Quote Originally Posted by iocedmyself View Post
well of course they aren't day to day clocks which is kind of my point, the glass cieling for i7 is 800mhz below phenom II (thus far anyway) I7 has trouble hitting anything past 3.6 on air as has been shown by several reviews, at least one posted in this thread. While Deneb routinely seems to hit 3.9-4.1 on air, someone here had hit 5.6 or 5.7 with cold which isn't far off from record.
4ghz is possible with air on Ci7 with HT off, just look in the Ci7 ocing thread. The only problem are temps with HT on and they depend strongly on voltges.
It make a huge difference if HT is enabled or disabled, disabling HT reduces temps for ~10-15°C

3.8ghz is no problem on air for most Ci7 with HT on and a good aircooler such as a TRUE or a Noctua U12P. Everything above is still possible but temps get in the critical range 90°C+ so WC is recommended or disable HT.