Scythe Ninja rev B temperatures - should I be worried?

fjodor2000 · Post by **fjodor2000** » Tue Feb 20, 2007 1:20 pm

Hi,

I have just installed a Scythe Ninja rev B CPU cooler. Currently I'm using it without the fan that came with it. In fact the only fan I have in my Antec SOLO case is the fan in my Seasonic S12 430W PSU (I have a Gigabyte 7600GS passively cooled GFX card). The computer is now extremely silent! However, when running Intel TAT (Thermal Analysis Tool), the idle temperature for the non-overclocked Core2Duo E6600 CPU is at 50 C, and at 100% load the temperature levels out at 78 C for both cores. The motherboard temperature is at around 40 to 45 C under idle vs 100% load, respectively.

Now I have some questions:

1. Are these temperatures high enough for me to be worried?
2. Have I mounted the CPU cooler incorrecctly, or are these temperatures to be expected?
3. Will I have to install the fan that came with the Scythe Ninja CPU cooler? I want to avoid any additional noise if possible!
4. My ASUS P5B-E Plus motherboard reports "CPU fan failure (press F1 to resume)" at every startup, since there is no CPU fan connected. Is there any way of getting rid of that warning message?

Thanks!

born2code · Post by **born2code** » Tue Feb 20, 2007 1:38 pm

Do you have a digital camera? A pic of your system with the case open would really help.

nici · Post by **nici** » Tue Feb 20, 2007 1:42 pm

I think SPCR should retest the Ninja, there's too many complaints about poor performance withthe Rev.B to ignore. I am also not happy with the performance of the Rev.B.

monkiman · Post by **monkiman** » Tue Feb 20, 2007 4:01 pm

Doesn't seem like an issue of bad performance considering he's running the Ninja passive. This is pretty much in line with SPCR test results.

That said - running a very slow fan should boost performance considerably without adding much noise.

fjodor2000 · Post by **fjodor2000** » Wed Feb 21, 2007 1:20 pm

monkiman wrote:Doesn't seem like an issue of bad performance considering he's running the Ninja passive. This is pretty much in line with SPCR test results.

That said - running a very slow fan should boost performance considerably without adding much noise.

The funny thing though is that even when the TRT utility reports 78 C, the metal that the Scythe Ninja is made of doesn't feel very warm. I would guess 35-40 C, and MUCH cooler than my passively cooled Gigabyte 7600GS GFX card. Could the TRT utility be providing an inaccurate measurement?

Also, since I'm not using the CPU to the max very often, if passively cooled I'd likely be running it at 50C 95% of the time, at 60C 4% of the time and at 75 C 1% of the time. Would you say that's within the safe limit?

Redzo · Post by **Redzo** » Mon Feb 26, 2007 2:42 am

Put a 12cm Nexus and run it at 5V. You will not hear the difference but it will take 10-12c off youre temps.

kakazza · Post by **kakazza** » Mon Feb 26, 2007 3:02 am

fjodor2000 wrote: The funny thing though is that even when the TRT utility reports 78 C, the metal that the Scythe Ninja is made of doesn't feel very warm. I would guess 35-40 C, and MUCH cooler than my passively cooled Gigabyte 7600GS GFX card. Could the TRT utility be providing an inaccurate measurement?

Lets see...
IHS... about 16-20cmÂ² maybe (dunno really)
Scythe Ninja... like 3800cmÂ²?

Now think, the bigger surface won't have the same temperature as the small one.

Nick Geraedts · Post by **Nick Geraedts** » Tue Feb 27, 2007 12:29 am

What happens if you feel the base of the Ninja - the heatpipes specifically. If they're also cool-ish, then I'm guessing that you've just got poor thermal paste application on there.

Like Redzo said, take a Nexus or S-Flex fan and run it at 5 or 7 volts. I'll give enough airflow to give a big drop in temperatures without any change in noise levels.

vincentfox · Post by **vincentfox** » Tue Feb 27, 2007 12:36 am

This is a frequent thread. It is apparently a common misunderstanding to think that the numbers returned to you by "temperature" programs actually represent real absolute temperature. I ran 3 programs simultaneously and readings disagreed by up to 20C. Please read the thread linked below. Particularly the post by cmthomson on page 2.

viewtopic.php?t=38072&postdays=0&postorder=asc&start=0

continuum · Post by **continuum** » Wed Feb 28, 2007 2:37 pm

The last two Scythe Ninja installs I did were on P5B Deluxe, PCB rev says 1.03G's...

E6400 @ 3.2ghz/1.35v is ~67C with TAT with Orthos, ambient temp of ~22C.
E6600 @ 3.2ghz/1.35v is ~65C with TAT with Orthos, ambient temp of ~22C.

So I wouldn't worry too much...