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FX-6300 Overclocking question(s)

post #1 of 6
Thread Starter 
My brother asked me to overclock his FX-6300 because I told him most stock CPU fans have some room for faster clock speeds, my experience in overclocking in in sandy bridge E and especially Ivy bridge so I have no experience with AMD. I was referring to this guide to learn the jist of vishera but all I could find was this, for buldoser/piledriver ( http://www.overclock.net/t/1348623/amd-bulldozer-and-piledriver-overclocking-guide-asus-motherboard ). I was reading it and came across the part where it says thermal and voltage limits for the CPU where it says 1.55v which I think is pretty normal. but it says 62 degrees core and 72 degrees socket. On all of the CPUs I've worked with the rule of thumb was under 85 degrees. Does this mean I could not go over 62 degrees for core temp? are AMD chips just more susceptible to heat? I wouldn't be surprised if 62 was right, it just seemed strange to me. If this true I don't know how much I can actually do, at the 4.1 GHz turbo it goes to 58 degrees. If you have any answers to any of these questions please share.

All Input Appreciated
Thanks.
post #2 of 6
Unlike Intel chips, the thermal limits are lower for AMD chips. Stay below 62c smile.gif and if you want to go higher, then a max of 70 during p95.
Jay
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Jay
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post #3 of 6
Thread Starter 
Quote:
Originally Posted by jason387 View Post

Unlike Intel chips, the thermal limits are lower for AMD chips. Stay below 62c smile.gif and if you want to go higher, then a max of 70 during p95.

Small FFTs?
post #4 of 6
hello,
1.45v is near the max with the fx, they reach the turbo speed with ease and generally don't need voltage change to reach it, but beware of temps, 70c of either core or cpu temperature is max on fx 6 chips.

I rigged mine to use less voltage and it runs at turbo speed of 4ghz.
the 8120's temp is silly. mad.gif
Edited by MrPerforations - 3/5/14 at 8:47pm
    
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post #5 of 6
The simple answer, is that the temperature reading, and the ACTUAL temperature are not the same. The important thing, is to stay within the "number" limits. For FX-6300, don't let the "number" go over 70. The actual core temp is likely higher by ~10-20C+, but this is irrelevant as that is taken into account for the "limits" that have been set.


Think about this for a moment...

On the FX-8XXX series, it's common to have CORE temps reading ~10C cooler than socket temps. The socket temp is measured under the CPU by an actual temp probe, the CORE temp is supposed to be INSIDE the CPU (there are parts of the chip dedicated to reading temp, but the output from them is all thrown together into an algorithm to come up with a number to "report"). There is no possible way, within the laws of thermodynamics within this context, for a place OUTSIDE of the heat-source to be hotter than the source itself, unless the source were emitting radiation outside of thermal bands that was being absorbed/converted to thermal by a near-by outside object (not likely).

The complex answer to this conundrum, is that the core temp reported is indeed just a "relative" number. In fact, I would venture to guess that the actual core temp reporting is off by approximately -10-20C+ across the entire range (this explains the sub-ambient reporting at idle, and how we are able to achieve dissipation characteristics we do to typical HSFs with such "low" deltas compared to intel chips. Think about that for a moment... how would we dissipate double the thermal energy across a lower delta, it doesn't make sense). The amount that it is "off" by, depends on whether it is an FX-8 or FX-4/6, as the number of inputs "for" the temp-reporting construct winds up effecting the output, based on the algorithm. I have no doubt that a ~60C reporting on an FX-8 chip is probably ~80C+ actual, and ~70C reporting on an FX-6/4 chip is probably ~80C+ actual as well. Actual core temps could be far higher than that still. 100C is boiling point for WATER. It's not a melting point for sand or anything. Look at "max temps" for lots of other semiconductors, they tend to be ~100C+/-10. This points to an obvious "offset" in place here with the reported AMD temps.
Edited by mdocod - 3/8/14 at 9:01am
     
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post #6 of 6
Quote:
On the FX-8XXX series, it's common to have CORE temps reading ~10C cooler than socket temps.

Yeah, a lot of people report that, which I find strange. Thats not the case for me, my core temps, under load over 40C, are always higher than my socket temps. I do have a 92mm fan @7v on the back of the motherboard though.
    
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