Gfx slow and then BSOD.

Isn't the default voltage for that ram 1.6?

Yes, test it in 'unganged' mode first with both RAM cards installed.

The CPUZ shows default DRAM voltage of 1.50v.

Check it it BIOS, if it doesn't show you a voltage number, then change it to 'Manual' and if needed increase it by the smallest amount possible.
If the above doesn't work then change it to 1.55v.

Your temps in Speed Fan, assuming the system was at idle, looks fine.

Get Core Temp and check it under full load with Prime95, use the tourture test.

CPU - Stress Test with Prime95

Prime95, tourture test, is also a good way to test the RAM.

What about the north bridge? it's what always cooks on my systems.

No idea how to even check Northbridge temps (although you can take a look at the speedfan screenshots a couple posts ago if you haven't already).

Also, the RAM voltage indeed defaults to 1.5v (manufacturer's site).

aggixx said:

Yeah, I have so many fans on this build it's almost unnecessary, I doubt it would overheat. The few times that I have monitored temps (during a prime95 torture test, mainly) my CPU was holding in the mid 40s celsius with a 10% processor overclock.

Although that was with the 212+ whereas I'm now using the stock fan (reverted the OC for this fan).

I will retest in unganged tomorrow morning, if it BSOD's I'll up the VDDNB voltage to 1.24v and then if that doesn't work, the DRAM to 1.55v.

AMD CPUs usually run cool, even with stock coolers.
It's worth checking again just to be sure.
A loose CPU cooler or paste issues can cause high temps.

The unganged setting and the VDDNB voltage bump should solve the RAM issues.
This is likely the cause of the crashes but, only testing will tell.

Maguscreed said:

What about the north bridge? it's what always cooks on my systems.

Definitely on 775 socket mobos. If your OC'ing a NB fan is a good idea.

On Intel i-series and the later AMD CPUs the memory controller is integrated in the CPU. AMD NB is for the PCIe. They 'usually' run cool.

aggixx said:

No idea how to even check Northbridge temps (although you can take a look at the speedfan screenshots a couple posts ago if you haven't already).

Also, the RAM voltage indeed defaults to 1.5v (manufacturer's site).

For a quick check on the NB temps, after its been running hard for a while, open the case and see if you can hold your finger on the NB heat sink.
This will let you know if you need to check it further.

Check the RAM voltage in BIOS when you get a chance, better to be sure.

Let us know the results.

I have just retested the VDDNB voltage bump with no success, increased it to 1.2375 (increments of 0.0125) still BSOD'd.

Haven't been able to try the DRAM voltage change because after chain blue screening the system becomes difficult to boot consistently.

On my most recent attempt I smelled something melting so I immediately powered it down and unplugged it. Was unable to locate the source of the smell for sure, but my best guess is CPU? Last time this happened it was my PSU dying which then surged the motherboard shortly afterward, so I'm hesitant to continue.

Edit: When trying to boot, the computer does 1 long beep followed by 2 short beeps, Conventional/Extended Memory Failure? AMI BIOS, but it doesn't list a meaning for 1 long 2 short. Have tried reseating the RAM twice, once just a reseat, second moving it to different slots, still same problem. Running just one stick of ram (unsurprisingly) gives the same result.

Tried resetting the BIOS settings by taking out the motherboard battery, still nothing.

Edit: Checked manual for beep codes: "One continuous beep followed by two short beeps then a pause (repeated)" means "No memory detected".