we have been recently too busy searching for conroe info date launch etc and we have forget that recently there were 0.065 microns version of processors Celeron D which are based on C1 stepand core CedarMill. .this steppeningis hard to findamong retail processors Pentium D 9xx,. Moreover, in the end of July these processors become cheaper, and can pass on stepeningD0 in the autumn.
By the way, many mainboard manufacturers in the lists compatibilityof 0.065 microns Celeron D processors Hint for the exictance ofstep B1. Certainly, it not accident but is overclockingsuch processors can hardly be worse. From economic point it is more favourable formanufacture to usebudget processors withold core stepening.
Celeron D on the basis of 0.065 microns coreCedarMill was overclockedup to 5.0 GHz with use of powerful air coolers . thegood overclockingpotential promoted not only decent frequency potential of 0.065 microns cpubut also a high nominal multiplier of these processors. today on pages of forum XtremeSystems.org there was a description of experiment on overclockingthe Celeron D 356 (3.33 GHz) processor stepC1 up to 5.4 GHz withusing an air cooler.
More precisely speaking, it was possible to take a screenshot of 5.4ghz GHz only, but the voltage on the core was low enough - 1.4v.
note that runing at 5.1ghz at this low voltage cpu has passed stability test A gain of frequency 50-60 % without special efforts - not all today processors are capable for such high overclocking potential.
we appreciate the advantages of the high nominal multipler(25x) - for overclockingup to 5.4 GHz .the system bus was at only 218 mhz. Formally processors Celeron D support 533 MHz busthat corresponds 133 MHz fsb . Versions Celeron D 3xx on 0.065 microns have twice greater cache of the second level in comparison with predecessors: 512 KB vs256 KB. this will also affect the system performance, plus the great overclocking potential.