safe voltage for AMD FX-8350 4.5Ghz OC

Jovan93

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May 18, 2014
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Hi there when i try to OC to 4.5 from 4.4,15 last or 7th core stop working after some time in prime95
the voltage is i think 1.38V

This is my specs:

Asus GTX760 DCII OC 2Gb
Asus M5A99FX Pro R2.0
AMD FX-8350 with CoolerMaster Hyper 212 EVO (push-pull)
Kingston HyperX Fury 1866MHz (now on the 2050MHz or something i want to find the 1866MHz to match the timing)
Seasonic M12II Evo 620W bronze +80

can someone show me some tutorial how to OC to 4.5 and to mach timing with this RAM MODULE
 


what do i need to send you to see if my timing of ram is ok? do you know that?
 


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same is for #2 is this that? and is it good? if you know maybe?
 
Does your motherboard have a D.O.C.P mode instead of manual? (Right at the top of AI Tweaker on ASUS).
When I was overclocking mine I found it a lot more reliable to choose the factory XMP profile for ram rather than punch things in manually, weirdly this isn't listed when it's set to Manual, but you can still change everything else in the same way for the rest of your OC.

As for safe voltage, AMD states 1.55v as being the limit, I would imagine you would overheat the hell out of it before you even get close to that figure.
Some folks say 1.45v should be the recommended 'safe' limit. Safe being not degrading the life of your processor too much, but again, heat is an issue.

Voltage is what degrades your CPU, it adds heat and over stresses things. While true heat is the biggest factor in lifespan, voltage does degrade things quicker, depending on the amount, even if it's within thermal limits.
Even if someone had the cooling for a 1.55v overclock, I can't imagine that chip would last very long at all.

To control the vdrop/vdroop make sure to set the CPU LLC (Load Line Calibration) to Ultra High in the BIOS. It overshoots the mark a little bit, but it beats undershooting. This setting is available under the Digi+ menu.

Whether or not you'll need a voltage bump for 4.5GHz from 4.4 depends how lucky you got with your chip. Apparently most Piledriver chips can go between 400-500MHz on stock volts (Well, kinda, like I said the LLC will overshoot by around 0.02v).
If your motherboard has these of course, I'm not sure if it's reserved for the Sabertooth, but I'm pretty certain they're similar BIOS wise.

Also, use HWMonitor and CPU-Z to monitor temps/frequency/volts, not the ASUS software.
 


i was using HardwareMonitor and max temp on smallFFT in prime95 was 58.5c with my curent voltage and OC which is 4.4,15 couse i just found out that my Timing on the ram is ok i will not change a thing so i will not experiment ill check now how much the temps are couse i changed a few things and temps are much cooler it droped from 72c-74c max on GPU 100% load to 65c-67c max ill check now temps on CPU but will not change a thing just curious but thanks for the heads up and tips i will not risk it im good with this
i was using this video to OC my CPU:
https://www.youtube.com/watch?v=MckeAmnDeTk
very good tutorial
 


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here we go that was largeFFT to see consumption and heat at the max this is it its down by 1.5c its ok some progress is made see the temps outside last LargeFFT was during the night maybe 10c less then now so its an awesome result i think that i did a good job with the cooling
 
I don't know if it makes a difference, but Small FFT is usually the go-to in Prime95 for CPU stress testing.

Edit: Also, what version of HWMonitor is that 😵 Never seen it display frequency before. Kinda want.
 


yea but i wanted to see temps i know that its stable this OC ill check it later but now im going to get ready for World Cup chears