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TT BigWater report and ????

O

okashira

[H]ard|Gawd
Joined
Jul 7, 2005
Messages
1,802
just got my first watercooler. after I ordered it (bigwater) I checked this forum and many people feel that it "sucks"

heres how mines running:

Barton 2100+ or 2500+ (dont know, all I know is the stock multiplier is 11x, can anyone tell what I have? :)

now at 2350mhz, 1.904v

34°c idle
~41°c load

I was getting much higher temps, until I set an 80m fan over the waterbolock, and this lowered my asus probe numbers dramatically. I'm thinking my board isa bit funny about my temps, perhaps asus probe is not reporting actual cpu core temps. when quickly reboot, after running prime95 for a while for max tems, the BIOS always reports 80°F and quickly drops to 75°F
runnng an a7n8x-D.

what do I belive? im stating to think that the bios is showing actual cpu temp and probe shows chipset temp??? why would setting a fan over the water block lower temps so much?? the waterblock feels cool to the touch even under max load for a long period.

another Q: whats another good heat-producer/stability tester besides prime95?

thanks!
 
okashira said:
why would setting a fan over the water block lower temps so much?? the waterblock feels cool to the touch even under max load for a long period.

another Q: whats another good heat-producer/stability tester besides prime95?
Click to expand...

CPUBURN

Usually it is related to the air going by something near a probe. Are you speaking of the thermistor under the CPU or do you have a separate probe running to that part of the board somewhere?
 
I have no installed probes. Im just saying that asus probe(asus temp software) and the bios show very different temperatures for the cpu core.
 
That's quite normal. Did you by any chance get the in-line coolant thermometer made by Tt?
 
The A7N8X doesn't report the CPU die/core temp, but instead has a thermistor under the CPU socket that sits about 5mm away from the base of the CPU.

When you stick a fan blowing over the CPU area, cool air leaks in under the CPU socket area and cools the thermistor down, lowering the reported temperatures.

The A7N8X also lowers the reported temperature coming from the thermistor by around 5-10C or so once you get into Windows.

This is just another example of why people are unable to compare temperatures while using motherboard sensors.
 
I see. but why does the bios always show ~80°F after a quick reboot w/ loading the cpu?

No, I didnt get the TT temp sensor, but I do have an infrared thermometer
 
MB bios's are notorious for reporting erroneous temps. The only thing they are good for is to detect a BIG shift in temps or to be used to shutdown a high temp CPU. If you are water cooling the only temps you should be checking are the water temps and ambient temps (room air). You can still use the other software and BIOS tools, but just be aware of the fact that you cannot compare your temps with what someone else is getting. Those MB sensors have such a wide tolerance that any comparisons to other systems are fruitless.
 
Top Nurse said:
MB bios's are notorious for reporting erroneous temps. The only thing they are good for is to detect a BIG shift in temps or to be used to shutdown a high temp CPU. If you are water cooling the only temps you should be checking are the water temps and ambient temps (room air). You can still use the other software and BIOS tools, but just be aware of the fact that you cannot compare your temps with what someone else is getting. Those MB sensors have such a wide tolerance that any comparisons to other systems are fruitless.
Click to expand...


Unfortunately water temps dont tell you much either unless you want to scatter them all over the loop, and even then they wont be sensitive enough to do you any real good. As it wont let you know how your CPU is fairing. Only water temps in used in conjunction with CPU temp probes, and a little common sense, will do any good. Oh and thank you for reinforcing my opinion as to why [H]ardOCP Watercooling reviews are useless ;) (unrepeatable motherboard temp sensors and such other variable factors making cross site and even cross review comparisons useless, hence the entire review)
 
Erasmus354 said:
Unfortunately water temps dont tell you much either unless you want to scatter them all over the loop, and even then they wont be sensitive enough to do you any real good. As it wont let you know how your CPU is fairing. Only water temps in used in conjunction with CPU temp probes, and a little common sense, will do any good. Oh and thank you for reinforcing my opinion as to why [H]ardOCP Watercooling reviews are useless ;) (unrepeatable motherboard temp sensors and such other variable factors making cross site and even cross review comparisons useless, hence the entire review)
Click to expand...

Well....some people have the right equipment to look at all those different temps and they are sensitive enough for the job at hand :p As far as the [H] reviews go they compare different blocks on the same everything when they run reviews.
 
Top Nurse said:
Well....some people have the right equipment to look at all those different temps and they are sensitive enough for the job at hand :p As far as the [H] reviews go they compare different blocks on the same everything when they run reviews.
Click to expand...


If you dont trust the bios temps then for darn sure dont rely on water temps to protect your cpu. By the time the water temps rise your cpu could be toast. And if the cpu is not contacting the water block properly you might not even see water temps go up at all before its too late.

Bios shutdown temps normally would prevent this, however I dont have your motherboard and I dont know with how far off its sensor is.
 
It looks like you have a Barton 2500 running with a 214 FSB. Stock voltage if I recall should be about 1.65 or so.

At 1.90 volts you are WAY over volted. I have one running at that speed at 1.8. If you absolutely have to be at 1.9 you will lower your CPU life at any temp.

That said, your CPU temp is read by a sensor under the CPU located in the center of the socket. I’d remove the CPU and carefully bend the sensor (you can’t miss it, it’s sticking up in plain sight) upwards just a bit until you’re sure it’s making full contact with the bottom of your CPU. As Cather pointed out the gap can be an issue and this adjustment should help stabilize your readings a bit.

I have the same CPU at the same speed and a temp reading on air (heat pipe cooler) of 49c, however as TN pointed out, that’s my reading and has nothing to do with yours.

If after all that you are reading anywhere in the low 40c range then you are doing pretty well with you’re water-cooling system considering it is a basic system. Worst case it will give you the “bug” to get a bigger one ;)

Luck
 
thanks. Im actually running 10x232 now. still 1.9v

ill bend that sensor when/if i remove the cpu. dont feel like redoing the block etc.

:)
 
UPDATE: got a 6800nu, and just picked up a koolance waterblock, now the 6800 has an on die sensor so its a little more accurate:

~391mhz core, 1.3v 82°C load temps (hdr demo) max overclock stock cooling
with koolance block: 439mhz core 1.4v 59°C load temps!
 
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