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post #4651 of 5036
Quote:
Originally Posted by chrischris View Post

Am I OK not touching any voltages?
My choice for HT speed was 2120 or 18XX...I read that I want to be at 2000Mhz...so is higher or lower then 2k better?
How do I know what to set my CPU/NB frequency too? I randomly chose 2385Mhz.
My RAM frequency options were 1412Mhz or 17XX...I'm sure I wont notice a difference, but which speed is better? Also of note: CPU-Z says my DRAM freq is 709Mhz....w-t-f?

Any help is appreciated. If I cant figure this out I will likely try Asus auto tuner which takes the CPU to 3.2Ghz.

You're ok not touching the voltage but you'll want to run Prime for longer than just 30 minutes to be sure. Have you tried benchmarks and games yet? They all use the CPU in different ways and will show you instability when you crash.

Close to 2000 is fine. It's difficult to be right on it. I always go with the one above 2000 till it get to the point where I just drop the multiplier down by 1 and it's at 2000. That's just personal preference though. Really you just need to go with the one that gets you better stability.

AMD's Thuban overclocking guide said to have it 1.5x the RAM speed. There was a testing done awhile back that showed anything above 3000 mhz didn't show much if any worthy gains. So my rule of thumb was over 1.5x the RAM speed but under 3000 mhz.

You won't notice a difference between those RAM speeds. Thubans likes tighter timings over speeds.

CPU-z is showing the actual RAM speed. Your sticks are DDR's or Double Data Rate. The read AND write on the same bus. So technically your RAM are actually going double the speed. That's the simple way of putting it.
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post #4652 of 5036
Quote:
Originally Posted by Atomfix View Post


FSB: 310
CPU: 4030MHz @ 1.44V
Northbridge: 3100MHz @ 1.35V
RAM: 1652MHz
HT speed is somewhere at 2170MHz I think.

That's a real nice chip. I'm jealous. Mine had to take 1.48 - 1.5v to hit 4 ghz.
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post #4653 of 5036
Thanks for the help guys! I failed the 4Ghz attempt and couldn't post with settings as shown below:





I'm surprised to see my CPU manual voltage higher then Atomfix 4Ghz OC. I think I did an auto tune + increasing FSB to get my current 3.75Ghz OC to get the 1.464V

Whats the difference between the CPU/NB manual voltage and the lower NB voltage? The lower value NB voltage maxes out at 1.25. I assume this is the same value Atomfix raised to 1.35V...does this mean my mobo cant handle it or should I be adjusting the top CPU/NB voltage?
post #4654 of 5036
No, when we say increase NB voltage we actually mean CPU/NB voltage.

CPU/NB voltage is for the northbridge between the CPU and memory which is what the speed pertains to.

The NB voltage at the bottom is for the chipset. It does need more voltage... keep at auto.


With NB at just 2400, I would just try 1.3v at most.

NB at 3000 usually need 1.35v or more.


Also... what board are you using again? Do you have a lot of airflow over the VRM's? AMD boards like VRM's that are cool. The hotter they get, the more unstable the board becomes basically. A lot of guys have been putting a spot fan over it.
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post #4655 of 5036
Yea, it became clear after I read over everything again. Thanks, I'll re-adjust and test.

ASUS M5A97 Rev 1. I've got 4x 120mm fans: Side, top, rear and front HDD. Plus the 2x 120mm Noctua fans.

Not sure where the VRMs are but I'd guess its the heatsink near the CPU. The Noctua is covering it with the fans/heatsink...so hopefully it still has good enough airflow
Edited by chrischris - 3/12/13 at 1:51pm
post #4656 of 5036
Yeah it's the heatsink next to the cpu area. Touch the heatsink and see how warm it is. Just to eliminate the possibility.

But otherwise moving on... did you try CPU/NB at 1.3v? 1.25v appears to be stock for you.
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post #4657 of 5036
I had no success with:

FSB: 286
CPU: 4004 Mhz @1.464V all the way up to 1.49V
CPU/NB: 2574Mhz @ 1.25V all the way up to 1.3V
HT Speed: 2002Mhz
RAM 1524Mhz @ 1.5V stock

EDIT: After saving and letting the mobo reset, screen stays black. Hard reboot says Overclock failed and reverts back to defaults. PSU is a Corsair TX650 so shouldn't be a power restriction.

Currently, I'm running a stable:
FSB: 265
CPU: 3710Mhz @ 1.464V
CPU/NB 2385 @ 1.175V
HT Speed: 2120Mhz
RAM: 1412Mhz @ 1.5V stock

I cant figure out why the 4Ghz setup wont boot. Maybe its the mobo...

EDIT: I'll take this to a different thread...I realized I shouldn't be hijacking this with my personal problems tongue.gif
Edited by chrischris - 3/12/13 at 3:32pm
post #4658 of 5036
Hehe, yeah, usually you'll get a wider variety of help when you open your own thread. One thing I'd try is go back to the settings you had at 286 FSB and just drop multiplier by 1. It could be that your board don't like FSB that high.
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post #4659 of 5036
Quote:
Originally Posted by chrischris View Post

I had no success with:

FSB: 286
CPU: 4004 Mhz @1.464V all the way up to 1.49V
CPU/NB: 2574Mhz @ 1.25V all the way up to 1.3V
HT Speed: 2002Mhz
RAM 1524Mhz @ 1.5V stock

EDIT: After saving and letting the mobo reset, screen stays black. Hard reboot says Overclock failed and reverts back to defaults. PSU is a Corsair TX650 so shouldn't be a power restriction.

Currently, I'm running a stable:
FSB: 265
CPU: 3710Mhz @ 1.464V
CPU/NB 2385 @ 1.175V
HT Speed: 2120Mhz
RAM: 1412Mhz @ 1.5V stock

I cant figure out why the 4Ghz setup wont boot. Maybe its the mobo...

EDIT: I'll take this to a different thread...I realized I shouldn't be hijacking this with my personal problems tongue.gif

Put the CPU voltage to 1.45V and CPU-NB voltage to 1.35V and return the Chipset NB voltage to 1.1V

Bump up your RAM Voltage to 1.55V and put your FSB to 300, Loosen up your memory timings also, run them at 9-9-9-25-30 to see if it will boot, then fine tune it.
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post #4660 of 5036
Quote:
Originally Posted by Atomfix View Post

Put the CPU voltage to 1.45V and CPU-NB voltage to 1.35V and return the Chipset NB voltage to 1.1V

Bump up your RAM Voltage to 1.55V and put your FSB to 300, Loosen up your memory timings also, run them at 9-9-9-25-30 to see if it will boot, then fine tune it.

Have you tried doing this, chrischris?
If yes, any success?
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