Coretemp wild readings vs Asus PC probe

[SaevusMalus]

Hey all, new day new problem.

I have a e6600 in a P5W DH Deluxe. I have speedfan, Asus PC Probe and Core Temp. I was running according to core temp 46C at idle, the PC Probe is 10C cooler, so when I played games for awhile and was running 52C on coretemp pc probe would still be exactly 10C lower. Well, today, my Coretemp started flucuating wildly, it would be at 46, then jump to 52 then down to 48, back to 46, then up to 85 with a ? then back down. Meanwhile Pc Probe stays constant at about 39, MB 42

So my question, anyone else have troubles with the core temp .94 Beta? I don't know whether my HSF got knocked loose when I moved the computer around today (9700, seems to still be secure), I personally think core temp is hosed, but I wanted to check with the experts and folks who use such things more than I.

On a side note, I plan on shipping my computer in a month overseas, so I will be resetting a new HSF, I have not gotten the temps I would like at all with the stock or this 9700, case is a Lian Li 65, 2 intake fans at front, 2 exhaust one at back, one on top. I need to work out some better airflow I think, because 46 at idle seems hot with this zalman, and I am pretty sure I seated it weel with artic silver 5.

Anyway, any thoughts out there?

 

[ts8lemonade]

Well, you did say it was Core Temp beta, so they may not have completely worked out all the kinks yet. Anyway, every time I've used Asus PC Probe it has been pretty much right on the mark. You said the you made sure the heatsink was still secured on. Mobo temps usually don't jump around so much, so I would just trust PC Probe if I was you.

On a related side-story, I was watching TV a couple weeks ago (after just having built my PC) when I heard a loud thump come from my computer. I kinda just forgot about it and was later using it when I opened up PC Probe and was scared to see 59C as my idle CPU temp when just a few hours ago it was reading 34C. So I checked in my case and sure enough my Arctic Freezer 64 had half fallen off lol. I cleaned it up, put some AS5 on it, and reattached it (better this time, most securely) and now after about a month burn-in I get 32C idle on my CPU 😀 Moral of the story, if you hear a loud bump noise from your computer, investigate it and don't just think it off as nothing.

 

[SaevusMalus]

Well., glad tp hear somone speak well of the PC Probe, I like the interface and the data it gives seemed to match a slew of other programs, I have given up on trusting Coretemp, it just hops around.

What has me bothered is that the new room I am in has not so good airflow, and my temps have jumped 4C....damned if I can figure out a way to get better airflow. I have a Lian Li case with 2 80mm intake fans, I turned them up to max, but it just seems the top and back exhaust fans are running too quiet and slow. Thinking about cutting my case up and adding more fan support, that 80mm in the back either needs to speed up or get bigger.

Well, thanks for the response. Back to pondering CPU water coolers and thinking about this airflow issue.

Cheers

 

[tomhole]

The Lian Li case is the problem. I have one with the 80mm intake fans and an 80mm exhaust fan on the rear and one on top. The big problem is the intake fans. The incoming air goes through my 4 HDD which are reading 38C. Guess what? That's an excellent heat exchanger that is heating up the incoming air. Best I can hope for after that is 38C anywhere in the case even though ambient is much lower.

So, I made some simple changes and the CPU temps dropped 8 deg across the board. MB temps are now at ambient.

Here's a pic:

To start, I just took the 5.25" drive bay cover off. That dropped the CPU temps about 4 deg. Then I added that fan (temporary) and added an addtional exhaust fan on the side. That gave me 8C. I am also going to swap the two 80mm stock intakes so they blow out, not in.

It seems so obvious to me now: Suck in cold air, blow out hot air. But Lian Li's design never sucks in cold air. It all gets pre-heated by the HDD. I guess I could move my HDD up to the 5.25" bay, but that would be a PITA. This was simple and works.

Tom

 

[SaevusMalus]

So you have nothing mounted in the 5.25" bay? I have two optical drives in there. I thought about popping out the bottom two 5.25" cover plates and mounting something like a 40mm or what ever I can fit, I haven't measured the space yet. That would give me more airflow in, plus, I noticed that when I take the filters off the front fans, it improves the temp by like 4C, there are those three layers of filter (case face plate, then filter braket, then filter) I might cut out the area around the filter bracket off the face plate, but then it will look a bit shoddy. Adding a fan to the clear window side is also an option, I need to get to the local computer store and see what fans they have, or maybe just measure up some mods and get on newegg. For fun I took the side panel off and it ran 10C cooler, so I think an intake fan on the side would really help. But yeah, I noticed the preheating effect which is compounded by the 8800 GTX which radiates heat down into the incoming airflow. Good case, just need to get a little creative to get exactly what I want.

Thanks for the idea on the fans.

 

[tomhole]

I just have one DVD writer so I have 3 empty 5.45" bays. I did some more re-arranging:

CHanged the top fan to suck in, 2 front fans blow out. The two intake fans are on high all the time (for now), the 4 exhaust fans and CPU fan are on Q Fan. I will try them all on high in a bit and see what happens.

Anyway, CPU temps dropped another degree, but even better, the case temp is now @ 25C which is 1C above ambient. The MB cooled off to 25C, the HDD's are now at 30C (vs 38) and the GPU is at 49 vs 54. I just have a 1650XT, so not a lot of heat there. With your card, this should help a lot.

This scheme I have is contrary to the old heat rises addage, but that's Lian Li's fault. I'm going to keep following the basic premise of suck in where there is cold stuff (i.e. nothing) and suck out where there is hot stuff (HDD, GPU and CPU). This basic premise has meant the difference between passing memtest and Prime95 and not passing. A cooler CPU is a stable CPU.

Tom

 

[grafton]

a they make 5.25 bay fans
b a fan on the side of your case is a good idea
c i have 2 diamondmax 10's with heat syncys and they dont heat up the incoming air that much