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Asrock Pro Motherboard handling long term OC

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a b V Motherboard
August 20, 2012 1:06:33 PM

Hello everyone,

So I have a question about overclocking on my rig, and specially about the motherboard.

Specs:
AsRock P67 Pro
I7 2600k
Geil Black Dragon DDR3 1333 4x4 GB
Cooler Master V8
Cooler Master HAF 912+
Enermax Platimax 750W - 80 Plus Platinum
GTX560 TI TOP

So I know about the bit of "trickiness" of the OC on AsRock mobos, but that is not the case. I know that the motherboard has V8 + 2 power phase design. And I am not such a huge expert in electricity, I was wondering how much the motherboard will last at a modest 4GHz OC for daily 24/7 use ( more expensive boards go from 10+2 and up ). I do a lot of rendering so I kinda max the CPU on lot of occasions for large periods of time. eXtreme Power Supply Calculator shows that the OCed CPU will draw 140W and Thermaltake Power Supply Calculator shows 126W. I am planning on using this set up in the long term so i was wondering how long can it survive ( because the motherboard is not high end tier ).
a c 716 V Motherboard
August 20, 2012 1:33:38 PM

Depends entirely on your OC, there's 'good' 4GHz and there's 'bad' 4GHz OC's. Sure the number and particularly the implementations of the Phases not to mention temp dictates the 'longevity' of both your MOBO AND CPU.

Q - What are all of your settings? ; particularly list ALL voltages (including Offset) and Phase control.

Thought, right now I'm running at Stock BUT when I render I load an OC Profile and reboot so in less then 60 seconds I'm @ 4.8GHz -> http://valid.canardpc.com/show_oc.php?id=2320509
a b V Motherboard
August 20, 2012 2:23:42 PM

Well you got me there. I am not a specialist in electricity ( i have only basic knowledge about electrical circuits ) and I to be honest I don't even know where and how to look for them. In the thread "VRM (phase control) & Mosfets / Motherboard Safety " there is a link - https://spreadsheets.google.com/spreadsheet/pub?key=0Ag... . I was wondering can someone provide the same but for intel motherboards ( i tried finding it, but no luck .... )
Related resources
a c 716 V Motherboard
August 20, 2012 3:12:08 PM

CPU's it's Electromigration and Capacitors it's aging and practically every component on the MOBO involved in VRM and Phase controls has some form of degrading, weakness and eventual failure.

Again, it's voltage, temperatures, weaknesses and time so the more 'stressed' the system the quicker the inevitable failure.
a b V Motherboard
August 20, 2012 3:37:55 PM

Yes, I believe this is a well known fact. The HAF+ brings very good cooling to the mobo so i think i got that part covered. About the Vcore, i was calculating with 1.4 ( just in case ) but i think i can get with a lot less for the 4ghz aim.

When purchasing the PSU, I used 2 calculators and set the system load on peak 100% and capacitor aging on 35%. Of course then the calculation changed to from a minimum of 540/570W(depending on the calculator) to 705/720W (again depending on the calculator). And as far as i know, if you wish to keep your motherboard in good health, one of the main things is noise and ripple free current coming into it. So thats why I purchesed a plus platinium psu. Do you think i am on the right way or i could have done something different? ( i just want to improve :p  )
a c 716 V Motherboard
August 20, 2012 4:21:14 PM

PSU - 'ripple' unfortunately has little to do with its Efficiency Rating. The SeaSonic, Corsair (produced by SeaSonic) and your Enermax are good PSU's with minimal 'rippling' @ full Rated Loads.

PSU Calculator - http://www.thermaltake.outervision.com/ If OC'ing and e.g. Futuremark testing then TDP and Load 100% and Aging 25%+ percent, but otherwise Defaults and Aging 25%+; ideally 30%~60% load is the optimal efficiency (most PSU's).

OC - SB i7-2600K 4.0GHz @ 1.40v would be a horrible OC, and the vCore should be 1.10v~1.15v or less. OC'ing the i7-2600K 4.7GHz~4.9GHz @ 1.30v~1.37v.

High OC's are both CPU and MOBO 'Phase' dependent and on the SB the 'magical' number has been 12 Phase to CPU and anything more has very little impact. Examples ASRock P67 Pro 8 Phase vs ASUS P8P67 PRO 12 Phase. Translated the 'better' the Phase implementation the (to a degree) the lower vCore is required to prevent the CPU from dropping out with variable loads and clocks. The 'better' long-term OC's employ an Offset and allow all the CPU's energy savings (C-States Enabled); all my OC's allow the CPU to drop to 1.2GHz under idle/low loads.
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