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Discussion Starter · #1 ·
I am in need of some help overclocking my fx8350. I can currently run at about 4.7ghz but it is only 90% stable. I used Occt to test my overclock most of the time it passes but my temps have reached 65 on cores which from what I have read isn't good therefore I feel like I may not be applying the correct voltages. I would like to know if anyone can not only help me to stablize my overclock but if at all possible I would like to reach as close to 5ghz as possible.
My specs are as follows
Msi 890fxa-gd70
Amd FX8350 BE (4.7ghz 90% stable)
H100 push pull 4 fans as exhaust out of the top of case
InWin dragon rider case
OCZ 1250w zxseries psu
16gb corsair vengance 1600 ddr3 with a ram cooler (just in case)(stock)
Crossfired asus hd6950 dcii 2gb (stock)
Ocz agility 3 120gb Ssd (win 7 ultimate 64bit)
Crucial M4 256gb Ssd (demanding games)
2x 500gb WD cav. Blue in raid stripe (steam)
Seagate 350gb sata mini Hdd (backup/music)

Currently my Cell bios settings are
Amd c&q disabled
C1e disabled
Svm disabled
Fsb 200
Cpu ratio 23.5
Cpu-nb ratio I set to 12x to bring frequency to 2400 (highest I can go without fsb change)
Amd turbo core disabled
Unlock cpu core disabled
Oc genie and dial function disabled
Fsb/dram ratio I set this to 1:4 to get my stock speeds of 1600 (can change to 1866)
Ht link speed I set this to 12x to bring my ht frequency to 2400 too...because when on auto i was 2600 but when cpu-nb was on auto it was set to 2000. Cant go higher than that.

Voltages
Cpu vdd voltage-auto
Cpu-nb vdd voltage-1.25
Cpu voltage-1.547 (OCCT shows only 1.46)
Cpu-nb voltage-1.255
Cpu PLL voltage-2.522
Cpu ddr-phy voltage-auto
Dram voltage-1.528
DDER VREF voltage-auto
Ddr vtt voltage-auto
Nb voltage-auto
Nb PCI-E voltage-auto
Ht link voltage-auto
SB voltage-auto
Spread spectrum-disabled

If anyone could give me some advice I would appreciate it very much...thanks in advance.
 

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Quote:
Originally Posted by DerMoor86 View Post

I am in need of some help overclocking my fx8350. I can currently run at about 4.7ghz but it is only 90% stable. I used Occt to test my overclock most of the time it passes but my temps have reached 65 on cores which from what I have read isn't good therefore I feel like I may not be applying the correct voltages. I would like to know if anyone can not only help me to stablize my overclock but if at all possible I would like to reach as close to 5ghz as possible.
My specs are as follows
Msi 890fxa-gd70
Amd FX8350 BE (4.7ghz 90% stable)
H100 push pull 4 fans as exhaust out of the top of case
InWin dragon rider case
OCZ 1250w zxseries psu
16gb corsair vengance 1600 ddr3 with a ram cooler (just in case)(stock)
Crossfired asus hd6950 dcii 2gb (stock)
Ocz agility 3 120gb Ssd (win 7 ultimate 64bit)
Crucial M4 256gb Ssd (demanding games)
2x 500gb WD cav. Blue in raid stripe (steam)
Seagate 350gb sata mini Hdd (backup/music)

Currently my Cell bios settings are
Amd c&q disabled
C1e disabled
Svm disabled
Fsb 200
Cpu ratio 23.5
Cpu-nb ratio I set to 12x to bring frequency to 2400 (highest I can go without fsb change)
Amd turbo core disabled
Unlock cpu core disabled
Oc genie and dial function disabled
Fsb/dram ratio I set this to 1:4 to get my stock speeds of 1600 (can change to 1866)
Ht link speed I set this to 12x to bring my ht frequency to 2400 too...because when on auto i was 2600 but when cpu-nb was on auto it was set to 2000. Cant go higher than that.

Voltages
Cpu vdd voltage-auto
Cpu-nb vdd voltage-1.25
Cpu voltage-1.547 (OCCT shows only 1.46)
Cpu-nb voltage-1.255
Cpu PLL voltage-2.522
Cpu ddr-phy voltage-auto
Dram voltage-1.528
DDER VREF voltage-auto
Ddr vtt voltage-auto
Nb voltage-auto
Nb PCI-E voltage-auto
Ht link voltage-auto
SB voltage-auto
Spread spectrum-disabled

If anyone could give me some advice I would appreciate it very much...thanks in advance.
If OCCT only shows your voltage at 1.46 when you set it to 1.547 then you need to enable LLC settings in the BIOS. Do that then manually set your voltage to 1.46. What does the rest of your build look like? Fill out a rig builder. Are the fans set to Performance on your H100? If not do that and give it a bit more voltage.
 

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Discussion Starter · #3 ·
I have seen many posts about LLC and enabling it and/or setting it higher (?).....I.E. high/ultra. I for the life of me cannot find this anywhere. I understand I should do a little more research but I do not fully understand LLC. Also in my bios my fans show that they are set to 100%. I do not have the h100i or the corsair fan controller so I cannot be certain that my fans are set to a performance profile. I will take pictures of my bios so maybe you could show me where it is.
 

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Quote:
Originally Posted by DerMoor86 View Post

Bump
Fill out a rig builder and put in in your signature. It would make our lives much easier.
 

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hello,

this explains some of the llc function...

list of guides to follow here,

http://www.overclock.net/t/226939/amd-cpus-current-tech-essentials-older-tech-link-included

please read a guide to understand how your bios setting work.

I like this one the most,

http://www.overclock.net/t/1348623/amd-bulldozer-and-piledriver-overclocking-guide-asus-motherboard

if you do understand then its easy as this....Disclaimer

http://en.wikipedia.org/wiki/Disclaimer

if you follow the advice below, you do this at your own risk and at risk, your personal computer is all your own property and problem, and is not mine.

please monitor your temp with hwmonitor and cpu-z for reading clocks,

http://www.cpuid.com/softwares/hwmonitor.html

http://www.cpuid.com/softwares/cpu-z.html

70c of any cpu temp [cpu or core temp] is max for the FX4xxx and FX6xxx
and 61c of any cpu temp [cpu or core temp] is max for the FX8xxx,

then....

one: go in to bios, hit del at start-up till you get to a blue-grey screen before windows.

two: go to the advanced tab, then go in to cpu config and disable cool and quite and everything there on that tab.(c1e,c6 state, hpc and apm (application power management))

three: press esc and go down one to northbridge, go in there and theres one thing to go in to , there you will see ECC enabled, disable that.( happens on asus mobo's)

now for the overclock......

four: got to the ai tuner tab of bios and change it to manual from auto.

five: got to cpu ratio and change to 20 x

six: disable turbo core

seven: go to ref clock and change to 200

eight: change your ram to the right speed, 1600mhz or whatever and set your ram timings.

nine: go to cpu load line calibration and change to high (I use ultra high on my m5a99x evo and on the sabretooth i found it to be medium)

ten: go to cpu voltage change to manual and change that to 1.29v (1.325v is stock).

now got to that last tab in bios save and exit.

you should now boot at 4ghz and be near stable under full load.

download cpu test programs

hyper pi is a memory test program, but it runs cooler than most cpu tests and will usually crash with os still running.
good for instantly knowing if your cpu is nearing stability.

http://www.softpedia.com/get/System/System-Info/Hyper-PI.shtml

occt is stability test program, will usually crash hardware and software if cpu/system is unstable.
good for long term oc tests.

http://www.ocbase.com/

need to test your cpu load line config with a heavy load ,use hyper pi, watch your voltage and give it a 1m test, what voltage do you get under full load?,
now move you load line up or down for increases or decreases to voltage and make it level under full load.
if you go extreme llc, lower voltage of cpu as it will climb a bit under load.

now run a full hour cpu test to see if it's stable, I used occt medium test for 2 hours.

i got a nice 4ghz stable at 1.284v at idle and under full load.

I did manage to get six core of the eight up to 4.6ghz with 1.464v showing in cpu-z.
it had heat issues after that, and my mobo is only a 6+2 vrm.

EDIT;this is my copy and paste advice for fx.
 

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The motherboard you are using does not have LLC ( that i am aware of), so it will allow the voltage to the cpu to droop when under 100% load. OCCT is telling you that your V-droop is about .08 volts at load. The fact that you are getting semi stable at 4.7 Ghz @ 1.46 volts is actually pretty good. Very important to realize that voltage at load is the thing to look at. Lots of people quote a low voltage for a given clock when using a board with LLC, the dirty secret is that voltage is while its under no load. LLC can push voltages well above that when under a load.

Be very careful to have good airflow over your VRM's if you want to push harder.
Having said that, it's my opinion and if you decide to try this it is at YOUR OWN RISK but you can up your voltage to a setting of 1.6 to the cpu and still be under the accepted 1.55 "safe voltage" for the cpu when at load factoring in your .08 droop ( should be around 1.53 or so which is the minimum most 8350's need to do 5ghz.) The other thing to consider is your motherboard will be sending a heck of a lot of power to the cpu, It will need very good airflow over it if it is to have a chance to survive. Watch your temps, my opinion is that you should do everything possible to keep it under 50 C on the chip.

To be honest though , it's not real practical to run these chips that hard. The difference in voltages that they require from 4.8 ghz to 5ghz is pretty huge, and the gains are not nearly in proportion.
 

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After reviewing the spec's on your motherboard, It's probably not a good idea to push any harder than you already are. I was thinking the GD-70 had 8+2 power phasing but it is the 890FXA gd-65 that is 8+2 and the 70 remained at 4+1 power phases. Really tempting fate if you want to go faster.
You may want to read up on this thread about VRM's on AMD motherboards.

http://www.overclock.net/t/946407/amd-motherboards-vrm-info-database
 
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