Mac Pro 2008 8 Core CPU temperatures extremely cool?

[iBug2]

Awesome. I've was wondering how you were doing it. I think I'll give this one a try this week. I try and avoid cold starting my machine anyway because I'm using the netkas trick for the GTX 285.

I'm curious though, does it overclock the memory as well or just the cpu's?

I ask this because even though the CPU's stay reasonable cool in my 08, the ram gets toasty hot. Even with getting ram with the proper heat spreaders.

It speeds up the bus and the RAM and like you said, the memory gets hot. But not as hot as it'll crash your machine. It depends on the RAM how much you can OC your machine anyway. You just OC it as long as your RAM doesn't give up and you leave it there. For example I have my 2.8 at 3178 Hz, if I go to 3195+ the machine doesn't boot, due to RAM. Some people can OC it to 3240, they just got luckier with the RAM they have.

 

[Tobuscus]

aw

Your Mac Pro runs cool? I'm jealous!

My '07 Mac Pro CPUs run at 80-100 degrees always, even if only firefox is open. Since it runs so hot, the fans are constantly going at around 3000 RPMs. It's the loudest computer I've ever had, which sucks... because... I only really needed it for audio recording

balls

 

[Spacedust]

I'd like to try this on my 2008 machine with the same specs as the OP, except that I'm using a flashed 4870.

I used to keep an old install of Leopard on one of my partitions but got rid of it when I put the new card in and realised it wasn't supported automatically.

Does anyone know how I can install Leopard with my 4870 in the machine?

HD4870 is supported natively by any version of Leopard.

 

[zepponick]

Hi, today I open my Mac Pro 2008, replace dvd, I removed the fans and the cpu cover, I dis some cleaning, It´s not the first time, but when I start it the fans are very noisy, I think they are at full speed, I downloaded iStat I see CPU B 126. Is that normal?
Anyone knows whats going on?

 

[h9826790]

Hi, today I open my Mac Pro 2008, replace dvd, I removed the fans and the cpu cover, I dis some cleaning, It´s not the first time, but when I start it the fans are very noisy, I think they are at full speed, I downloaded iStat I see CPU B 126. Is that normal?
Anyone knows whats going on?

Obviously not normal.

I am not familiar with the 3,1. However, there are 2 CPU B temperature. From the CPU A temperatures, I guess the higher one is the CPU diode, and the lower one is the CPU heatsink.

If my assumption is correct, then there is something wrong on your CPU B heatsink temperature sensor. Most likely you accidentally disconnect the wire (hopefully not broken) when you do the cleaning.

Since your 3,1 cannot acquire the CPU B heatsink temperature now. The fan will then automatically go to full speed to protect the CPU.

It looks like you have to open it up again, and check carefully if anything is disconnected.

 

[zepponick]

Obviously not normal.

I am not familiar with the 3,1. However, there are 2 CPU B temperature. From the CPU A temperatures, I guess the higher one is the CPU diode, and the lower one is the CPU heatsink.

If my assumption is correct, then there is something wrong on your CPU B heatsink temperature sensor. Most likely you accidentally disconnect the wire (hopefully not broken) when you do the cleaning.

Since your 3,1 cannot acquire the CPU B heatsink temperature now. The fan will then automatically go to full speed to protect the CPU.

It looks like you have to open it up again, and check carefully if anything is disconnected.

Well, I did it, open it again and looking for anything disconnected, look everything fine.
[doublepost=1480714891][/doublepost]Also watched a video on youtube.

 

[zepponick]

Hi, I called a friend of mine (Apple certified) he opened the mac and did some adjustments, and fixed it.
Thank you very much.
Regards.