New Theory: GTX 7900 with 512 MB killed the motherboard ;) (Overheat !)

"martin griffith" wrote in message
...
On Thu, 21 Jun 2007 08:59:45 GMT, in sci.electronics.design Eeyore
wrote:



Lorenzo Sandini wrote:

You had a dead mobo, SO
WHAT ? Move on now.

The guy's a total lunatic.Ignore him.

Graham
I found a picture of him
http://tesladownunder.com/Tesla18Dalek10003Ft.jpg


martin

AND it even looks like a dick.

Be sure to pick up his next novel. Coming to a overly crossposted thread near you.

Well to answer my own questions:

1. Yes it's possible to underclock them with RivaTuner... though I did not
notice any temperature drops. (Not sure if clocks were really lower,
probably though)

(Maybe I'll try playing a game with lower clocks to see if I noticed
anything but for now it leave it at default).

(I also tried coolbits tweak but that didn't work)

2. Yes it's possible to manually control the fans of both cards... that was
pretty cool !

I set the fan of first card to full speed and there it went... vvvmmmmmmmm.

Then the fan of the second card to full speed... and ther eit went...
vmmmmmm.

They both can make some hell of a noise... Well it's in the morning anyway.

I can hear a nail drop on the street I guess though cars slowly started
to drive by

During real-world gaming they probably don't spin that hard ?

Anyway making them spin at full speed did drop the idle temperature from 53
degrees celcius to 48 degrees celcius during a minute of testing.

So that's a 5 degree drop...

I could also definetly notice more heat coming out of them at the back.

Kinda worrieing to see a 52 to 54 idle temperature with slow fans... hmmm.

Hmm not to happy with that... oh well..

Probably not gonna buy such a heat chips in the future that's for sure

Bye,
Skybuck.


"Skybuck Flying" wrote in message
...
Hello,

I noticed in the nvidia control panel the temperatures of the these two
graphics cards (sli) are 50 degrees celcius in idle mode !

That's pretty high !

Add to the fact that the gfx fans are probably spinning very slowly
because of idling,

Add to the fact the output holes are very tiny,

Add to the fact there is little spacing between them,

Add to the fact the airflow in the case was not optimal,

Add to the rumor the mb sensor is near the cards,

and there you have my new theory:

The GTX cards killed the motherboard ! Overheat !

Some questions:

1. Is it possible to underclock these cards ?

2. Is it possible to make the fans spin a bit faster even in idle mode ?

Bye,
Skybuck.

Well,

I also just took a look at an nvidia bios editor... which show the voltages
of the cards.

Apperently there are two pre-programmed voltages:

1. 1.3 volts for 2D.

2. 1.4 volts for 3D.

The cards probably switch voltage when going 3D or so ?

Well I am not sure if I can immediate change the voltage level or if I have
to flash it into the cards.

Ofcourse I am not going to try it because I don't know for sure what I am
doing and it's way to risky... but it was interesting to see this

Also the lowest value possible is probably 1.3 volts ?

So not much use anyway.

Bye,
Skybuck.

Just wanted to change the topic so I can find it later more easily

1. Riva tuner does the trick

Bye,
Skybuck.

"Skybuck Flying" wrote in message
...
Well to answer my own questions:

1. Yes it's possible to underclock them with RivaTuner... though I did not
notice any temperature drops. (Not sure if clocks were really lower,
probably though)

(Maybe I'll try playing a game with lower clocks to see if I noticed
anything but for now it leave it at default).

(I also tried coolbits tweak but that didn't work)

2. Yes it's possible to manually control the fans of both cards... that
was pretty cool !

I set the fan of first card to full speed and there it went...
vvvmmmmmmmm.

Then the fan of the second card to full speed... and ther eit went...
vmmmmmm.

They both can make some hell of a noise... Well it's in the morning
anyway.

I can hear a nail drop on the street I guess though cars slowly started
to drive by

During real-world gaming they probably don't spin that hard ?

Anyway making them spin at full speed did drop the idle temperature from
53 degrees celcius to 48 degrees celcius during a minute of testing.

So that's a 5 degree drop...

I could also definetly notice more heat coming out of them at the back.

Kinda worrieing to see a 52 to 54 idle temperature with slow fans... hmmm.

Hmm not to happy with that... oh well..

Probably not gonna buy such a heat chips in the future that's for sure

Bye,
Skybuck.


"Skybuck Flying" wrote in message
...
Hello,

I noticed in the nvidia control panel the temperatures of the these two
graphics cards (sli) are 50 degrees celcius in idle mode !

That's pretty high !

Add to the fact that the gfx fans are probably spinning very slowly
because of idling,

Add to the fact the output holes are very tiny,

Add to the fact there is little spacing between them,

Add to the fact the airflow in the case was not optimal,

Add to the rumor the mb sensor is near the cards,

and there you have my new theory:

The GTX cards killed the motherboard ! Overheat !

Some questions:

1. Is it possible to underclock these cards ?

2. Is it possible to make the fans spin a bit faster even in idle mode ?

Bye,
Skybuck.

On Sun, 24 Jun 2007 07:44:52 +0200, "Skybuck Flying"
wrote:

snip
Anyway making them spin at full speed did drop the idle temperature from 53
degrees celcius to 48 degrees celcius during a minute of testing.

So that's a 5 degree drop...

I could also definetly notice more heat coming out of them at the back.

Kinda worrieing to see a 52 to 54 idle temperature with slow fans... hmmm.

What's wrong with 50C. I'm used to seeing CPUs run tht and GPUs
normally run hotter from my experience. Some run much hotter.

snip

On Thu, 21 Jun 2007 04:30:16 +0200, "Skybuck Flying"
wrote:

Hello,

I noticed in the nvidia control panel the temperatures of the these two
graphics cards (sli) are 50 degrees celcius in idle mode !

That's pretty high

Really ? Is that so ? Why ?

With every posting you further expose yourself as a total
techno-illiterate..... Please get help from both your psychiatrist and
your original system-builder. Your psychiatrist will help alleviate
your cross-posting fetish and your system-builder might be willing to
use simple technical words that you can understand, particularly if
you pay him by the hour.

John Lewis

In article , "Roger (K8RI)" wrote:
On Sun, 24 Jun 2007 07:44:52 +0200, "Skybuck Flying"
wrote:

snip
Anyway making them spin at full speed did drop the idle temperature from 53
degrees celcius to 48 degrees celcius during a minute of testing.

So that's a 5 degree drop...

I could also definetly notice more heat coming out of them at the back.

Kinda worrieing to see a 52 to 54 idle temperature with slow fans... hmmm.

What's wrong with 50C. I'm used to seeing CPUs run tht and GPUs
normally run hotter from my experience. Some run much hotter.

snip



My Core 2 Duo 6600 CPU hasnt even broken 30C while overclocked to 3.2 Ghz

"GMAN" wrote in message
...
In article , "Roger (K8RI)"
wrote:
On Sun, 24 Jun 2007 07:44:52 +0200, "Skybuck Flying"
wrote:

snip
Anyway making them spin at full speed did drop the idle temperature from
53
degrees celcius to 48 degrees celcius during a minute of testing.

So that's a 5 degree drop...

I could also definetly notice more heat coming out of them at the back.

Kinda worrieing to see a 52 to 54 idle temperature with slow fans...
hmmm.

What's wrong with 50C. I'm used to seeing CPUs run tht and GPUs
normally run hotter from my experience. Some run much hotter.

snip



My Core 2 Duo 6600 CPU hasnt even broken 30C while overclocked to 3.2 Ghz


That would be great information if they were talking about CPU temps.....

Dan

And also if the temperature were not being estimated by the touch test B^

Phil Weldon