Hmm. I know that some 680i boards are 1333mhz, but not all. Also, even though it is older, the 680i still seems immature compared to the P35 due to all the random overclocking and compatibiliy issues of top 680i boards like the Asus Striker. I got my Gig P35 board with a E6750 to 3.4 overclock easily on air cooling. From my experience, the P35 has had no issues.