Quoting GHoosdum
I've got a few questions. First, although ECC Registered RAM is not required by Socket 939, can you still use it and gain its benefits in a Socket 939 board?
Short answer: No. In order to use ECC Registered memory the motherboard must support it.
Quoting GHoosdum
Second, all of your graphs show that the processors with Cool'n'Quiet enabled run cooler even at full load than with it disabled. Does this seem to be because the processor hasn't had enough time at full voltage to catch up in heat? I'm asking because when I upgrade to a Socket 939 system, it will be folding for me 24/7 and I'm wondering whether it's useful for me to turn Cool'n'Quiet on at that time - if load temps will really be lower even with full load full time conditions, then that really IS a feat.
It's best to think over the the duration. Remember that Cool'n'Quiet has a pretty instantaneous reaction time in gearing up/down. Now...in that Sandra CPU burn-in example there is a pause between repititions as the burn-in cycle shuts down....switches to the next task...and repeats. The processor will "gear down" during those "pauses" allowing it to run at a cooler temperature. The ambient room was consistent during those tests. I would supsect that, on average, overall CPU temps will be 1-3 degrees cooler but that depends on the type of test and if there are any "pauses"...allow for some variables before definitely assuming that Cool'n'Quiet will consistently show lower CPU temps on the whole.
Quoting GHoosdum
The most common Cool'n'Quiet glitch I've seen so far is the fact that my A64 notebook can't run at above 800 MHz on battery NO MATTER WHAT LOAD. But I'm not sure if the socket 754 notebooks use Cool'n'Quiet, or still use PowerNow...
"Cool'n'Quiet" is a function in BIOS. It will be an enable/disable setting labelled as Cool'n'Quiet. You would have to do the following to use Cool'n'Quiet.
1) Enable it in the BIOS
2) Download the software for Cool'n'Quiet
3) Set it in the OS properties in the same manner as you would for Powernow.
Cool'n'Quiet has to have a motherboard that supports it. I cannot confirm if this is as simple as a BIOS upgrade to enable this feature. Remember that notebooks and desktops are treated differently but it would seem that Cool'n'Quiet would be more efficient for notebook battery life since the processor would, on average, run at a lower voltage setting for most of the time thus extending battery life. When you would need full speed then it would kick up to that...such as during gaming.
But then you are fully aware that you are sucking your battery dry.
1000 MHz, if I'm right, is a new step in A64 socket 939 motherboards. If I remember correctly 800 MHz was the previous HT link maximum and this would be especially true of Socket 754.
Now where's Thrax to confirm this for me?