ga870a UD3 + F3-10666CL9Q-16GBRL

[SimonM.]

Hi,

My new system is not very stable, lots of bluescreens and crashes.

It runs OK with only 3 modules installed, if I install 4 Memtest86+ gives me Errors...

Mainboard Gigabyte GA 870a UD3
RAM 4x4096MB G.Skill Ripjaws Series DDR3-1333 CL9 Kit
CPU PhenomII 1090T

I have everything set to auto so
could you tell me the right BIOS settings?




Thank you
SimonM.

[Tradesman]

Check CR (Command Rate), many AMD mobos default to 1N, try 2N. Otherwise manually set CR to 2N, enter your speed, base timings and DRAM voltage and should be okay - possibly have to raise NB .05 to .1

[SimonM.]

CR is already at 2.
The NB Voltage or the NB-CPU VID ?
Increased both by 0.1V but there are still errors.

[Tradesman]

Have you run Memtest on each stick individually to make sure you don't have a bad stick

[SimonM.]

I tested all Slots and all sticks.
Im able to run all combinations of 3 sticks but not 4

[Tradesman]

May be the mobo, can try and contact them or maybe GSkill knows of something - they should be in later today

[SimonM.]

strange...I changed the following settings:

CPU-NB +0.15V
DRAM +0.06V
timings from 9-9-9 to 8-8-8

and memtest86+ has no more errors ....
But the system still crashes with 4 sticks

with 3 everything is ok

[Tradesman]

Could try a little more juice to the CPU and MC

[GSKILL TECH]

Do you have the latest BIOS?

Might be a problem with the motherboard if any 3 modules work fine.

Thank you
GSKILL TECH

[SimonM.]

yes i updated the BIOS with the gigabyte Tool...

i also testet different combinations of slots and every slot of the mainboard is working fine.

[Tradesman]

might want to raise your tRFC to next highest amount and could you post your BIOS settings

[SimonM.]

with this settings memtest has no errors but machine still crashes:


http://img834.imageshack.us/i/sdc12811a.jpg/

http://img440.imageshack.us/i/sdc12815.jpg/

[GSKILL TECH]

Looks just fine, although typically it should not need the CPU NB VID boost and the DRAM Voltage boost. One or the other.

Thank you
GSKILL TECH

[SimonM.]

had no crashes today or yesterday...I hope it is stable now.

Thank you for the Help!