Advanced AM2+ AMD Chipset Configuration Options and What They Mean.

[EniGmA1987]

"Processor On-Die Term" has something to do with the impedance value of something in the CPU. Depending on the area you found the option, it could be the impedance value for where the HTT or memory end at the CPU. Changing that value around could reject more signal relfection introduced by overclocking and thus give higher OC. But changing it at the wrong time could cause the system to not post since it would reject too much of the actual signal and wouldnt get data.

The only place I have seen something similar before was the memory on-die termination on my old DFI CFX3200. That allowed me to change the resistance of the termination for the memory. I never found a use for it because no matter what I changed it to and at what frequency my RAM was at, it always caused the system to not post.

Other similar options on the CFX3200 allowed me to change the resistance and drive strength of the HTT send and receive, and also impedance of the data to northbridge. Be very careful when changing impedance values around since if you use the wrong value for long enough it will cause serious failures. I was able to achieve record clock speed on the HTT back in the day (most hit a wall around 1250MHz back then), the max I got was 1650MHz (3300HT) on the HTT, but because of running the resistance so much higher the motherboard died after a few months of that setting. And it was kinda pointless too since HTT higher than 1GHz did nothing. But it was kinda fun knowing that no one else had achieved clock speeds anywhere close to me

[doompc]

Enigma, the CFX3200 was one of the very few boards capable of running 4 DDR400 DIMMs at 1T due to the insane amount of settings. DRAM Skew Rate, Driving Strength and adjust over the On-Die Termination were some of those who made this possible.

[EniGmA1987]

Well I know that, and I personally ran my 4 (512MB) sticks of crucial ballistics memory at DDR450 1T, I was just saying that the on-die termination setting never did anything for me and always caused my system to not post. The other settings did wonders

[Mechromancer]

EniGmA1987, thank you very much for your detailed information on the subject. Since I can't afford any spares atm, I won't mess with these settings too much just now as per your recommendation. Drive strength interests me a lot so I'll have to toy with it. I got my old s939 memory stable on my DFI motherboard at pretty high clocks, ~DDR575 with some Mushkin DDR500 using drive strength tunes. It was so long ago I've forgotten what I did. I have to relearn all that stuff from my past. I've been away from OCing too long. Time to come home.