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SETI MB CUDA for Linux
sunu:
Don't bother with windows but if you're going to do it anyway or for future reference:
CPU-Z from http://www.cpuid.com/cpuz.php Among other things it will show the vcore.
Core Temp http://www.alcpu.com/CoreTemp/ Most importantly it shows the VID of the processor.
Prime95 http://www.mersenne.org/freesoft/ For stability testing and to load the processor 100%.
As for the cooler, it's decent. Personally I don't like my fans autothrottled and don't connect them on the motherboard. I connect them directly to the PSU cables for 100% speed always.
riofl:
ok ill prep a cd with those things on it.. ill probably do it anyway just to see how this prime prg loads the cpu and now i am also curious what the windows utilities say in addition to my bios.
sunu:
Ok. Be sure to check how the vcore changes between 0% and 100% cpu utilization. And we'll see if lm_sensors reports the correct VID.
In prime95 you'll need to start 4 threads for your quad core. It has three tests: small FFTs, large FFTs and a mixed mode. Choose small FFTs.
What voltage did you use when you're running at 3.6 GHz?
riofl:
--- Quote from: sunu on 20 Jan 2010, 11:31:29 pm ---Don't bother with windows but if you're going to do it anyway or for future reference:
CPU-Z from http://www.cpuid.com/cpuz.php Among other things it will show the vcore.
Core Temp http://www.alcpu.com/CoreTemp/ Most importantly it shows the VID of the processor.
Prime95 http://www.mersenne.org/freesoft/ For stability testing and to load the processor 100%.
As for the cooler, it's decent. Personally I don't like my fans autothrottled and don't connect them on the motherboard. I connect them directly to the PSU cables for 100% speed always.
--- End quote ---
i have found that high airflow is not always better. the air can move so fast it reduces the ability of the heatsink/air interface to transfer maximum heat to the air.. for instance if i run my rear fans at 100% the components, especially those under the heatpipe on the mobo actually run hotter. i have found that 80% is a nice starting value that usually is very close. the exceptions are gpu fan/coolers the stock coolers are efficient even at 100% fan which tells me they did not put high enough rpm fans into the cooler.
riofl:
--- Quote from: sunu on 20 Jan 2010, 11:49:18 pm ---Ok. Be sure to check how the vcore changes between 0% and 100% cpu utilization. And we'll see if lm_sensors reports the correct VID.
In prime95 you'll need to start 4 threads for your quad core. It has three tests: small FFTs, large FFTs and a mixed mode. Choose small FFTs.
What voltage did you use when you're running at 3.6 GHz?
--- End quote ---
ok.
if i remember correctly (it has been almost 2 yrs since i did this) i believe i upped the VID to 1.3 v or so. i had found that slight voltage changes had a big difference in stability and nothing gained after a certain voltage. i tried 1.35v and only got more heat as a reward. i think i ran it at 1.28 and it was fine for almost an entire day then went south but at 1.3 it was good., i know of one person running the cpu at 4.0ghz with water cooling and i think he is running his VID around 1.4v i dont remember exactly but i believe it was 1.38v. i do know he is pushing the limit and it is not 100% stable but it is good enough for him. he said he thinks he needs 1.43 or 1.45 but he has reached the safe limit of his cooling system. it is one of the cheaper ones. still that is quite a jump. i am not much of a believer in overclocking as it does not fit with my philosophy of 'if it aint broke dont fix it' and the mfgrs set their specs for a reason.
but since i always really wanted a 3.0 ghz machine but at the time could not afford the processor, and this can safely go to that speed i decided to go against my beliefs so that i had the best of both worlds for myself. :)
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