Need help to find a stable overclock for FX-8150

[Flasken]

Hi OC's,

I have always wished for an performance desktop-pc for gaming and now after several laptops I managed to get one - yey!

I focused in the autumn to get good quality products that are easy to use and usable for OC. Since this is my first build ever I looked through bunches of videos, guides and threads the last couple of months. In my daily life is I'm an engineer so tech in general and abstract thinking are not strange to me...

Well here we go.. I have the Asus Sabertooth 990FX card and the FX8150 cooled by a H80 from Corsair - pretty standard. Me memory is Corsair vengeance. 2 x 4GB CL7:7-8-8-24. I first went with the CPU to 4.0 GHz (200 MHz with multi 20) @ 1.48v. The memory was manually set at 1600 MHz and CPU/NB @ 1.35v. The VRM settings was set to MAX power including disabled AMP. This should to me be a first safe step ( still saying I have no experience what so ever!) but didn't worked for me. After boot in MS Win8 I checked the settings and started Prime95 in small FFT mode - the comp freeze within sec.

I have looked through [Advice] Recieving poor results with FX-8150 Overclocking but didn't helped me and in stock/auto settings the prime95 worked fine for 8+ hours at temp < 36 deg C.

What am I missing to get a working stable OC?

Some other questions that have arose:
1) What is max temps for MB, RAM and CPU? 70 deg C?
2) CPU power duty control - what is this? T probe thermal or C probe current? huh?
3) Should CPU/NB and Memory freq be on auto or how should this be handled?

Thanks,
R

[PoLoMoTo]

I'm not an AMD guy but from what I cant tell you must've really done something wrong (no offense) because the FX8150 should do 4.2GHz out of the box, try putting it back to stock everything and see if you can get it anywhere by only changing the CPU multiplier, again just a thought as I'm not very knowledgeable on the AMD stuff (Intel is better anyway :P jkjk)

[SamCR3]

I'm at work now but will respond in detail later. Make sure you disable turbo core and all the power saving features. The voltages you listed above should be good for at least 4.6GHz (and probably more). Don't let any of the cores go over 61 degrees C. Socket temp doesn't matter. Use a program called core temps to monitor temps while oc'ing.

[Flasken]

Hi,

Thanks for the replies.

I tried to load stock settings again and only fiddle with multiplier but didn't work...

I have uploaded pics of my bios settings so you guys can see what I have been doing.
Regarding RAM - I have only selected 1600 MHz since the MOBO by default chose 1333... Since it picked up the wrong speed on the ram the timings are also off. CL9-something and my RAM are born to be CL7 (see my profile).

http://flasken.dk/misc/bios1.jpg
http://flasken.dk/misc/bios2.jpg
http://flasken.dk/misc/bios3.jpg
http://flasken.dk/misc/bios4.jpg


Thanks,
R

[SamCR3]

As to RAM, you always have to manually set it on an AMD board. Mine have always defaulted to 1333MHz. Your other setting look correct except you don't need all digi + vrm on extreme. Back them off a touch and you are using way to much cpu voltage. I was able to run 4.4GHz stable on my 8120 with 1.4 volts vcore and 1.3 volts cpu/nb. Sometimes too much voltage not only creates too much heat but also leads to instability. Set your multiplier so your system is running at 4.2GHz and slowly up the voltage until it's stable. When you run prime make sure you don't have other programs running in the background. Overclocking takes patience and each chip is a little different.

One last question, do you have the latest bios installed? If not, flash the bios and start over from the beginning.

Last, you may find some helpful info in this thread. My FX Build

[Flasken]

Hi,

Thanks for quick reply. I have the last couple of hours tried to make it work. but didn't succeed ...
I uses version 1604 which I believe is the newest??? I can't use R2 bios or?

I have now squeezed down the power settings one tick and the Vcore is 1.4v and CPU/NB 1.3v. RAM still set at 1600 MHz and timings right. The FSB is set to 200 MHz and multiplier is 18x (3.6 like the rating says). When I then boot up the bios now changes the settings to FSB speed 216 MHz and still 18x. The RAM speed is lowered to 14xx MHz and things are mess'ed up!

http://flasken.dk/misc/pscreen.jpg

What is going on?

/R

[Adham]

Hey Flasken, welcome to PureOC Forums ñ_ñ

[Flasken]

I still don't have a clue.. - anyone?

I have set the timings on RAM on auto all the way so that shouldn't interfere... The problem is that the FSB changes from 200 til 216ish (and the rest seems to be set to 'safe'-mode)