ok corsair stable at 400x9 7-7-7-20 PL7 2T

going to kick it up to 450 8-8-8-24-pl7 2t with same voltages and see what happens.

What is the current NB voltage?

you may need to raise NB voltage a bit and there was a NB GTL in use as well as CPU GTL as I recall

I would probably work NB voltage if CPU GTL still fails and set GTL back to AUTO until I confirm a safe NB high end is not stabilizing the memory

If a high NB voltage such as 1.6 has no effect then I would try GTL

Thare ya go!


Now you're on the right track



just work them numbers.. we know the GTL is correct for the VTT so if it got stable on that then I would leave GTL and if you see any hiccups raise NB a touch with GTL set

I would only set GTL back to auto if memtest failed the same as before

If after all is said and done its more stable with the GTL then leave it and work NB but do keep in mind the GTL AUTO is an option with NB tapped up too.

there is nothing set in stone.. its a matter of working the variables and do remember a touch of Vcore may also help too..




..and one other thing.. dont stress about 1T @ 1800. Thats the last thing to go for and at 1800 and above its not as critical to hit. 2T is fine

OCCT and Memset stable after 1 hour.

Tried PL6 - lockup - didn't even try 1T

Do latency and read values seem low or am I thinking of PL6/1T?

Also - noticed on reboot that windows 'sound' is scratchy - seem to recall a post by you about possible cause - can't locate it.

ok OCCT stable 1 hour with both disabled

trying IT

ok - that's a little better!  

OCCT stable 1 hour

Static read disabled.

Any benefit to be gained by enabling it?

hmmmmm

Windows boot sound being scratchy and all other sounds OK would indicate the issue is some kind of switch taking place. As Windows boots its initializing ACPI systems and that could be an indication of a resource share not quite worked out at the time of sound init

That may resolve itself on another Windows install as Windows will make the assignments as it is being installed clean.

DRAM STATIC READ ENABLED is allowing higher functions of DDR3 memory which typically in a clock you really do not need but it does provide a bit of a boost if ENABLED.

You may find that to be unstable in FSX use when the NB is really getting hammered. Thats the first setting to DISABLE if you see any problems like that


Now..

ChaVref +25mv
ChBVref +25mv

Not sure that is needed. Reset those to AUTO and see if its still stable. IF so leave them on AUTO but do note them in case you see anything in 3D stress and can try them again lock down stability

Everything else is looking right on the money.

Once you establish everything then you need to go through that BIOS on all screens and write down all the settings



NOTE: When you do switch to the 64bit OS (or before you install it) you need to enter the ADVANCED CHIPSET area and find the setting MEMORY REMAP FEATURE. It needs to be ENABLED for a 64bit OS, DISABLED for 32bit OS