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Overclocking 980x - Page 2

post #11 of 52
Thread Starter 
Do these voltages look normal?

CPU: 1.35
QPI: 1.3
IOH: 1.2
ICH: 1.2
DRAM: 1.64
PLL: 1.88

I don't want to go too high, do those all look okay? I am at 4.2GHz with my CPU right now and I'm trying to get my RAM up to 2000MHz.

I don't see anywhere to reduce my QPI/NB frequency without lowering my bus?
post #12 of 52
Quote:
Originally Posted by xyeLz View Post
Do these voltages look normal?

CPU: 1.35
QPI: 1.3
IOH: 1.2
ICH: 1.2
DRAM: 1.64
PLL: 1.88

I don't want to go too high, do those all look okay? I am at 4.2GHz with my CPU right now and I'm trying to get my RAM up to 2000MHz.

I don't see anywhere to reduce my QPI/NB frequency without lowering my bus?
You can gain better stability with PLL: @ 1.3-1.5v instead of 1.88v with Gulftown chips.

I have mine @ 1.4v
    
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post #13 of 52
Thread Starter 
Quote:
Originally Posted by MrTOOSHORT View Post
You can gain better stability with PLL: @ 1.3-1.5v instead of 1.88v with Gulftown chips.

I have mine @ 1.4v
I find that odd since at auto it was at 1.812. Weird.

For some reason IntelBurnTest said I was not stable at 4.4GHz at 200MHz bus and I am stable at 133MHz bus with 4.4GHz. How do I fix that? And how do I change my NB/QPI speeds without changing the bus speed?
post #14 of 52
Thread Starter 
Right now the only thing I have overclocked is the CPU:

4.4GHz at 1.35v, 133MHz at 32x multiplier.

I had the RAM stable at 1866MHz at DRAM 1.64v/QPI at 1.35. I tried to push it up to 2133 at 1.375 and it booted up to before the Windows loading screen and then just nothing happened. It was stuck.

Ideally I want to get my RAM to 2200MHz at possibly 8-8-8-24. Is that safe without RAM cooling?
post #15 of 52
Thread Starter 
My current bus speed is 200MHz and stable at 4.4GHz (22x). I set my uncore at 3.2GHz and QPI link is currently at 3.6. THE ONLY VOLTAGES I HAVE SET ARE CPU AT 1.35 AND DRAM AT 1.6 (for now). If I change the other voltages in the BIOS to slightly higher than what they are at when I am in the BIOS, BurnTest will tell me I'm unstable. Why? Wth?

My RAM is currently at 1603MHz. I can't for the life of me figure out how to boot up at 2005MHz. Can anyone help me here? I tried increasing DRAM voltage to 1.65 along with QPIv to 1.35. Nothing. My computer "false boots" and then my monitor never comes back on. I shut the computer off, turn it back on, and it says FAILED OVERCLOCK, ENTER SETUP F1.

I originally wanted 4.4GHz at 2200MHz RAM but with 200MHz BCLK I guess that's not gonna happen. Is a 220 BCLK safe or should I stay away from that?

Any help would be greatly appreciated. I'll pay you for your help!
Edited by xyeLz - 2/22/11 at 11:12pm
post #16 of 52
http://www.overclock.net/intel-cpus/...920-930-a.html
BCLK – Base Clock - This clock controls your memory speed, qpi speed, and core speed based on whatever multiples for those settings you have. It's the most important part of overclocking the Core i7. It's stock setting is 133

Uncore – This is basically the speed of everything which isn't your core (i.e. l3 cache, imc, etc). It should be 2x your memory speed but allows for multipliers higher than 2x as well. Stability will be greatest at 2x.

QPI – Quickpath interconnect - It's basically the intel equivalent of AMD's hypertransport. It's how the CPU and the x58 chipset communicate. It has multipliers of 18x, 22x, and 24x. The 920 should be left at 18x creating a 9:8 ratio between the uncore and the memory multiplier assuming you use the 8x ratio, which some claim offers the greatest stability. Although people have been able to run it at all sorts of ratios.

Memory - Memory is calculated based on either a 6x,8x,10x, 12x, or 14x of your base clock. I recommend 6x and 8x. Depending on your mobo bios it may be called ratio or multiplier.
Edited by H969 - 2/23/11 at 4:23am
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post #17 of 52
The Gulftown Uncore is not in fact supposed to be 2x. You're looking at 1.5x for the 980X so be aware of that.

You must have a good chip because I was needing close to 1.4 vcore for 4.4 @ 133x33. I subsequently had a stable platform but my folding was generating client errors so I had to peal it back a bit.

I think most will agree that the intels seem to like the odd multipliers vs the even. I have experienced that and seen it mentioned in here a number of times.

Careful with the PLL numbers- I've seen CPU and QPI PLLs... the 1.8 is CPU PLL, while the PLL mentioned later looks like a QPI PLL. If your mobo is like mine I can't drop my CPUPLL down past 1.8 anyway.

Your IOH looks okay but with SLI 580s you might need a bit more in there- I think standard is 1.15 for your 2 cards... not sure how hungry your 580s are but if you run into troubles it's something that may need a peek.

I favoured a multiplier OC environment because I spent a 1000 bucks on an unlocked processor. If you're not planning on doing any mad RAM OC then maybe you'd consider going back to the multiplier and gaining stability there. Just a thought- at least until you learn your way around the bios and dial in some of your additional settings. Once you've had a chance to get familiar, then start to dabble with bclock OCing and tightening RAM timings to accommodate a dropping RAM frequency.
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post #18 of 52
Thread Starter 
Okay so here's what I did.

CPU: 4.4GHz @ 1.35v @ 200BCLK x 22
DRAM: ~1600MHz
---
NB: 3.0GHz
QPI Link: 3.6GHz

CPU: 1.35
DRAM: 1.6
QPI/DRAM: 1.35
PLL: 1.82
IOH: 1.20
ICH: 1.11
IOH PCIE: 1.51
ICH PCIE: 1.51

Stable at this point. Now, I want to try to boost my RAM up to 2000MHz. What will I have to adjust in order to do that?

From what I read, the following applies to the listed. Could someone please help me clarify?

CPU = CPU
DRAM = RAM
QPI/DRAM = ? RAM ?
PLL = ?
IOH = NB
ICH = SB
IOH PCIE = ?
ICH PCIE = ?

Should I try to boost up my NB frequency as high as I can on 1.2v IOH?
How do I adjust my QPI link? Does the QPI voltage function affect that? If so, should I try to boost up my QPI link as high as possible?
Edited by xyeLz - 2/23/11 at 11:14am
post #19 of 52
What are the stock timings for the memory & are you using them?
With 12Gb of ram installed you may need to bump up the qpi/vtt a bit more for stability.
    
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post #20 of 52
Thread Starter 
Quote:
Originally Posted by FtW 420 View Post
What are the stock timings for the memory & are you using them?
With 12Gb of ram installed you may need to bump up the qpi/vtt a bit more for stability.
According to Newegg, the RAM is designed to run at 2000MHz, 9-10-9-27 iirc. When I originally booted up, it was running at somewhere around ~1000MHz, 7-7-7-20 iirc?

It's the Corsair Dominator GT 3x4GB kit from Newegg: http://www.newegg.com/Product/Produc...-329-_-Product
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