Overclocking 8320 with Noctua NH-D14

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leanmv

Honorable
Oct 30, 2013
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10,510
Hi everyone!

I've been overclocking my new 8320 and I've reached 4.3MHz (stable after 12 hours w/Prime95) but I've seen many people reaching 4.5 or even 5.0MHz.

Temps are not an issue, 46 C max, but I'm stuck with the Ratio (I think) I'm using 1.38V now, so I think I can push it a little bit more if needed, but if I raise the Ratio, Prime95 stress test fails.

Do I have to keep raising the voltage until stable? (staying below 1.5V of course)

MOBO Config:

AI Overclock Timer, Manual
CPU Ratio, 21.5
AMD Turbo CORE Technology, Disable
CPU Bus/PEG Frequency, Auto
PCIE Frequency, Auto
Memory Frequency, Auto
CPU/NB Frequency, 2200
HT Link Speed, 2600
CPU Spectrum, Auto
PCIe Speed Spectrum, Auto
EPU Power Saving Mode, Disable

CPU&NB Voltage, Manual Voltage
CPU Manual Voltage, 1.38 V
CPU/NB Manual Voltage, 1.25 V
CPU VDDA Voltage, Auto
DRAM Voltage, Auto
NB Voltage, Auto
NB HT Voltage, Auto
NB 1.8 Voltage, Auto
SB Voltage, Auto

CPU/NB Current Capability, 130%
CPU Power Phase Control, Extreme
CPU Voltage Frequency, Auto
CPU Power Duty Control, T. Probe the...
VRM Spread Spectrum, Disable
CPU Power Response Control, Auto
CPU/NB Power Response Control, Auto
CPU Power Thermal Control, 130
DRAM Current Capability, 100%
DRAM Voltage Frequency, 300
DRAM Power Phase Control, Optimized

Cool'n' Quiet, Disable
C1E, Enable
SVM, Disable
Core CG State, Disable
HPC Mode, Disable
Amp Master Mode, Auto

PC Specs:

Fractal Design Define R4
M5 A99FX PRO R2.0
AMD FX 8320
Noctua NH-D14
8GB Corsair CMV8GX3M2A1333C9
GTX 660Ti
iCute AP-700AS 700w

Thank you!
 
Solution
ingtar33



that was a typo... generally around 1.45-1.55V people hit their thermal max for the fx lineup. since you're at 1.45V and nearing your thermal max you're probably at the end of your overclocking unless you get a better cpu cooler.

and yes... if you're hitting 67-68C in prime you'll be fine. prime is a brutal test. your cpu won't come within 5C-10C of those temps under heavy day to day use. Heck, my cpu gets up to 53C on prime95 at it's overclock (it's a...
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ingtar33

ingtar33

Glorious
Dec 17, 2012
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turn on LLC; down clock the nb frequency back to 2000, and the ht frequency back to 2000, generally you want your nb frequency to be clocked around x3 the ram frequency (ddr3 1333 ram is clocked at 667... 667*3 = 2000); and HT should never be higher then the nb frequency (i doubt your mb even allows it to be higher).

you can bring those back up later if you want though you'll see little gain unless you plan to overclock your ram in the future.

now, you're going to bump the cpu multiplier up +0.5 and see what happens in prime95. if a core fails, the computer freezes, the computer restarts without a blue screen or prime or another app just crashes back to desktop your cpu is undervolted and you'll add +0.0125V to the vcore and try again. keep bumping vcore by +0.0125V incriments until prime runs stable.

There is one more wildcard in the equation. that's your psu. i'm unfamiliar with it, but if it's a junky psu your overclock will be limited by the quality of power coming from it. as i said, i'm unfamiliar with it so i don't know if that's limiting you or not. If after trying what i suggested and you still can't get your machines stable look into a more recognized quality psu brand like seasonic~
 
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leanmv

Honorable
Oct 30, 2013
11
0
10,510
Thxs for your response my friend, I'm going to start using your recommendations right away!

You're right, my PSU needs to be updated, not the best in the market for sure :p but for now I have to stay with it until my wallet is able for another update xD
 
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leanmv

Honorable
Oct 30, 2013
11
0
10,510
Ok, I've changed the CPU/NB Frequency to 2000 and the HT Link Speed to 2000.

I've changed the Multiplier to 22.0 reaching 4.4MHz now, and raised voltage to 1.38750 V. I've done a Small Prime95 for 15 min with no issues. The temp raise this time to 52 C. I'll do a 12 hours full test later of course.

I've tried to raise the Multiplier again to 22.5 (4.5MHz) but Prime95 crashed or a core failed. I started raising the voltage as you said but, to be able to maintain this setting I had to raise it up to 1.44 V with 60 C Temp... as 62 C being the limit... I went back to the 22.0 and 1.38750 V

 
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ingtar33

ingtar33

Glorious
Dec 17, 2012
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198
45,840
you can safely run a fx cpu a little hotter then that. 62 is sorta the max for a phenomII, fx cpus have a little more thermal room for you to play with... if you get up around 68-70C i'd say back it off... but at 62C you are still safe. 4.5V is nearing the max vcore you want to stuff into a fx cpu... so this is likely the last bump in multiplier you'll get away with. it's not an amazing overclock... and likely you won't get much more without a better cpu cooler.
 
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leanmv

Honorable
Oct 30, 2013
11
0
10,510
Let's say I pass the Prime95 test after raising the voltage and keeping temps at 66-67C for example... it will be ok then?

PS: I know the max CPU Voltage is 1.55V but, what do you mean with max vcore 4.5V? Did you mean 4.5MHz? or vcore is another voltage configuration?
 
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ingtar33

ingtar33

Glorious
Dec 17, 2012
9,017
198
45,840



that was a typo... generally around 1.45-1.55V people hit their thermal max for the fx lineup. since you're at 1.45V and nearing your thermal max you're probably at the end of your overclocking unless you get a better cpu cooler.

and yes... if you're hitting 67-68C in prime you'll be fine. prime is a brutal test. your cpu won't come within 5C-10C of those temps under heavy day to day use. Heck, my cpu gets up to 53C on prime95 at it's overclock (it's a phenomII which means at 58C it's at it's max temp) and during day to day heavy use never really breaks 40C (depends on the room temp). that's how brutal prime is on your cpu.

so if it's hitting 68-67C on prime it will be fine for day to day use. heck it will be fine for heavy extended use.
 
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Solution
ingtar33

ingtar33

Glorious
Dec 17, 2012
9,017
198
45,840


just a small note. you have an awesome cpu cooler... and i don't know your room temps... but you might want to look at redoing the thermal paste and see if that gets you some cooler temps. Just clean the chip and cooler off with some rubbing alcohol and q-tips. get a high quality thermal paste like arctic silver 5... check online for how to properly apply it (generally i prefer the bead method) practice a few times cleaning it each time, then apply it and see what happens to your temps.
 
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