Originally Posted by ku4eto
Fairly normal i would say. Run IBT for 10-15 minutes on Maximum and check what temps you are reaching. If it start going over 90, stop it. Should average out somewhere around 80-85 during such stress test.
That is way to hot AMD themselfs say 72c is absolute max and recomend 62c as max safe and below on AMD FX 8 cores or any of the AMD FX 125w chips. I don't know where you get the 80c-85c thing and 90c stop but if it goes over 72c stop something is wrong you either got a crap cooler with poor case airflow or you did a bad TIM application or you got a bad chip or something.
I also want to point out on AMD FX CPU's as heat goes up the chips refuse more and more to release the heat to your cooling system and the chip itself's leakage characteristics increase making the chip get even hotter and draw more power essentially once temps get so high the AMD FX's go into thermal runaway like a nuclear reactor going into meltdown.
I can confirm all this directly from STILT himself the world renouned world record AMD FX Overclocker.
some info on stilts OC http://valid.x86.fr/vytt61
yes 8722.78mhz on all 8cores not 2cores like AMD set world record on.
Mar 22, 2015 at 8:37 am
Indeed, if forgot the specify the limits for the "socket temperature" (SBI-TSI).
These are the official AMD specifications.
AM3+ / TDP (Infra Code)
220W (FH) - 57.0°C
125W (FR) - 61.1°C
95W (WM) - 70.5°C
FM2+ / TDP (Infra Code)
95W (XB) - 72.0°C
65W (YB) - 71.2°C
These temperatures only apply at stock power levels.
At higher power dissipation they are naturally lower.
(also from the Stilt)
Based on my personal experience on hundreds of different AMD 15h parts; the overclocking capabilities of these chips generally start to show significant retardation when the "socket temperatures" (SBI-TSI) exceed 60°C. At this point the "package temperature" (tCTL control value) can be anything between 45 - 65 units. The tCTL value is calculated based on several values and one of it´s calculation parameters (power scalar) varies between different TDP and leakage level parts. The "package temperature" (tCTL) is not an actual temperature which is a reason I refer it as units instead of degrees.
The official specifications from AMD tend to agree with my experiences.
125W TDP FX parts are rated for 62°C (SBI-TSI) maximum temperature at stock settings.
The maximum "package temperature" (tCTL) is 70 units on all AMD FX CPUs (AMD specification)
In higher temperatures the leakage currents will increase even further and the thermal conductivity will reduce as well.
Lower thermal conductivity will make it yet harder to remove the heat from the CPU core.
151.1W/m-K @ 20°C
142.7W/m-K @ 40°C
134.3W/m-K @ 60°C
125.9W/m-K @ 80°C
SBI-TSI temperature is available on all motherboards as implementing it is mandatory.
This is also the temperature which the bios displays.
Generally there are two major manufacturers (ITE & Nuvoton) for the LPC/IO ICs which are used to read the SBI-TSI information from the CPU.
They are very well supported by most of the hardware monitoring applications atleast for the temperature part.
I want to point out I run AMD FX 9590 at full manual OC'd 5ghz x8 with eco features still on and top out at 52c with IBT AVX not the normal IBT because AVX is much more intense and will raise temps alot more than regular IBT here is my proof of such claims and I do this on custom liquid cooling http://www.overclock.net/t/1519033/5-ghz-24-7-oc-club/60#post_23194695Edited by rickcooperjr - 9/29/15 at 3:09pm