sweet spot for price and performance...plus the simple fact that 1GB modules use poor ICs therefore 2GB kits aren't going to overclock very well