XMS3

[Mario]

Hey all,
i had 8gb XMS3 (http://www.overclockers.co.uk/showproduct.php?prodid=MY-290-CS&groupid=701&catid=8&subcat=1517) for about 8 months,everything was perfect.
Few weeks ago i got another 8gb of XMS3 from another place (it was are gift coupon,nearly expired so i must pick something) extacly same as i got from OcUK
After i installed,problems started - constant BSOD's,random crashes etc etc..
Reinstalled Win 7 x64,corrected pagefile size - still problems...
Then i spotted difference between the ram from OcUK and ram from other place in CPUZ:
OcUK memory http://tinypic.com/r/6zrk3o/7

NON OcUK memory http://tinypic.com/r/vimfco/7

There seems different mhz between them,and what means pc3-8500F?Its 1066 mhz,not 1600mhz?
Didnt checked with memtes yet,but im sure all problems because of different ram
Any thoughts?
Thanks

 

[Surveyor]

Both sets of RAM are rated to run at 1600MHz but have different SPD information so they probably use different RAM chips.

I would say the best way to try and get everything working is to set things manually in the BIOS.

Option 1: Set the BIOS to use the XMP profiles. These are the same for both sets of RAM and will set them to 1600MHZ, 9-9-9-24, Command Rate 2T @ 1.65V. You will then want to see if you can lower the voltage towards 1.5V as that's safer for Sandy Bridge.

Option 2: Just set everything entirely manually in the BIOS. Speed 1600MHz, Timings 9-9-9-24, Command Rate 2T and voltage as low as you can get it towards 1.5V with everything running stably.

The "Memory" tab in CPU-Z will tell you what the RAM is actually running at.

 

[Mario]

Thanks Surveyor,will try,already did some things,but ended using only 8gb,as i need pc running..
Will try your advice this evening or 2morow