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Help with overclocking.

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June 27, 2010 9:08:46 PM

I just built a new system using the i7-930 and the asrock x58 extreme. I have the i7 cooled by a h50 and so far have it overclocked to 3.8ghz... and... well it boots and such. I haven't ran a stress test yet... but I did play wow lol... it didn't really do much to it... Only about 6% usage. I'm sitting at 48C in windows atm... Should I be worried or do I have room to push it to 4.0? I did run a portion of the prime95 test and it got to 68C at one point at 3.7...

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June 27, 2010 9:14:36 PM

I'm doing some default OC options in the bios. I just had a drop down menu that said 3.8 ghz and i hit it and it changed everything for me. the voltage is at 1.344 atm. multiplier is x 20.0 and bus is 190.0 mhz... anything seem wrong? If you can't tell, i'm new to this lol.
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June 27, 2010 9:52:08 PM

Hey Mike,

Try to run Prime95 for an hour or something and report temps. Even an hour won't tell if it's COMPLETELY stable, but if it can pass that without errors, there's a damn good chance it is.

48C for idle is a bit high, but 68C at load is totally fine. I'd say try to stay under 75C.

At first glance... voltage looks way to high for your speed. Try lowering the voltage to at LEAST 1.3v -- A lot of 930's run 4.0Ghz at around 1.25v.

Check this guy's settings out, they're a good start if you want to do it manually: http://www.tomshardware.com/forum/260117-29-asus-p6x58d...
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June 27, 2010 10:00:29 PM

Thanks for the reply. I lowered the voltage to 1.26 and am running prime95 as we speak.
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June 27, 2010 10:11:11 PM

It got to 73C within 15 minuts... I went a head and stopped it lol.

When will I actually encounter stress on the processor like this in games?
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June 27, 2010 10:23:13 PM

73C is still acceptable.
If it's running stable, keep lowering it a notch or 2 at a time now til it isn't... lower voltages = lower temps.

You will never reach temps that a stress test gives you in games, so you don't have to worry there.
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June 28, 2010 1:46:32 AM

alright, i've got it down to 1.24... think I can push it to 4.0 with that? i'm at 3.8 and it appears stable.
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June 28, 2010 2:09:42 AM

hmm I ran prime 95 and the last 2 tests had errors almost off the bat... i'm not sure how to check them though.
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June 28, 2010 4:55:51 AM

If 1.24v is the lowest it will go with 3.8, you'll prob have to raise it to hit 4.0. Once you get around 4.0, it starts to need more voltage for less of a frequency gain. It gets power hungry... so it's up to you how far you wanna go.

Just try it though.

If you up the vcore after errors, does it fix it then?

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June 28, 2010 11:10:44 AM

at this point, voltage is at 1.34... and 4.0Ghz. It seems stable... kind of. I've been through many blue screens to get to this point lol... idk if thats good or not. but yeah... when I try Prime95... it crashes... at least just the program is crashing and not the computer. Should I bump the voltage or back off the clocks?
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June 28, 2010 11:05:20 PM

m1ke1991 said:
at this point, voltage is at 1.34... and 4.0Ghz. It seems stable... kind of. I've been through many blue screens to get to this point lol... idk if thats good or not. but yeah... when I try Prime95... it crashes... at least just the program is crashing and not the computer. Should I bump the voltage or back off the clocks?


I don't think any more voltage will give you results... that's much higher than what should be needed at 4.0.

What about your memory? All of the settings at auto?
Did you change anything like QPI/VTT/etc?
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June 29, 2010 7:15:21 PM

I set it at 4.0 then just started bumping the voltage till everything stopped crashing. After that post I bumped it one more time to 1.35... and now prime95 actually runs a few minutes without a crash and all that. Everything appears to be running smooth. I never changed any memory settings unless the overclocking settings I used did automatically.

BUT it does get really hot fairly quick... I figured I would hardly ever encounter 100% usage or close to it... so maybe i'm safe? lol
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June 29, 2010 7:36:18 PM

When you're in your BIOS (Or in CPU-Z, Memory tab) check out your memory frequency (ie: 1600MHz/1333MHz... whatever it is)

When you increase BCLK, it gets multiplied by your memory multiplier. So, say your BLCK is 190, then your memory will be running at 1520 with a 8x mult or 1900 with a 10x mult.

If it's higher than your memory is rated at, it causes crashes.
Run the top setting in Prime95 (small FFT) and see if it crashes. If it passes, it's probably your memory.
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June 29, 2010 7:43:09 PM

DRAM Frequency says 600.5 mhz lol. my ram is suppose to be 2000 so idk what thats about.
NB Frequency is 3202.7 mhz.
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June 29, 2010 7:48:20 PM

CPU frequency is 200, the ratio is 20.0. Maybe I should start checking my ram now lol

ram voltage is 1.654.
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June 29, 2010 7:55:25 PM

Hmm... well go into your BIOS, and change your memory multiplier to 10x. It's at 6x or something. Although, I don't think this is causing the stability issue.

Also... some people say i7's don't like even multipliers for the CPU, so try changing your BCLK to 181 and your CPU multiplier to 21x if you still want 3.8.

Otherwise... you can start fresh and I'll give you all of my settings, you can try that out. I'm running at 4.0, btw.
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June 29, 2010 8:17:40 PM

m1ke1991 said:
CPU frequency is 200, the ratio is 20.0. Maybe I should start checking my ram now lol

ram voltage is 1.654.


Oh, what? you're already at 4.0?
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June 29, 2010 8:42:58 PM

Yeah, actually I just reset my BIOS cause It black screened on me. lol. I'm back down at 2.8... Maybe I should try manually doing everything. The setting is just a drop down menu in the BIOS that gives me a list of speeds... starting with 3.6 then going to 3.8, 3.9, 4.0, 4.2... and it automatically does all the other settings for me... I just don't know if I trust those settings lol. It seemed like it decreased my ram speed a lot... Idk if my ram is just running at a lower speed or what. I'm not exactally sure which frequency I should be looking at. lol
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June 29, 2010 8:50:01 PM

m1ke1991 said:
Yeah, actually I just reset my BIOS cause It black screened on me. lol. I'm back down at 2.8... Maybe I should try manually doing everything. The setting is just a drop down menu in the BIOS that gives me a list of speeds... starting with 3.6 then going to 3.8, 3.9, 4.0, 4.2... and it automatically does all the other settings for me... I just don't know if I trust those settings lol. It seemed like it decreased my ram speed a lot... Idk if my ram is just running at a lower speed or what. I'm not exactally sure which frequency I should be looking at. lol


Haha.. okay. Well, I will post my settings once I get home @ 11pm (I'm at work on my laptop, I can't remember exact decimals.) and you can try them or not.

There's really not too many things you'll have to change, but it's rock solid.

EDIT: Btw, when your memory says it's running at 600MHz, its actually 1200MHz. DDR = Double Data Rate =]
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June 29, 2010 9:38:32 PM

I don't know is seeing another i7 OC profile helps, but here is my OC profile for an i920 at 4.0GHz using a an ASUS P6T MOBO and 1600MHz RAM. This has been extremely stable now for over 6 months and solid under stress tests; CPUs vary but I'd have to believe the i930 isn't too different from an i920 when it comes to overclocking - your mileage may vary:

OVERCLOCKING PROFILE (extremely stable for a several months now)

Overclock Mode: XMP
CPU Ratio Setting: Auto
SpeedStep: Disabled (set to enable after you prove stable if you want it to auto throttle/save power..)
Turbo Mode: Disabled
BCLK: 200
PCIE: 100
DRAM Frequency: 1600
UCLK Frequency: 3200
QPI Link Data Rate: Auto
DRAM CAS# Latency: Set automatically in XMP mode
DRAM RAS# to CAS#l: Set automatically in XMP mode
DRAM RAS# PRE time: Set automatically in XMP mode
DRAM RAS# ACT Time: Set automatically in XMP mode
DRAM REF Cycle Time: Set automatically in XMP mode
CPU Voltage: 1.28125v
CPU PLL Voltage: Auto
QPI/DRAM Core: 1.3.0v
IOH Voltage: Auto
IOH PCI Voltage: Auto
ICH Voltage: Auto
ICH PCIE Voltage: Auto
DRAM Bus Voltage: 1.62v
Load Line Calibration: Enabled (for stability)
CPU Differential Amp: Auto
CPU Clock Skew: Auto
CPU Spread Spectrum: Auto
IOH Clock Skew: Auto
PCIE Spread Spectrum: Disabled (for stability)
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June 30, 2010 3:08:34 AM

alright, thanks for the posts. I'll try all of these things lol. when you overclock your processor... your ram lowers its speed right? so once I reach my desired CPU speed... do I have to bump the ram back up slowly? I'm just wanting the ram to run at the factory clocks, which is 2000 mhz. I'm not really looking to overclock it I don't think lol.
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June 30, 2010 4:54:42 AM

mike, the BCLK decides what your ram runs at... so if your BCLK was 190, you could either set your memory multiplier to 8x or 10x depending on what memory you have.

190 x 8 = 1520MHz
190 x 10 = 1900MHz

Here's my settings:

Frequency-------4011 MHz
vDroop-----------Disabled
BCLK--------------191
CPU Multiplier---21
vCore-------------1.2v
CPU PLL----------1.85v
Hyper-Threading Enabled

This is all I changed, some recommended 1.875v for the PLL, but 1.85v works well for me.

I have 1600MHz (9-9-9-24) rated RAM running at 1520MHz (8-8-8-21) for reference.

EDIT: OH, and that guide iqvl posted IS pretty good actually.
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June 30, 2010 5:13:10 AM

I'm reading through that guide as we speak. seems pretty informative. Btw, what is the difference in NB frequency and DDR? you explained DDR earlier, but what is NB?
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June 30, 2010 5:15:47 AM

Northbridge. I think IOH voltage has to deal with the northbridge now, but I'm not sure.
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June 30, 2010 5:18:32 AM

It seems to be a lot higher, is that a speed I should target increasing?
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June 30, 2010 5:26:20 AM

Northbridge is incorporated into something else (IOH I think) for i7's, I don't know much about it.

My IOH is at 1.125v just so ya know... don't remember if this is default or not. I would think not, since its not on auto.
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June 30, 2010 5:58:56 AM

Hmm, i'm back at it... trying to overclock that is. Its getting pretty warm at 3.6 GHz... it just hit 73C under load after 10 minutes of prime95. I reseated my h50 and it didn't really seem to help. I was running stable at 4.0... not under load but just general system use lol. If I had it under load at 4.0 it would actually overheat before it crashed... so I guess thats kind of good. I'm tempted to just sit it at 4.0 and be happy... Cause i'm never going to use 100% of this processor. I don't think O_o
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June 30, 2010 6:10:19 AM

Alright... I bumped the DRAM frequency to 900... I tried for 1080 but it black screened on me and I had to reset the bios. Is there a way I can make it possible to reach 1080 without it melting down on me?
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June 30, 2010 6:10:31 AM

what voltage are you at for 4.0?
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June 30, 2010 6:11:46 AM

lol mike, what ram do you have? unless you have 2000MHz ram, you can't have it at 1080. lower your memory multiplier to 8x
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June 30, 2010 7:03:26 AM

does the blue screen after prime95 mean too much power or not enough? lol.
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June 30, 2010 7:56:55 AM

Oh, nice memory.

If you can't hit 4.0 with 1.35, I'd think either something else is the issue, or you'll never hit 4.0.

Maybe I'm wrong.. I know many people say don't go higher than 1.375 though.
Try different tests in Prime95 to narrow it down. (small FFTs, large FFTs, blend)

Oh and usually if you get a bluescreen related to voltage it's not enough. I have seen people find better stability at lower voltages though.
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June 30, 2010 3:51:22 PM

heh, i'm at 1.4... I'm not sure thats a great idea though. It failed tests pretty quickly in prime95 then bluescreened at lower voltages though. I think i'll just try inching it down and see where I get ... if all else fails i'll just settle for 3.9 lol.
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June 30, 2010 3:52:36 PM

thanks though. btw, is there any way I can change the timings for the memory? I figured I should just leave the memory alone but if i can make it faster... >_>
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June 30, 2010 6:23:42 PM

Yes, you can change your timings, it's different for your mobo, but it's under memory control or similar.

I wouldn't start messing with the timings until your CPU is 100% stable, it'll just introduce more issues.
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June 30, 2010 8:18:20 PM

yeah that sounds like a plan. I don't think i'll ever get this thing stable at 4.0 lol. unless I get better cooling that is. Its stable until its put under 100% load... then it will overheat pretty quick. I'm trying to back the voltage down... But i'm not sure I can actually do that and keep it somewhat stable. I've read some people are giving their i7 1.4 around the 4.0 mark... but is that way too much? will it fry my processor within a year?
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June 30, 2010 8:57:22 PM

m1ke1991 said:
yeah that sounds like a plan. I don't think i'll ever get this thing stable at 4.0 lol. unless I get better cooling that is. Its stable until its put under 100% load... then it will overheat pretty quick. I'm trying to back the voltage down... But i'm not sure I can actually do that and keep it somewhat stable. I've read some people are giving their i7 1.4 around the 4.0 mark... but is that way too much? will it fry my processor within a year?


Depends on your temps... if you're running it with 1.4v and its still at 75C for max load, you might be fine. You have to ask yourself if the 100MHz increase is worth the risk. Honestly, you won't even really notice a difference from 3.6 to 4.0 unless you're doing heavy lifting. Benchmarking will let you know the difference.

You have a better cooler than I do, so 4.0 shouldn't be an issue at all as far as cooling goes. It must either be your chip, mobo, or you have been missing some setting, I dunno... so many things it could be. =/
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June 30, 2010 9:24:50 PM

heh, my system cut off when it hit 69C on the last test. Which I don't understand... Maybe it was just getting hot too fast. Last night I got to 75C then it cut its self off. I've got it backed down to 3.8 right now with 1.28v... If I can last 5 minutes in prime with this I may just keep it and settle.
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June 30, 2010 10:30:00 PM

I think my default cutoff temp is set too low... I can't seem to find it in the bios either. That can't be changed from windows can it?
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June 30, 2010 10:57:31 PM

m1ke1991 said:
I think my default cutoff temp is set too low... I can't seem to find it in the bios either. That can't be changed from windows can it?


I don't think so. I don't know I've never passed my limit. 75C as a limit seems weird. 3.8 is nice though, that voltage is much better. I'd stick with that too.
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June 30, 2010 11:17:46 PM

maybe I have too much thermal paste on the processor... when i installed it... it honestly seemed like there was a good bit that came already on it. Maybe I should clean it off a little?
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June 30, 2010 11:20:47 PM

I'm at 3.6 with 1.23v and was able to get through 10+ minutes of prime95 before it hit 73C and I stopped it... I'd let it go further but it cuts its self off at 74-75... I wish I could edit that setting.
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June 30, 2010 11:22:35 PM

What do you mean by "it cuts itself off"? The computer shuts down?
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June 30, 2010 11:32:06 PM

yeah, it will just shut off and restart. I'm actually trying different things now... instead of using that "ez oc" setting... I just went in at changed it to 21x181 and got a much more stable 3.8 compared to the 20x190... good idea to be changing the ratio? I was thinking about making it 22x182 for a 4.0... Maybe I could stabilize it there.
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June 30, 2010 11:49:07 PM

It could be shutting for many reasons. A CPU is less and less efficient the hotter it gets, sometimes temps push it over the edge if it's already unstable, but I don't think that's your motherboard or chip temp limit shutting it down.

For example: When I was messing with my old CPU, it would pass tests and pass tests, but as SOON as it hit a certain temp, I'd start to get errors.

And like I said before, some people claim odd multipliers work better than even ones on i7's. This could explain why 21x works better for you, who knows. Just keep messin around with crap I guess. =]
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June 30, 2010 11:49:15 PM

Ok... I'm at 21x191 and so far i've made it into windows every time... But then I open the internet browser and it blue screens lol. So I bumped the voltage to 1.28 and I was able to actually load the webpage this time... ^_^ *sigh*

On the bright side... I'm sitting at 49C idle... A little lower than previous temps at 4.0.
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June 30, 2010 11:58:01 PM

I tried prime95 and got an error within seconds... voltage issue?
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July 1, 2010 12:02:00 AM

Could be a lot...

Usually if you get an error right away, my first guess would be memory. If not, it's just very unstable. You keeping an eye on your RAM frequencies? Just make sure they're within your 2000MHz limit and your timings are at [Auto].
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