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Temps creeping up on my SLK-800

Texun

Texun

Platinum Member
Curious....

I've read where ASIII needs a few days to cook in and then it is supposed to get better. No problem.

I blew out what little dust there was and installed the SLK-800 on a stock XP1700 with an ASUS A7V266 board and the temps ranged from mid 30's to low 40's. A week later, and without making any changes, the temps have crept up by almost 10C. Now my idle is 45C (Sys 26C) and loaded it has hit 49C which is still WAY below any red flag level, but why?

Sure I could get it lower by blowing more air through it but I went for a mega HS and low RPM fans for peace and quiet. I have an 80mm generic on the cpu and two more 80mm Smart Fans for intake and exhaust. I realize temps could be lower with better fans - but I had lower temps during the first 2 days of the install. And this was with MOHAA turned to 11 for a couple of hours.

What I have
XP1700
A7V266C
512DDR
Antec 430 Truepower PS
Using MBM as my monitor.
One HD
Two CDR's
Sound and PCI card.
Total of 3-80mm fans. -The PS and case\exhaust fans are no more than 2" from the cpu so it should suck the hot air out pretty well.
Anyone else ever see this after installing a HS?

 
That happened to me with my SLK-800. First weeks, during the end of summer, I got temperatures of around 38-44C. Now, during the winter, I get temps from 49-55C. It's a bit depressing considering how much money was spent on the heatsink. My system isn't even as quiet as I would've liked. I only have the 80mm Turbo Cool fan that came with my Chieftec DX-01BD on the SLK-800 and the two PSU fans in my Turbolink 420w and the northbridge fan. These temperatures are measured on an Abit KR7A-Raid mobo and I also used Arctic Silver III.
 
I can drop them back to the 30's by removing the side of the case. That's an air flow problem, but it was once that good with the case closed... strange. However I do agree that for what I spent I was expecting better. Just trying to figure out what happend to my air flow now.

Have a Happy New Year.


 
I've seen lint and crap build up in front of my intake fan and restrict airflow pretty fast, maybe that is part of your airflow problem. If you want a fan that has good airflow and static air pressure without making a whole bunch of noise, then get you the 45 cfm Delta 80(FFB0812HHE) from sidewindercomputers. I got 1 of these about a month ago and it is quiet and still provides good airflow and static air pressure for your hsf. I'm also using one of those 3 speed switches that they sell made by Thermaltake on a 68 cfm Delta(FFB0812SHE) and it also does a remarkable job of quieting that noisy Delta down when I don't need a full power fan blowing on my SLK800 it is mounted on.
 
texun, are all the fans (case & cpu) spinning ok? Maybe time to take them out and give em a dusting. Check there isnt a load of dust in the heatsink while youre at it. If youre case has a screen to catch dust etc, obviously give that a clean too. Those TT Smart Fans move a LOT of air - and hence a lot of dust too.

Ive a small wonder if someone's slipped some really low quality goop into a AS syringe (or held it nose up for like a year or something) and the stuff has dried out... Seems v unlikely though.
 
Originally posted by: Davegod
texun, are all the fans (case & cpu) spinning ok? Maybe time to take them out and give em a dusting. Check there isnt a load of dust in the heatsink while youre at it. If you're case has a screen to catch dust etc, obviously give that a clean too. Those TT Smart Fans move a LOT of air - and hence a lot of dust too.

Ive a small wonder if someone's slipped some really low quality goop into a AS syringe (or held it nose up for like a year or something) and the stuff has dried out... Seems v unlikely though.
Click to expand...


You know something..... I had that same thought about the ASIII. This is not the first time I have had temps creep up only days after a build. However, when I remove the HS the ASIII still looks pretty much the same. I really don't know what it is. The HS fins are clean, as is the rest of the case and fans.

I know that I can lower the temps by moving more air out of the case but that still doesn't give me the answer as to why it was fine two weeks ago when I installed the HS and ASIII fresh. I doubled checked the HS to make sure it was seated correctly on the cpu when I installed it. Haven't done that since- and mostly because it fits really snug and I would also have to remove the board to get a bird's eye view. I also used the sticky pads as per the instructions. It's running cool now - idle is at 40C but the case is open. When I button it up the temps will climb to the high 40's. It hit 50 once since I added the SLK-800. This really isn't as much of a problem as it is a curiosity.

Thanks for the help. I am interested to know if anyone else has ever had temps creep up after a week or two of use?



 
I think your lower temperature might come from living farther north. The motherboard you have also matters. I think Abit boards report higher temperatures than Asus boards, but I'm not sure about other boards.
 
I take it after you checked the goop on the cpu you cleaned it off and replaced it with fresh stuff? And still temps didnt go back to what they were originally? Def seems to be something to do with airflow within the case, either intake or exhaust, possibly cpu fan. Unscrew the fans and have a good look, dust usually gets stuck to the underside of the blades which you cant see too easily, also can be hard to see just how clogged the case's "grills" are... but tbh if your sys temp is around 20C cooler than cpu, case temp doesnt look likely to be the problem, unless the system sensor is positioned somewhere really silly - I take it you'd have said if the sys temp had gone up a similar % to the cpu temp anyway.

rpm of cpu fan? Unless shipping is a bit nasty try chucking on a panaflo instead of the generic. Um, btw you havent stuck the cpu fan onto the truepower's "fan" power connectors (if i remember right the wire for it is blue and the connectors have "fan only" on them)? What sort of thickness layer of AS3?
 
I have the same excact problem with my SLK-800 , after fresh install temps are 30c-32c idle and 35c 38c full load two weeks later I am at 40c idle and 46 full load. I even re did install after 2 weeks and same thing happens so its not case airflow. the heatsink fins were pretty full of dust though in very short time. I am very disappointed in this heatsink works great at first but temps go up allmost full 10C in a matter of weeks.
 
Originally posted by: Mustanggt
I have the same exact problem with my SLK-800 , after fresh install temps are 30c-32c idle and 35c 38c full load two weeks later I am at 40c idle and 46 full load. I even re did install after 2 weeks and same thing happens so its not case airflow. the heatsink fins were pretty full of dust though in very short time. I am very disappointed in this heatsink works great at first but temps go up almost full 10C in a matter of weeks.
Click to expand...

Ah- YESS! I knew I wasn't going nuts. The next step for me was to start questioning my sanity. It looks clean, but then I haven't pulled it out under the light - and those fins are pretty close. I'll get a can of air and blow it out. My PC has never had more than a small amount of dust that was visible to the eye. The board looks like it would pass the white glove test but I'll check again. Physics are at work here and I just need to find out where. If this is a dust in the HS issue, then I will need to redesign my air delivery and add a filter, but adding a filter to fans that are already turned down certainly won't help the flow.

To answer a couple more questions:
ASII - Yes, each time I pull the HS I clean everything with Alcohol and re-apply a very thin layer evenly across the cpu - not the whole chip. Temps did not change.

jarsoffart: think your lower temperature might come from living farther north.
Click to expand...
Not sure I understand this one. I live in the southern US which is where the board was when I got the low 30's temps. Regarding the MB - Yep. It's an ASUS which I believe is known for reporting\running hotter than other boards, and reads the temp from the chip on XP's. If this is wrong please let me know. I have read bits and pieces on this but have found nothing definitive as to the variance of ASUS boards.

Thanks everyone!
Anyone else?
 
Originally posted by: texun
Originally posted by: Mustanggt
I have the same exact problem with my SLK-800 , after fresh install temps are 30c-32c idle and 35c 38c full load two weeks later I am at 40c idle and 46 full load. I even re did install after 2 weeks and same thing happens so its not case airflow. the heatsink fins were pretty full of dust though in very short time. I am very disappointed in this heatsink works great at first but temps go up almost full 10C in a matter of weeks.
Click to expand...

Ah- YESS! I knew I wasn't going nuts. The next step for me was to start questioning my sanity. It looks clean, but then I haven't pulled it out under the light - and those fins are pretty close. I'll get a can of air and blow it out. My PC has never had more than a small amount of dust that was visible to the eye. The board looks like it would pass the white glove test but I'll check again. Physics are at work here and I just need to find out where. If this is a dust in the HS issue, then I will need to redesign my air delivery and add a filter, but adding a filter to fans that are already turned down certainly won't help the flow.

To answer a couple more questions:
ASII - Yes, each time I pull the HS I clean everything with Alcohol and re-apply a very thin layer evenly across the cpu - not the whole chip. Temps did not change.

jarsoffart: think your lower temperature might come from living farther north.
Click to expand...
Not sure I understand this one. I live in the southern US which is where the board was when I got the low 30's temps. Regarding the MB - Yep. It's an ASUS which I believe is known for reporting\running hotter than other boards, and reads the temp from the chip on XP's. If this is wrong please let me know. I have read bits and pieces on this but have found nothing definitive as to the variance of ASUS boards.

Thanks everyone!
Anyone else?
Click to expand...

I was referring to Awakened2002 who lives in Minnesota and how he gets better temperatures with his SK-7, which is supposed to be an inferior heatsink.

 
I've benn running an SLK-800 on my OCed Tualeron rig for about 7 weeks now and the CPU temps have stayed exactly the same since they stabalized after a few days of ASII "curing".

These are pretty heavy heatsinks. I've seen a few people question the quality of the spring clip that holds the fan to the socket. Try an experiment: Lay the computer over on it's side so that gravity isn't (potentially) pulling the HS away from good contact with the CPU die. See if your temps go down. Also try pushing down a little on the HS (careful of the rotating fan blades!) to help it make better contact with the CPU die. Does any of this help?
 
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