http://www.hwbot.org/result.do?resultId=661126 - suspicious result
(some guys clocks their Celeron s478 2.4GHz up to 3.4-3.5GHz and got ~71..71.5s; but there is only 3.164GHz and 70.38s.. perfect tweak? I don't think so.. perhaps, it's PiFast 4.3)
Please check it..