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Guide to Overclocking the Core I7 920 or 930 to 4.0ghz - Page 100

post #991 of 1477
Quote:
Originally Posted by Tomiger View Post
Alright thanks, I'll give that a shot now (now, as in, 2 hours ago when I started the test ha). Started at vcore 1.275 and I've been running P95 blended for 2 hours and 15 minutes error free so far. I'll post back with further info later.

EDIT: 5 hrs and 45 minutes in and still going, max temp of 80, but been sitting at 74-75 most of the time.

Also, I was wondering: I am switching from 4 GB OCZ gold (8-8-8-24 spec, 1.65v) to 6 GB Corsair (8-8-8-24 spec, 1.65V). The P95 I am running now is with the 4GB of OCZ in. If I prove to be stable under that, would it still be a good idea to do another 16-24 hour P95 run with the new Corsair RAM when I get it? lngu81 said I would be fine, assuming I had ICH and IOH on auto, but right now I am using criskoe's suggestion of 1.2 for ICH and IOH. Would I need to run P95 again with those settings and 6GB of RAM, or do the ICH and IOH not matter when adding a larger amount of RAM?
Its always good to retest system after adding something new into the equation. its also good to find defective components right away. (Makes rma easier so i would say a retest is needed. But for voltages you should be fine.

There are many diferent ways to aproach your oc. Some like to start with low voltages and work their way up. I like to start with high voltages and work my voltages down.. By starting with high voltages you will find stable oc faster but yes there will be some voltages that are not need to be that high but you have a stable system right away and working voltages down feels nicer than having to raise them... lol It also gives me a idea where will my oc will end up at (ie Top Speed and temps) Its all a preference tho., both ways will work. I am still new to oc as well but this way worked for me so ill stick with it.

The sugestion i gave about 1.2 ich and ioh is just a starting point. And like ingu81 said, yes it is high, I suggestted it just to rule it out of the equation for stability. once you find a stable vcore and qpi you can call it a day and leave it at 1.2 as it is on the high side but still within safe area or from there you can go the extra mile and start to lower voltages for eficency and re test as i did. i started at 1.2 for both and ended bring it back down after i found stable vcore and qpi. i also brought my cpu pll back down from 1.88 to 1.80 as well. i have my 930 at 4.0 and my ioh is 1.16 and my ich is standard at 1.11. but dont start lowering voltages untill youve passed a FULL 24 hour test. As well when lowering only change one thing at a time and retest untill you find your bottom for that setting then move on to the next thing to lower..... This definatly sounds time consuming, yes . But in the end will save you alot of time.

i started out with exactly what i suggested to you and ended up with
my 930 was 20 linx passes and 24 hour prime95 Priority 10 stable @

Cpu Ratio: 21
Turbo: Off
Blk: 191
Dram Freq: 1531
UCLK: 3063 Mhz
QPI Link: 6893MT/s
Ram Timming: 9,9,9,24,1n
Load Line Cal: Auto
Vcore: 1.225(Bios) 1.230(CPUZ)
CPU PLL: 1.802
QPI/DRAM: 1.3
DRAM BUS: 1.603
IOH: 1.16
ICH: 1.1
Power saving OFF
Hyperthreading ON
but remember all chips are different and motherboard is part of that equation as well...

To find the lowest possible voltages for stable oc is very time consumming and takes alot of patience and many test. So take your time and remember to enjoy your self.
your almost there tho dont worry dont give up.
Edited by criskoe - 8/23/10 at 7:11pm
post #992 of 1477
Word, I'm 10 hours and 30 minutes in with no problems. Now, if I become stable and decide to try to lower the ICH and IOH, how soon will I get an error if it's unstable? Is there a "range" of time that P95 will run into a problem when the ICH or IOH is too low? Or would I need to run a 16-24 hour test after each decrement of a voltage?

Thanks for all the help.

EDIT: Also a question: If I get stable now at ICH/IOH 1.2, would it be worth trying to set them to auto and running tests? Is auto adequate enough (or at least better than having it all the way to 1.2)? I mean, in most guides I've read through, they mention that its ok/good to leave it on auto if you're not working with blcks above or at 200.
Edited by Tomiger - 8/23/10 at 7:17pm
 
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post #993 of 1477
Quote:
Originally Posted by Tomiger View Post
Word, I'm 10 hours and 30 minutes in with no problems. Now, if I become stable and decide to try to lower the ICH and IOH, how soon will I get an error if it's unstable? Is there a "range" of time that P95 will run into a problem when the ICH or IOH is too low? Or would I need to run a 16-24 hour test after each decrement of a voltage?

Thanks for all the help.

EDIT: Also a question: If I get stable now at ICH/IOH 1.2, would it be worth trying to set them to auto and running tests? Is auto adequate enough (or at least better than having it all the way to 1.2)? I mean, in most guides I've read through, they mention that its ok/good to leave it on auto if you're not working with blcks above or at 200.
Awesome dude.
Remember this is just what id do and someone might say or prove im wrong but this is what id do in this order.....
First off id try to lower my suggested qpi from 1.35 to 1.325 then 1.30 and so on.
Then id do the cpu pll from 1.88 down in increments of .04 (ie 1.84, 1.80.
Then id do ioh and ich from 1.2 to auto
If auto deosnt pass then lower in .02 increments (ie 1.2-1.18-1.16 and so on.)
as for time id do 4-8 hour priority 9 tests each one
then finish with a 24 hour priority 10 test when reached desired voltages that you are happy with.
But only change one thing at a time....

I still could go lower with my voltages. i still have yet to hit my bottom voltages. but for now my system is stable with completly aceptible voltages so im happy. So for now im just killing zombies and encoding video and when i got the extra time ill go at my voltages again. No rush..

I hope ive been help....
Edited by criskoe - 8/23/10 at 7:34pm
post #994 of 1477
Alright, gotcha. My new RAM is on its way, so I'll wait for the adjustments after I've installed it all and then do full tests. My computer needs a rest haha. Thanks again.
 
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post #995 of 1477
Quote:
Originally Posted by Tomiger View Post
Alright, gotcha. My new RAM is on its way, so I'll wait for the adjustments after I've installed it all and then do full tests. My computer needs a rest haha. Thanks again.
lol... right on... definatly dont forget to enjoy that rig in between test!


gl dude
Edited by criskoe - 8/23/10 at 7:55pm
post #996 of 1477
Quote:
Originally Posted by Tomiger View Post
Word, I'm 10 hours and 30 minutes in with no problems. Now, if I become stable and decide to try to lower the ICH and IOH, how soon will I get an error if it's unstable? Is there a "range" of time that P95 will run into a problem when the ICH or IOH is too low? Or would I need to run a 16-24 hour test after each decrement of a voltage?

Thanks for all the help.

EDIT: Also a question: If I get stable now at ICH/IOH 1.2, would it be worth trying to set them to auto and running tests? Is auto adequate enough (or at least better than having it all the way to 1.2)? I mean, in most guides I've read through, they mention that its ok/good to leave it on auto if you're not working with blcks above or at 200.
Nice! From here on, you are all good to mess around with most of the voltages until BSOD.
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post #997 of 1477
Another thing real quick: I do have turbo mode disabled with the new BIOS version I'm using (F12), and using the x21 multiplier (specifically set in BIOS). CPU-Z reads the correct speed (3.8) but the regular windows system info still says 3.62ghz. I understand that the turbo mode kicks up the multiplier under certain conditions, but I thought with it disabled, I would have the x21 multiplier at all times, but from what I can see in the system info windows gives me, it is still at x20.

Do I have a true x21 multiplier at all times or is there still something not turned on/off preventing me?

EDIT: Ah, guess I overlooked something. Apparently whenever I disabled turbo and set the multiplier to x21, it automatically enabled turbo mode again, and with the x21 set, I am unable to turn turbo off. Looks like I have to head back to 200x19, unless someone knows if I can have the x21 multiplier without turbo on, with the GA-UD5 board (I've had no luck finding out). Hopefully I can find the settings that'll work for that, since I was pretty much stable with 180x21.
Edited by Tomiger - 8/24/10 at 10:39am
 
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post #998 of 1477
Quote:
Originally Posted by Tomiger View Post
Another thing real quick: I do have turbo mode disabled with the new BIOS version I'm using (F12), and using the x21 multiplier (specifically set in BIOS). CPU-Z reads the correct speed (3.8) but the regular windows system info still says 3.62ghz. I understand that the turbo mode kicks up the multiplier under certain conditions, but I thought with it disabled, I would have the x21 multiplier at all times, but from what I can see in the system info windows gives me, it is still at x20.

Do I have a true x21 multiplier at all times or is there still something not turned on/off preventing me?

EDIT: Ah, guess I overlooked something. Apparently whenever I disabled turbo and set the multiplier to x21, it automatically enabled turbo mode again, and with the x21 set, I am unable to turn turbo off. Looks like I have to head back to 200x19, unless someone knows if I can have the x21 multiplier without turbo on, with the GA-UD5 board (I've had no luck finding out). Hopefully I can find the settings that'll work for that, since I was pretty much stable with 180x21.
Have you tried turning Speed Step off.. that will prolly do the trick..
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post #999 of 1477
I didn't notice that setting anywhere. I'll look around again for it.

EDIT: Yeah, I definitely don't have a speed step option, at least not an option that explicitly says speed step. I am using BIOS F12 on the GA-ex58-UD5 it that helps/means anything. I imagine I may just be SOL in terms of using the x21 multiplier without turbo mode on. My new RAM comes in today though, so by tomorrow I'll be back testing/adjusting voltage hopefully, and using the x19 multiplier.
Edited by Tomiger - 8/26/10 at 10:19am
 
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post #1000 of 1477
Speed Step can also be called EIST, Look for that. For your board im pretty sure its called CPU EIST.......
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