754 and cool n quiet, how big a difference.

~El~Jefe~ · Post by **~El~Jefe~** » Sat Jul 09, 2005 11:23 pm

I bought thte amd64 for its speed potential and its cool feature.

I am wondering how much heat difference happnens if you disable cool n' quiet. My mobo and chip thermometers arent working well, they go up and down at will without the temperature actually going up....

reason im saying this is that I have 1 gig of memory in my 754 3000+ computer right now, however, I have an identical 1 gig chip that will fit fine on my abit kv8 pro, however, cnq doesnt work with two chips on here, so I would have to disable it.......

how much of a heat difference would i have to account for in normal use? i know in performance mode its the same thing.

fjf · Post by **fjf** » Sun Jul 10, 2005 1:58 am

Temps go up (in my system) from about 35ºC to 55ºC. Not too bad; pentium 4 systems go all the time like that. If you want to go lower, get a better heatsink+fan. The temps I reported were with the stock fan and sink.

Regards

Hifriday · Post by **Hifriday** » Sun Jul 10, 2005 2:25 am

For my A64 3200+ (s754 Newcastle) the AC wattage difference at idle between 1.4v 1600mhz and 0.8v 800mhz is around 30w. I did that comparison to get an idea of the power savings for a Sempron 2800+ if it could run CnQ.

Your 3000+ 754 should run at 1.5v 2000mhz default, meaning an even larger wattage difference at idle without CnQ. I am not sure exactly how this translates in temperature, but assume 30% of these extra watts will be dissipated as heat in your PSU and the balance 70% will be dissipated on the CPU.

~El~Jefe~ · Post by **~El~Jefe~** » Sun Jul 10, 2005 11:00 am

Hm, thanx. I ll keep the memory out of the computer for now it seems.

ill hold it for a dual channel build, i already have a the abit 939 board with a kt800 via chipset (i dont like pci-express or nvidia chipsets)

thanx