in 4 June in Price- list Intel appeared the processor Pentium D 915 (2.8 GHz), which was differed from model Pentium D 920 (2.8 GHz) in terms of the absence of hyperthreading technology HT. however, the majority of overclockers was not considered this essential deficiency, indeed processor Pentium D 915 began its path in life from steppinga C1, whereas first the Pentium D 920 was assembled from stepping B1 witch is dead " old stepping ", and second the D 915 will get the price reduction soon . the cost of processor Pentium D 915 (2.8 GHz) today formally is $200, but tomorrow it can it go down to $133. Strictly speaking, in Japan the box processor Pentium D 915 already cost $158.
We have already studied the characteristics of processor Pentium D 915 (2.8 GHz) with C1 stepping , which appeared in sale, we reversed attention to one fact - it did not support the EIST technology , which appeared in all processors Presler of stepping C1. let us recall that this stepping was has the minimum multiplier of 12x, which would allow to reduce the core frequency up to 2.4 GHz at idle. this would give a noticeable electric power savings and noise reduction
Actually, the first possessors is Pentium D 930 (3.0 GHz) with C1 stepping .note that multiplier of 12x is accessible for these processors - now the "frequency at idle time" is 2.4 GHz.
Processor Pentium D 920 (2.8 GHz) support EIST but did not receive the c1 stepping and still wil the old B1 stepping , Meanwhile we assumed that only processors Pentium D 9xx with frequency from 3.0 GHz and above will support EIST technology .
It is noted that under the conditions for the appearance of very economical processors Core 2 Duo the level of the heat emission of processors Pentium D 9xx with the overclocking can be seemed simply enormous, and the absence of dynamic frequency reduction technologies in the low-order models of processors can just make the situation even harder. in August- September will start new processors Presler on steppinge D0, with lowered energy consumption level , and the overclocking potential in same time for sure will be improved.
As a bonus we proposed the photograph of processor Pentium D 915 (2.8 GHz), obtained from the Japanese associates. In this processor undoubtedly there is nothing exotic, here is the stepping C1 of core Presler .waiting for the price reduction on the following week.
Processor Pentium D 915 stepping C1 distinguished by the SL9DA. Version on stepping D0 had the SL9KB.