BSOD Memory management

[snowdog]

I swapped my ram from 3x4gb Patriot Viper Extreme ( running at 9-11-9-27 1866 1.65V 2T) to 2x8gb Mushkin Blackline ( from a 32gb kit, XMP profile says 1866 11-11-11-27 1.35v).

Been getting BSOD's ever since. 5 now in the past 2 hours. While usually my pc was on 24/7 ( I really turned it off just once in a long time) with the old memory and solid.

I've tried running them at various speeds and volts:.
1866 11-11-11-27 2T 1.35v
1866 11-11-11-27 2T 1.65v
1600 11-11-11-27 2T 1.5v
1600 11-11-11-27 2T 1.35v

Keep getting random app crashes ( eg. chrome crashing, dropbox crashing or even explorer.exe crashing) and eventually BSOD's.

The odd thing is I ran the Windows Memory test and no faults were found ( with both!) ?

XMP is enabled in BIOS...

Currently on 1 stick and so far so good, ( though the last time with 2 sticks it lasted 20 minutes too). What do you guys reckon, faulty memory ? Or do I need to change anything else in bios coming from my 3x4gb to 2x8gb setup ? Sandybridge RAM controller. I've tried both slot combo's 2+4 and 1+3... ( With my old config I used slots 2 to 4)

 

[snowdog]

P8z68 Gen3.

Is the voltage bump neccessary for 8 gb sticks or so ? as 3x4 gb ran without any problems for ages with tighter timings and speeds than this!

ps. still so far so good with just 1 stick.

 

[snowdog]

Ok, now trying with a DIFFERENT 2nd stick of 8gb, vccio at 1.15, ram at 1.55v, and 1866 11-11-11-27 2T...

 

[snowdog]

After 2 days of use it seems fine so far.

Wonder what did the trick, the different 2nd stick or the extra vccio ?

The stick I considered faulty is used in a different pc now without problems, albeid at SPD speeds not XMP ( not my pc though so I don't care).