F3-10600CL8D-4GBHK BSODs when adding 2 additional sticks

[terintamel]

I have a Gigabyte GA-790XTA-UD4 AM3 MB running latest BIOS with a AMD Phenom II X4 955BE running Windows 7. For the last 3 years I have been running it with 2x2GB sticks of f3-10600cl8d-4gbhk with BIOS memory settings at auto with no memory related issues. I just purchased another kit (2x2GB) of the same model memory and now I have gotten BSOD and fail on Test 7 (Block Move) of Memtest 86.



I tried modifying my settings in the BIOS but cannot come up with a configuration that allows me to pass Memtest when running the memory at 1333mhz. I can get it stable when downclocking the memory to 1066mhz. Is there a way to get it stable at 1333mhz or should I just leave it at 1066? What type of performance hit am I going to take running it lower?


I have attached the memory settings page from my BIOS showing my settings that work at 1066 but not 1333.http://imageshack.us/photo/my-images...mag0124ec.jpg/

[RQuallsJR]

Things to try.

Try booting with the new set only.
Change the comand Timimg to 2t for now.
Change the Tfrco to 160 when running all 4 sticks.

[terintamel]

The picture is a mistake. I have been running with at 2T command timing.

Went ahead and changed Tfrco to 160 and ran Memtest. Still errors on test 7. I then removed the old sticks and put the new pair in the primary memory bank. Set my BIOS to auto for the memory speed and timings. The Memtest passed.

I then put the old sticks back in the secondary memory bank so I was back to 4 sticks. I left the BIOS settings all at AUTO and somehow do not have any errors on 4 runs through Memtest. Any explanation for why swapping memory slots made a difference. I was unable to run with the BIOS on Auto with no errors when the olds sticks were in the primary slot and the new were in the secondary slots.

[Tradesman]

Might clear CMOS before trying the above, also check that you have the latest BIOS

[RQuallsJR]

More things to try.

set dram timimgs to manual and put in the first 4 numbers thst are printed on your memory sticks, the rest at auto. let run for a few days, if no problem set your command timimg back to 1T. see how that runs, Should be good, need any more help let me know ok .......Rob

[terintamel]

Not sure why but everything is fine since I swapped slots for my sticks. With the new ones in the slots formerly occupied by my old sticks and vice a versa, I have passed all memtests and no more BSODs. This is with all settings at AUTO in my BIOS for the memory.

[Tradesman]

Sounds good, the newer ones might have had a slight tweak to the SPD that helped, (or they just wanted to be dominant )