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Help With LGA775 QX9650 4.0GHz Stable Overclock

post #1 of 29
Thread Starter 
Howdy fellow OCN'ers.

I've had my QX9650 at 3.8GHz for a while now, but it's not stable. It will run all day every day with anywhere up to medium loads, but when I push heavy loads on it, I occasionally get the x124 stop code (maybe once a week with daily gaming), so I'd like a little help getting it stable, and pushing it to 4.0GHz if possible. I really want my FSB at 400MHz, so my RAM can run at its factory 1600MHz, and leaving the multiplier at 10 will give me a nice even 4.0GHz.

My understanding of overclocking (which I've gathered from here mostly) is pretty basic.

X48 platform on a Foxconn BlackOps board (all details in sig rig), QX9650, 8GB 1600MHz DDR3 (4x2GB).

Here are some screenshots of the overclocking portion of the BIOS.



Main screen. Not sure why it says multiplier is 9x, but is clearly reflected at 10x.



CPU Feature screen. The only thing I touched is to unlock the multiplier, since I have an Extreme series CPU.



Memory Timing Config screen. I tried to mimic the stock timings that my RAM indicates, but I wasn't sure if overclocking the FSB from its stock 333 to (hopefully) 400 would require any of these to loosen.



Second half of the RAM screen.



First half of the All Voltage Control screen. The only ones I've touched are the CPU Voltage Setting and NB Voltage Setting, as I have no idea what the rest of them are.



Second half of All Voltage Control screen. I bumped up the RAM voltage, but I'm still not sure if it was required. My RAM is said to run at 1600MHz at 1.5V, but again, I wasn't sure whether overclocking FSB would require RAM voltage to bump up as well.



OC Storage menu. I don't think there's anything important in here, but you never know.



Overall board information. I've looked a few times, and this is the most recent BIOS available for my board.


If you have any quick tips, please shoot them my way. Don't feel like you have to spend 30 minutes typing up an elaborate reply or anything, I'm just hoping that the gurus here will notice something easily that my noobish brain overlooked. thumb.gif
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post #2 of 29
What voltage does CPU-Z report when your CPU is loaded with Prime95?

Lack of voltage is usually what holds these CPUs back so don't be cheap with the volts. You might just need to Enable the vdroop compensation bios option to take care of this problem. That prevents the voltage from dropping significantly when you start loading your CPU.
post #3 of 29
Thread Starter 
Quote:
Originally Posted by unclewebb View Post

What voltage does CPU-Z report when your CPU is loaded with Prime95?

Lack of voltage is usually what holds these CPUs back so don't be cheap with the volts. You might just need to Enable the vdroop compensation bios option to take care of this problem. That prevents the voltage from dropping significantly when you start loading your CPU.

I don't think CPU-Z reads my board correctly. It says (with or without Prime95 load) that my Core Voltage is 1.47V, the same as my NB setting in the BIOS. Speedfan reports VCore 0.90, but it drops to 0.86 under Prime95 load.
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post #4 of 29
Thread Starter 
Here are some screenshots of CPU-Z, CoreTemp, and Speedfan all running with Prime95 idle and load.

IDLE




LOAD

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post #5 of 29
Open Hardware Monitor
http://openhardwaremonitor.org/

AIDA64
http://www.aida64.com/

Try some other software to confirm your actual voltage when in Windows and the CPU is loaded. Your bios is showing a lot of voltage drop so that might be holding you back.
post #6 of 29
Thread Starter 
Quote:
Originally Posted by unclewebb View Post

Open Hardware Monitor
http://openhardwaremonitor.org/

AIDA64
http://www.aida64.com/

Try some other software to confirm your actual voltage when in Windows and the CPU is loaded. Your bios is showing a lot of voltage drop so that might be holding you back.

OK now I'm kind of worried. Openhardwaremonitor says my CPU voltage is 0.904 at idle, and drops to 0.864 or 0.872 under load. 0.04 sounds about right for the VDroop, but there's no way my CPU could possibly work with an 800MHz overclock at 0.9V, is there??

That has to be a faulty reading, doesn't it?
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post #7 of 29
I am pretty sure that most programs are not reading your CPU voltage correctly.

It is hard to see your pictures after overclock.net has resized them. What bus speed and multi are you running?

I also have a QX9650. I leave it at the default bus speed and then I just adjust the multiplier. At about 1.35 volts it runs reliably at 3666 MHz. It's an older P965 board that was never very happy overclocking Quads. With more voltage I am sure it could go a little higher but I decided to take it easy on this CPU. My 3570K is the one that gets the abuse now. smile.gif
post #8 of 29
Thread Starter 
Quote:
Originally Posted by unclewebb View Post

I am pretty sure that most programs are not reading your CPU voltage correctly.

It is hard to see your pictures after overclock.net has resized them. What bus speed and multi are you running?

I also have a QX9650. I leave it at the default bus speed and then I just adjust the multiplier. At about 1.35 volts it runs reliably at 3666 MHz. It's an older P965 board that was never very happy overclocking Quads. With more voltage I am sure it could go a little higher but I decided to take it easy on this CPU. My 3570K is the one that gets the abuse now. smile.gif

Yeah, I'm not a fan of the image preview thing that pops up when you click the image. If you right-click them and open in a new tab, you can see the full-size versions.

My QX9650 I could get up to 3500MHz by turning all OC settings off except the multiplier (333MHz * 10.5).

My current bus speed and multi are 380MHz * 10 (BIOS says 9, but I think it's a glitch, since it's set to 10 and all programs confirm it).

EDIT: Just checked PC Health screen of BIOS, and it showed CPU voltage of 1.31, which is at least close to what is set in BIOS, so it looks like every single monitoring program reads my VCore wrong. Awesome.
Edited by DrBrogbo - 5/16/13 at 4:34pm
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post #9 of 29
Your bios screen shot showed CPU Current Voltage at 1.2230 which is too low for 4000 MHz. Try enabling that vdroop setting I mentioned.

On my old board, changing the bus speed also changes the memory speed which can make it more difficult when overclocking. Easier to only change one thing at a time.

This program lets you adjust the multiplier higher when in Windows.

ThrottleStop 5.00
http://www.techinferno.com/downloads/
Edited by unclewebb - 5/16/13 at 5:00pm
post #10 of 29
Thread Starter 
Quote:
Originally Posted by unclewebb View Post

Your bios screen shot showed CPU Current Voltage at 1.2230 which is too low for 4000 MHz. Try enabling that vdroop setting I mentioned.

On my old board, changing the bus speed also changes the memory speed which can make it more difficult when overclocking. Easier to only change one thing at a time.

This program lets you adjust the multiplier higher when in Windows.

ThrottleStop 5.00
http://www.techinferno.com/downloads/

I think it only showed that low because I hadn't applied those overclock settings and booted into Windows yet (I had just restored them from OC Gear).

Normally it shows 1.30V in the current voltage part of the BIOS screen (where it showed 1.22V before). I did enable VDroop compensation though.

I wasn't too worried about changing the bus speed, since my RAM is supposed to run at 1600MHz at 1.5V (it won't get up to that speed until I hit 400MHz FSB), and I didn't think I'd have any issues until I passed that threshold. I could certainly be wrong though.
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Hard DriveCoolingOSMonitor
Sandisk Extreme 120GB SSD Cooler Master Hyper 212 Plus Windows 7 x64 Professional Hanns-G 27" 1920x1200 
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