New Crucial 1.5V DDR3 Kits

[Alex-Ro]

Ok,so solving the mistery regarding crucial chips:

M revision,D9PFJ,loves the voltage,can be found on parts ending in 16FMX,scales beyound 2V,maximum reached with 1.92V was 2400 8-8-8 1M,2400 9-8-8 32M stable,need more volts,seems 2400 8-8-8 is doable.

K revision,D9PFT,D9PSH,D9QMS,D9QMT does not like anything higher that 1.72,in fact stability@24/7 seems to scale till 1.69V.My modules can do 2200 8-9-9 memtest and 2400 9-10-10 half stable(50% memtest yields errors),2400 9-10-9 32M,this si D9PFT.Seems like D9QMS runs better as 2 people already reached 2400 9-9-9 32M,will test some low profile sticks using D9QMT tomorrow.

D9PFJ on Crucial Ballistix Elite 1866 C9 1.5V,part number ending in 16FMR:





D9PTF on Crucial Ballistix Elite 1866 C9 1.5V,part number ending in 16FKR:




2400 8-8-8 using ivy bridge+z77+1.92V:




General observations:

-Run very tight tertiary and secondary except TRFC.
-D9PFJ scale extremely well with cold,going from 22 degrees ambient to 5 degrees yielded 100 mhz increase,will test on ln2 sometime,if everything is fine this should crash and burn any psc or elpida bbse based modules.
-Need VERY HIGH VTTDDR when going past DDR3-2200 to reach stability,meaning that 2400 needs 0.92 VTTDDR in order to complete 32M(both M and K revisions).
-K revision will not run better on cold air not even by 10 mhz,0 scalability
-K revision is very sensitive with voltage,for example 2200 8-9-9 memtest 1.68V give error in 10 seconds,1.69V runs memtest all night long