Intel ships 4.4 Ghz Westmere dual-cores.

[saaya]

the fastest northwood was 3.4 and was only available in limited quantities
then there was an extreme edition gallatin core based chip that came at 3.46 with massive cache and higher fsb
after that prescott came out and only went up to 3.8, also only in limited quantities if i remember correctly...
there was also a prescott xe but it only came at 3.73 and was slower than gallatin at 3.46 if i remember correctly

its good that intel didnt release a 4ghz prescott...
other chips they shouldnt have released are their 1ghz+ p3 chips and their first dualcore chips (dual prescott, OUCH)

actually i think the problems was not good enough cooling at least for prescott and smithfield...
if theyd have bundled proper stock heatsinks for those chips, i dont think anybody would have cared... i mean vgas are breaking the 300W barrier now and people dont care as long perf and price is alright...

i remember craig barrett, or was it otellini?, getting down on his knees in front of an audience and apologizing for not releasing a 4ghz chip.
that was.. one of the most bizarre moments in tech history i think... never understood what the big deal was... nobody cared about 4ghz, it was about intel not being competitive...
even IF theyd have had a 4ghz chip at good temps and low price that wouldnt have solved their issues...