Dtek whitewater temperature problems.

[nikhsub1]

Originally posted by pHaestus
nikhsub:

Pin from CPU is worst possible method? What is a diode? How would one access something like a diode on a CPU?

Hint: Check the tech specs for the processors, and you'll see the diode's positive and negative leads running out through 2 of the CPUs pins.

Do check speedfan bacause it will show you if two readings are on the same channel of the Winbond IC. That is a pretty good indicator of a diode reading (check the appropriate winbond spec sheet and you'll see that diode and thermistor share same channel on their designs...

Yes the way epox implemented it it is. Like I said, not a diode reading and not an insocket thermisor, rather one pin on the cpu to guess the temp of the core. This came straight from an epox employee at the time of the 8RDA/+ release. And pakman is right about the diode being on board, but there is absolutely no way to monitor it in any way, it is only used for shutdown should the CPU overheat. I have an 8RDA running an AX-7 and the temps is 50C ALWAYS, hehe, not matter the ambient. It could be 18C in the room or 35C in the room and always the same.

[pakman]

Originally posted by nikhsub1
Yes the way epox implemented it it is. Like I said, not a diode reading and not an insocket thermisor, rather one pin on the cpu to guess the temp of the core. This came straight from an epox employee at the time of the 8RDA/+ release. And pakman is right about the diode being on board, but there is absolutely no way to monitor it in any way, it is only used for shutdown should the CPU overheat. I have an 8RDA running an AX-7 and the temps is 50C ALWAYS, hehe, not matter the ambient. It could be 18C in the room or 35C in the room and always the same.

actually epox has stated that 8rda+ uses the CPU in diode reading for their overheat shutdown feature. however due to the design of that chip (1 input/ 1 output), they can only use it for the shutdown feature and cannot use it to display temps. For reporting temps as seen by epox utility and MBM, the IN SOCKET temp is used. That is from the diode (excuse me if I am not using the right term here) at the center of the socket. I really don't understand what you mean by "one pin on the cpu". Since that diode/chip isn't contacting the CPU back directly, it is influence by any airflow that get through the socket. In the 8rda3+, they change the design to the traditional thermistor so that it touches the cpu back.

to tpeguin et al, sorry for getting off topic...

[nikhsub1]

Originally posted by pakman
actually epox has stated that 8rda+ uses the CPU in diode reading for their overheat shutdown feature....I really don't understand what you mean by "one pin on the cpu". Since that diode/chip isn't contacting the CPU back directly, it is influence by any airflow that get through the socket. In the 8rda3+, they change the design to the traditional thermistor so that it touches the cpu back.

to tpeguin et al, sorry for getting off topic...

I said that about the diode for shutdown in the 8rda... What I mean by 'one pin' is that the AMD CPU's now have 462 pins (i think) and one of them is used to calculate temps of the cpu, not an insocket thermistor sitting under the cpu. Check THIS old thread.

[pakman]

Originally posted by nikhsub1
I said that about the diode for shutdown in the 8rda... What I mean by 'one pin' is that the AMD CPU's now have 462 pins (i think) and one of them is used to calculate temps of the cpu, not an insocket thermistor sitting under the cpu. Check THIS old thread.

ah ha... interesting. so the thermistor is in the actual socket piece(the white part that cpu pins fit) and not the usual spot in the center open space. But that guy is saying there is a thermistor built into the socket piece that is measuring the temp from the cpu pin! egads! that's worse than taking the temp from below the die! think how far the pins are from the center die. I don't think they are saying they are getting a reading from the cpu itself through that pin.

edit: this explains why the cpu temp reading fluctuate so much with any air blowing around the socket...

edit2: Now I wonder why did they go back to putting a thermistor in the middle of the socket and extending out on the 8rda3+? maybe cause they found the temp measurements from the pins were inaccurate??? hmm...

again, sorry for the thread jacking... I'll put myself in the penalty box afterwards...:shrug:

[Ruiner]

My WW cooled rig (see sig) runs 57C loaded by cpuburn.


more details here: http://forums.procooling.com/vbb/sho...&threadid=7420

I can't say I trust this diode, but I did make sure to bend it upwards to touch the back of the cpu, and to coat it with thermal paste. If I could find a thin enough diode to put on my electronic thermometer, I would put it under the block next to the core.

[pHaestus]

that is retarded and I am not sure that I believe it (a thermistor touching a pin in the socket). It would require a custom made socket yes? Doesn't seem likely...

[pakman]

phaestus, I think your right... On doing another inspection of the 8rda+ socket area, I am pretty sure that the little chip in the center of the socket is a thermistor.

edit: and I prefer to be called mentally challenged than retarded... its more PC...