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The Truth about Temperatures and Voltages - Page 41

post #401 of 599
Do the i5s share the same specification tables as the i7s? I'll check later if I don't get a answer. I thought about getting one in compusa.. but I'm not paying 20 dollars more than what I can get it on newegg/microcenter for less.
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post #402 of 599
Quote:
Originally Posted by TwoCables View Post
Oh damn. Well then this Q6600's Tj. Max is certainly closer to 100°C. It certainly demonstrates how much of an approximation it is.
It also demonstrates that worrying about accurate temperatures is a fool's errand It's nice to have an estimate so you can see if you've got serious cooling problems, but besides that, it's just wasting time.
    
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post #403 of 599
Quote:
Originally Posted by randomizer View Post
It also demonstrates that worrying about accurate temperatures is a fool's errand It's nice to have an estimate so you can see if you've got serious cooling problems, but besides that, it's just wasting time.
Amen to that.
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post #404 of 599
Quote:
Originally Posted by randomizer View Post
It also demonstrates that worrying about accurate temperatures is a fool's errand It's nice to have an estimate so you can see if you've got serious cooling problems, but besides that, it's just wasting time.
yeah i know, but using 100C for the Q6600's tjmax is much more accurate than 90C as specified. anyway, just wanted to share my thoughts
post #405 of 599
Quote:
Originally Posted by pipnasty View Post
yeah i know, but using 100C for the Q6600's tjmax is much more accurate than 90C as specified.
I'd hesitate to say "much more accurate." But I'm a bit of a cynic
    
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post #406 of 599
Thread Starter 
Quote:
Originally Posted by pipnasty View Post
I'm a bit confused... I've always known 90c to be the tjmax of Q6600 G0 stepping, but have always used 100c for a better estimate.. after reading the article, it says I should use 90c bec. this is the more accurate one?

I mean, at idle temps = tjmax 90c is useless, but at load = tjmax 90c is accurate?

I ran prime95 overnight (7hrs) on my OC and my max temps were 57-57-54-54 (with tjmax of 100C), if I were to change tjmax to 90c that would mean 47-47-44-44?!? <--- too unrealistically cool imo
Remember that everything is relative. If your ambient temperature was 10C, then that good greatly skew the results as we see them. Without an ambient temperature, any temperature reading is useless/can't be compared. Also, low voltages (1.31250v if it's what you list in your sig rig) can produce great temps on an decent temperature; it's not until you really crank up the volts that the temperatures really start to rise (and the Ziggy is a good air cooler). To put it into perspective, with my old Q6600 G0 (lapped) using AS5 on my Lapped TRUE with 2xSan Ace 120's (The pinacle of air cooling at that time) would run Small FTTs in prime95 with core temps of 57 57 55 54 (Ambient 19C). That was running 3.6ghz with 1.43750v (Bios).

With a very mild overclock with relatively low voltages on a good air cooler, I can see lower temperatures...but notice that I didn't say that they were correct. Intel states that any temperature below 50C can only be considered a temperature below 50C. It could very well be that your TJ Max may be slightly higher, but I would bet it would be around +5 rather than +10. These are targets not 'roundabouts though Intel never released any information on relative error.

Regardless of this however, you distance to TJ Max is 43 on your hottest core which clearly shows that your air cooler is doing a great job and temperatures are not limiting your OC at all, which is what this article is about: Being safe and getting the most out of your OC/chip.


Quote:
Originally Posted by pipnasty View Post
yeah i know, but using 100C for the Q6600's tjmax is much more accurate than 90C as specified. anyway, just wanted to share my thoughts
Using 100C would be more accurate if you had a badly programmed CPU, but this is not the case. Your temperatures are just too low to accurately measure in the first place. The touch the heatsink and feel for warmth trick isn't accurate at all (not that I'm implying that you did), but you just can't tell without taking off the IHS and measuring it with an IR gun, and even then you would really need to measure where the thermal couple is, under the core not on top.


Quote:
Originally Posted by FSF-Foxhound View Post
Do the i5s share the same specification tables as the i7s? I'll check later if I don't get a answer. I thought about getting one in compusa.. but I'm not paying 20 dollars more than what I can get it on newegg/microcenter for less.
By specification table, do you mean thermal specification? If so, then they are very close. On Intel.com, the Thermal Spec for all current Socket 1156 chips is 72.7C, whereas all Socket 1366 chips are 67.9C (Didn't check EE Cpus)
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post #407 of 599
Quote:
Originally Posted by TwoCables View Post
60.1°C is the Thermal Specification which is very different from the Tj. Max. I'm not saying that it's different because it's a different number. I'm saying that the Tj. Max and the Thermal Specification are two separate things.

Now, according to the chart on the OP of this thread, the approximate Tj. Max for the E6600 is 80°C.

Who told you that the Thermal Specification of 60.1°C is the Tj. Max?
I see, I thought the Thermal specification and Tj Max were the same thing.

Now my idles are 34-35, which is about the same as the BIOS. I thought the BIOS was the moast accurate way to see your idle temps

Load temps are now up to about 55 when running small FFTs for a few minutes. I thought Large FFTs where the best for heat output?

Just realised how noob I am lol
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post #408 of 599
Quote:
Originally Posted by biltong View Post
I thought the BIOS was the moast accurate way to see your idle temps
They measure too different temperatures. So you can't compare them.

Quote:
Originally Posted by biltong View Post
I thought Large FFTs where the best for heat output?
Large FFTs can't fit completely in the CPU cache, and they don't create a consistent load, so small FFTs works better.
    
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post #409 of 599
Quote:
Originally Posted by randomizer View Post
They measure too different temperatures. So you can't compare them.
You mean two different temperatures
post #410 of 599
Quote:
Originally Posted by pipnasty View Post
You mean two different temperatures
Er... yes I do. The one post I don't proof read and it happens to be one with a spelling mistake
    
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