When I give mine more NB-Volts it gos unstable. (I think I gave it more NB-VOlts but that I might also have needed to give it a little bit more HTR-Core voltage.)
About the Dq6 versus DS5 I think you are correct physically... they are the same. So it all comes down to BIOS.
What do CPU-VID, NV-VID, NB-CORE and HTT-CORE, HTR-CORE voltages default to on the DQ6 with the latest BIOS?
On the DS5 with BIOS F4 these values are are 1.3V,1.3V and (???),(???),(???)
versus the F5 Bios with 1.2375V, 1.1375V, 1.255, 1.165V, and 1.162 Volts.
I think that the NB-VID, NB-CORE, HTT-Core, HTT-Core, and the HTR-Core Voltages may be very important.
I'll bet with a non-9850 Phenom and the F5 bios... that the voltages are either okay OR they are higher values and that with the 9850 these values drop below what they should be. (I'm just guessing. But it's the only real differences I can see between the F4 and F5 bios. I'll test higher NB-VID along with a bump to HTR-Core later.)
(EDIT#2: Added the NB-Core Voltages and now also the HTT-Core. So we have 4 values for voltages that might affect the NB/HT. BIOS F4 had 1.3Volts on the first one... but I didn't record the values for the other three. The BIOS appears to allow you to change all 4 values: it calls them: Memory Controller Voltage, Chipset Voltage, HTT and HTR.)
Why HTT and HTR? (Transmit and receive I think. But why are there separate values on this MB when it is only one value on other MB?)
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