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Want to clock amd fx 8120 to 4.0ghz

Last response: in Overclocking
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May 31, 2012 1:33:40 AM

hey guys
finished building my new pc and im currently in the learning process of clocking my cpu. im wanting to slightly clock my amd fx 8120 from stock 3.1ghz to a ultra cool 4.0ghz. to do this what what steps and changes will I need to do to achieve this speed safely. im using asus uefi bios on a asus sabertooth 990fx mother board.i have an aftermarket cpu cooler zalman cnps 9900 nt.build specs as follows:

antec 1200 v3 case
asus sabertooth 990fx motherboard
amd fx 8120 cpu black edition
zalman cnps 9900 nt cpu cooler
corsair vengance 16gb ddr3 1866mhz ram
sapphire radeon hd 7950 gpu
rosewill 1000w power supply

More about : clock amd 8120 0ghz

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a b À AMD
a c 103 à CPUs
a c 190 K Overclocking
May 31, 2012 7:37:57 AM

First stop is the black edition clocking guide up top, you are looking at a muliplier increase, 200MHz ref clock multiplied by ??? equals 4000MHz, or 4GHz,
you will be increasing voltage so temps will increase, and, well read the guide and have fun, post back when you get stuck,
go easy on the voltage by the way, as too much can instantly kill your chip, google the chips specs for max voltage before you start messing :) 
Moto
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May 31, 2012 2:13:49 PM

I run an FX6100 with the Asus Sabertooth 990fx board and have it clocked at 4.0ghz. Like motopsychodjn was saying, look at the overclocking guide at the top of the forum. To get mine to 4.0ghz I simply had to change the multiplier and do a slight voltage increase. Originally I clocked it at 4.0ghz without the voltage increase but wasnt stable (1 error after 12 hours of prime95). Boosted the voltage and havent had any stability issues since. READ as much information as you can before overclocking, especially if you are going to play with the voltage.
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a c 329 À AMD
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June 14, 2012 1:01:12 AM

Want to clock amd fx 8120 to 4.0ghz < EASY to do,i've gone as high as 4.64 with stability.
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July 16, 2012 8:07:42 AM

@ Area51reopened : please can you share your settings here wid us.
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a b à CPUs
a b K Overclocking
July 17, 2012 4:07:39 AM

Yeah, just like all of the posts, all you need to do is increase your multiplier to achieve your goals. I have my 8120 running stable @4.4GHz, although I adjusted my FSB and multiplier together opposed to just the multiplier and also change my LLC to "high". this configuration has been running great for about a year now.

FSB: 215
Mulit: x20.5
RAM: @1600MHz (no OC)
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July 17, 2012 6:52:44 AM

that's great what CPU cooler you are using. ????
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July 17, 2012 8:45:55 AM

innocentb2 said:
that's great what CPU cooler you are using. ????



Antec Kuhler H20 920 with two Cougar vortex 120mm fans
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July 17, 2012 9:08:21 AM

ok and what is the ambient temp of your room ?
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July 17, 2012 9:14:18 AM

i request you to post the all settings voltage , multiplier , NB Voltage n all what all you have changed please post coz mine 8120 is not stable at 4.4 Ghz maybe i dnt hv the correct voltage.

so Please help if my machine will wrk stable on 4.4 you are going to save my 17.5 hours by every 100 3d max frames. i am using it for 3d rendering its performs outstanding on 4.4.
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July 17, 2012 2:05:36 PM



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I was a little off: FSB=205, Mullit=21.5
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July 17, 2012 2:25:26 PM

THANK YOU. :) 
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July 17, 2012 2:29:00 PM

Just have a little problem i am overclocking it wid ADM overdrive my default core voltage is showing 1.4000
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July 17, 2012 9:03:51 PM

OC'ing thorugh software is never recommended. do some research and OC through your BIOS
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July 19, 2012 8:54:52 PM

ok ko thank you
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July 20, 2012 10:14:12 AM

No problem, keeps us updated on your progress
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a c 329 À AMD
a c 745 à CPUs
a c 294 K Overclocking
July 22, 2012 5:06:39 PM

I'm at 4.0 ghz on my FX8120 right now,click my banner.
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a b à CPUs
a b K Overclocking
July 23, 2012 5:30:04 AM

sweet, now you can start playing with the Multiplier and see where its stable.
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September 1, 2012 8:28:58 PM

i am running my 8120 on stock voltage n a few things disable just raise the multiplier in bios n running at 4.0 CPUID Temps i got was 52c and the was not all the times i got 48c to 49 most of the times doing amd overdrive stability test 40c per core was the highest
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September 2, 2012 7:17:09 PM

I have a HP H8-1240 Pavilion with the fx-8120. It does not allow me to have full control of the bios, so I had to overclock with amd overdrive. I used prime95 to test stability. It showed it was stable at 4.2. I have multiplier at 21, CPU VID voltage at 1.38, and NB Vid voltage at 1.21. I disable turbo through amd overdrive. I have a 950 watt power supply, 24 gb of ram, and Nvidia gtx-680 video card. My cooler is a zalman cnps8900 extreme. When I play a video game with the amd overdrive settings, there is constant stutter, and freezing. Without the amd overdrive at default, without overclock, I have no problems. Even if I raise the multiplier to 17 with voltages on default, I still run into problems. What can I do to stop the stuttering with the system overclocked?


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September 6, 2012 3:19:56 PM

It's a story of; Multi's, FSB's, NB's and voltages.

Start with the multipliers, find the highest clock stable using multipliers. Move on to FSB while trying to keep the multipliers as close to stock move the FSB frequency up, start with 10hz until it starts to get dicey then move down to 5hz intervals. Once you know your highest FSB and highest Multiplier you can hit most target speeds as long as voltages and thermals are under check.

Ratio: 18
FSB : 225
Clockspeed achieved: 4.025GHZ..

CPU/NB frequency 2200-2400mhz

vCore: lowest possible stable voltages, at 4ghz I will presume that is somewhere between 1.35 and 1.4v. You can work this out easily, either you won't boot, or you will freeze and hang up if you are running low voltage and alternatively your temps will rise but you are running stable that indicates to high vCore.

CPU/NB voltage again lowest stable voltage probably in the 1.250-1.30v range.

NB around 1.2v is good.

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September 6, 2012 7:02:27 PM

When I raised the multiplier even a little, games for stuttering. Can this have anything to do with hp boards not as stable, and locking bios?
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September 6, 2012 7:19:24 PM

Well it wouldn't be a HP board as HP don't make a board but they may have locked its Bios. Stutter can be internet/connection related too.
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September 6, 2012 11:26:06 PM

The Bios is locked. The only way to overeclock it is through software such as AMD overdrive. Whenever I raise the multiplier even slightley, games have stutter and freezing. It is fine at stock.
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September 7, 2012 6:10:10 AM

It is fine at stock yes, you can try override the bios with AMD overdrive including voltages, but with pre-built OEMs its very difficult to get round the limitations.

You may also experience stuttering due to the board used being very low spec, you may not be able to run the sort of power required through the motherboard to the relevent components. Stuttering is a sign of insufficient power. Also if you cannot increase the CPU/NB to match the higher clock speed you will get lagging due to the memory and L3 cache not able to keep up.
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October 16, 2012 7:54:42 PM

Best answer selected by chi101proof.
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October 16, 2012 8:07:15 PM


Thanks moto
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November 3, 2012 12:47:51 AM

Motopsychojdn said:
First stop is the black edition clocking guide up top, you are looking at a muliplier increase, 200MHz ref clock multiplied by ??? equals 4000MHz, or 4GHz,
you will be increasing voltage so temps will increase, and, well read the guide and have fun, post back when you get stuck,
go easy on the voltage by the way, as too much can instantly kill your chip, google the chips specs for max voltage before you start messing :) 
Moto


Hey moto thanks for your answer. Im still not sure where the black edition overclockers guide is that you recomended to me. Its on the page ? Where?
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April 27, 2013 5:05:52 PM

hey guys i couldnt help myself here not to post whats up with the fx8120 cpu.
im running a msi 990fxa-gd80v2 board with 16gig of gskill 1866 memory and a corsair h20 h100i water cooler
with 2 pull fans and 2 push fans, at 5000 rpm. a mushkin 1000watt modular power supply. the rest is irrelevant..

i got the cpu up as high as 5.6ghz thats right 5.6ghz and stable. but a lil warm. so i dropped it down to 5.2ghz stable.
25x225@1.584V with the memory down scaled to 1600. for the 5.6ghz. with temps at 40c idle and as high as 50c
23.5x225@1.525V with the same memory as 1600 at 5.28ghz. with temps at 34c and underload 42c and Very stable.
when i see these headlines "get your fx8120 to 4.0ghz" i laugh, thats a joke right ?
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