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View Full Version : Is a 24 degree delta on a Mach 2 a bit funky?



Spanky Deluxe
05-22-2005, 07:03 PM
I recently switched to a 64 and immediately hooked up my prommy to it. Now I'm picking up a CPU temperature of -22 to -24 degrees unloaded via motherboard monitor on my NF4. The display on my Mach 2 reads 48 degrees though, so that's a delta of 24 degrees!! Is that bad??

My old XP-M would normally sit in the mid to late negative twenties when oc'd to 2800 Mhz. I can't remember what voltage that was though. It didn't normally rise up much, maybe to late negative tens. This chip however can get as high as -4. I did put a lot of thermal goo (ceramique instead of the as5 I used to use on my XP-M) because I didn't really know how to deal with the heatspreader and coverage. I tightened up the screws as tight as they'll go and the processors now chilling at 2-4 degrees less than it was after my first mounting.

What I find odd though is that with my XP-M chip, the front of my prommy *never* read below 40 degrees. It'd normally han around the -36 degree mark, in fact I'd wondered if it'd been losing a bit of its power over the last few months but now it goes and surprises me!!

Any ideas?


Phil

Cr@sh_D1n3r
05-22-2005, 09:19 PM
I had a similar problem on my custom rig, I solved the problem by removing the heat spreader on the cpu. Of course doing so void warranty but I did it on 2 cpus and it work better with the hs off it. If you've put a lot of thermal paste make sure it's tight between cpu and evap so you don't have an ½ mm of thermal paste gap. BTW you did a good choice on your artic silver ceramique over as5 as ceramique as I found out it was better in really low temps.

CrimeDog
05-22-2005, 09:57 PM
i have no IHS on the mobile and good contact, see similar difference. the cpu temp is lower than evap temp, and prommie reads low so real temp is probably in between the two :p

bachus_anonym
05-22-2005, 10:06 PM
It appears to be "normal" on DFI NF4;)

Please take a look at this post (http://www.xtremesystems.org/forums/showpost.php?p=853624&postcount=85), where I measure IDLE and LOAD temps using several temp probes (one showing evap temp, another showing temp on the bottom of the block and then third probe attached to IHS) against MBM readings.

This and following post (http://www.xtremesystems.org/forums/showpost.php?p=855060&postcount=101) will show you differences between what BIOS shows and MBM reporting.