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Q9300 Overclocking help

post #1 of 24
Thread Starter 
Hey guys, I just picked up the NH-D14 per your recommendation and I love the thing. Its been surprisingly quiet, cooler than my CNPS9300 and it was a breeze to install. Now I'm having issues overclocking though and I thought I'd enlist your professional opinion again.

I'm a bit of a newb at overclocking so please, bear with me!

My setup is...

CPU: Q9300 3.1 ghz OC
Mobo: P5P43TD/USB3
Memory: 8GB G.Skill DDR3-1333
GPU: XFX 5870
OS: Windows 7 64 Bit

I've managed to push it to 3.1 ghz by pushing the FSB to 413, when I push it to 423 to get 3.2 ghz, I can't post and it says "Overclock failed" and tells me to either change my settings or reset my bios. I set it back to 413 and its fine. I run at 51 degrees celsius on RealTemp on 100% load so I think I can push it farther, just not sure how.

I'm guessing its something to do with voltages, but I'm terrified of touching it. If that is the issue, can anyone walk me through the process? I've been googling left and right, but its been information overload and the process seems daunting.

Thanks!
Edited by dare365 - 3/22/11 at 7:58am
post #2 of 24
Can you post what your current volts are?

I'd guess upping Vcore to 1.35, CPU FSB to 1.4, and your NB voltage to 1.4 would allow you to up your FSB a little further.
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post #3 of 24
if memory serves me correctly, a lot of the 775 boards back in the day, suffered from "FSB black holes", where they just wouldn't post between a certain range.

i had a p35 board (it was a gigabyte, the exact model number eludes me atm), but it had a fsb black hole between 410 to 422...try going for 3.3 ghz see if that post?
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post #4 of 24
Thread Starter 
Quote:
Originally Posted by XCRapid View Post
Can you post what your current volts are?

I'd guess upping Vcore to 1.35, CPU FSB to 1.4, and your NB voltage to 1.4 would allow you to up your FSB a little further.
I'm really not sure, how would I check? I know its set to auto in my BIOS. Sorry, I'm a giant newb. =/

Quote:
Originally Posted by transhour View Post
if memory serves me correctly, a lot of the 775 boards back in the day, suffered from "FSB black holes", where they just wouldn't post between a certain range.

i had a p35 board (it was a gigabyte, the exact model number eludes me atm), but it had a fsb black hole between 410 to 422...try going for 3.3 ghz see if that post?
I just gave it a shot, same problem at 423, 433, and 443.

I did however notice when I set it back to 413 that post was saying my memory was DDR3-867 when it usually says DDR3-1333. Maybe thats the issue? My knowledge of overclocking doesn't really exceed beyond enabling/disabling some settings and changing FSB, so I'm really not sure.
Edited by dare365 - 3/21/11 at 7:58am
post #5 of 24
Quote:
Originally Posted by dare365 View Post
I'm really not sure, how would I check? I know its set to auto in my BIOS. Sorry, I'm a giant newb. =/



I just gave it a shot, same problem at 423, 433, and 443.

I did however notice when I set it back to 413 that my Memory was saying it was DDR3-867 when it usually says DDR3-1333. Maybe thats the issue? My knowledge of overclocking doesn't really exceed beyond enabling/disabling some settings and changing FSB, so I'm really not sure.
okay just thought i mentioned it, as they can exist

as for your ram, core2 motherboards used what is called a "divider", since the cpu, fsb and ram are all generated from the same clock, OC'ing messes with that clock, so to get higher OC's, you have to mess with the ram divider.

it will be in your bios, in the ram section, it will allow you to adjust the "speed" of the ram.

it will say something like:
533
667
800
etc..

it will be obvious once you see it (been awhile since i oc'ed a core2 )

edit: i honestly want to say it might be called "strapping", and its not a "divider" in core2, its a multiplier (amd has a "divider" )
Edited by Transhour - 3/21/11 at 8:09am
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post #6 of 24
Thread Starter 
Quote:
Originally Posted by transhour View Post
okay just thought i mentioned it, as they can exist

as for your ram, core2 motherboards used what is called a "divider", since the cpu, fsb and ram are all generated from the same clock, OC'ing messes with that clock, so to get higher OC's, you have to mess with the ram divider.

it will be in your bios, in the ram section, it will allow you to adjust the "speed" of the ram.

it will say something like:
533
667
800
etc..

it will be obvious once you see it (been awhile since i oc'ed a core2 )
Oh I see. I don't see 1333 in the list though, 1373 seems to be the closest thing. Is that "close enough" or should I settle for whatever option is below that?
post #7 of 24
Quote:
Originally Posted by dare365 View Post
Oh I see. I don't see 1333 in the list though, 1373 seems to be the closest thing. Is that "close enough" or should I settle for whatever option is below that?
you should be able to get "away" with using the 1373 "strapping", but might want to bump up the memory voltages a notch, as 8 GB's is a lot, and that is a lot of "stress" on the nb and fsb...i myself, would keep the memory voltage the same, and choose a lower multiplier, so choosing something lower than the "1373".

these core2's loved 1:1 ratios (fsb:ram) and tighter memory timings, over higher ram speeds...
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post #8 of 24
Thread Starter 
Ok, so I did a few things just now. I gave the next lowest option under 1373 a try and I didn't post. Same exact problem as when I set my FSB to anything higher than 413. Then I decided to see how high I could get it and I tried DDR3-992, which was the second lowest option. It posted but then I BSOD'd.

So I suppose FSB at 413 and DDR3-827 is as high as I'm going to get with it remaining stable but am I taking a bigger hit with my memory at DDR-827 or with my CPU at stock speed at 2.5 ghz?
post #9 of 24
sounds like you need to increase the voltage to the northbridge (might be called vtt or nbt), and to ram, give them a few notch bumps up.
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post #10 of 24
Thread Starter 
I changed VTT Over Voltage from 1.2000V to 1.21250V, an increment of two and still no luck. =/

Just to clarify, these are the rest of my settings in "AI Tweaker."

Ai Overclock Tuner [Manual]
CPU Ratio Setting [Auto]
FSB Frequency [413]
PCIE Frequency [100]
FSB Strap to North Bridge [Auto]
DRAM Frequency [DDR3-827MHz]
DRAM CLK Skew on Channel A1/A2/B1/B2 [Auto]
DRAM Timeing Control [Auto]

DRAM Static Read Control [disabled]
DRAM Dynamic Write Control [Auto]
DRAM Read Training [Auto]
DRAM Write Training [Auto]
Mem OC Charger [Auto]
AI Clock Twister [Auto]
Ai Transaction Booster [Auto]

Auto PSI [Enabled]
SB Voltage [Auto]
Memory Over Voltage [Auto]
Chipset Over Voltage [Auto]
VTT Over Voltage [1.21250] *Just changed from Auto*
CPU VCORE Over-Voltage [Auto]
CPU Spread Spectrum [Disabled]
CPU Clock Skew [Auto]
NB Clock Skew [Auto]
CPU Margin Enhancement [Optimized]
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