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Need help with overclocking the i7 920

Last response: in Overclocking
April 13, 2009 6:13:43 AM

hey guys, i built my pc in feb of 09 with the current items
sniper case
gigabyte ex -58 extreme mobo
i7 920 proc
v8 heatsink
6gb of kingston hyper x ram
radion 48702gb x2 v/c
corsair tx 850w power supply.
raid 10 setup.
windows vista 64 bit

i been trying the past couple days to overclock my proc to anything between 3.2 and 3.5 with what most members settings that i found on the forums, but my screen either will go blank after the drivers load or right before windows loads it would go blank, or i would set everything up to be running at 3.5ghz in bios and when i restart the pc i check my computer properties to see that it goes to 2.66gb from 2.67gb. its my first time over clocking but im catchin on pretty fast, is there anyone out there with a similar setup that can help me with this? big thanks in advance. also if there is please post what you did in detail so i can try your settings. thanks :) 

More about : overclocking 920

April 13, 2009 6:16:23 AM

i also tried using easy tune 6 to try to get it to 3.2 automatically but after restarting the computer the highest ive seen was 2.79 in my comp properties, and if i put c.i.a 2 on full thrust windows wont boot up, i have to disable it or lower it so it would boot up. :??: 
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April 14, 2009 1:30:17 AM

thanks that should give me some homework lol. anyone else have specs for 3.5 overclock?
April 15, 2009 12:23:58 AM

there has to be some one, i have a pretty popular setup that alot of people are running as well.
April 15, 2009 12:30:05 AM

set the bclk to 180
set the vcore to 1.2
set the qpi/dram to 1.2
set the dram bus voltage to 1.6
set the ram multi to 8x
leave the cpu multi to 20x
turn turbo off
turn speedstep off
leave HT on
April 15, 2009 2:02:36 AM

thanks fooly, il c if that works :D  :D 
April 15, 2009 4:44:40 AM

swweeetness i got it oc to 3.6ghz!!!! time for the tests, if anyone knows how i can pull up the performance test screen and numbers let me know :D  :bounce:  :D 
April 15, 2009 4:58:48 AM

ok after i started to run prime95 i got the blue screen error message, does that mean my voltages are off? does anyone know?
April 15, 2009 5:10:19 AM

it seems pretty stable according to easy tune, it jumps from 3602mhz to 3604mhz. how else can i chekc the stability?
April 15, 2009 5:56:21 AM

also tried playing call of duty and after 15min it gave me the blue errer screen and i had to reboot, after reboot i get a fuzzy windows screen and have to reboot again till it cooled off a bit, my temps according to easy tune are 39c for proc and 54 for system on idle.
April 15, 2009 3:31:08 PM

Yeah, your voltage is probably too low. Try bumping the vcore to about 1.22 or a little above and try again. Overclocking is pretty touchy and requires a lot of testing with prime95. Keep at it, you'll get there.
April 15, 2009 5:10:40 PM

i tried bumping it up to 1.2 -1.4 and it ran for like 10-15 min this time before i got the blue error screen, im put 1.5 on vcore now and am testing again. is that too high voltage?? please let me know. my cpu temp is 54c thats with prime95 running.
April 15, 2009 5:37:26 PM

alright i bumped teh vcore voltage to 1.5 and it ran for at least 20min now with prime 95 pushing my cpu 100percent the whole time. but is still crashed. any advice what else i can do? is the vcore safe at 1.5? thanks for the help and support!!
April 15, 2009 7:58:28 PM

try increasing the QPI/Dram as well

Also, what temperatures are you showing under the prime95 stress test using RealTemp?
April 15, 2009 11:38:07 PM

ok i picked up the QPI PLL from 1.2 to 1.26 and am running the test again
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a b K Overclocking
April 16, 2009 12:09:38 AM

All yours Foolycooly, Have fun. :D 

April 16, 2009 12:39:07 AM

thanks to foolycooly, he helped me acheive something i was dreaming about! :D  thanks for all your help buddy, i picked up the qpi to 1.3 becasue it crashed again at 1.26 but it might have crashed becasue i was doing too many things while the torture test was running. i downloaded real temp and here are the temps in order 72 70 70 69c while under the torture test. how am i doing? is my vcore and QPI too high?
April 16, 2009 12:51:31 AM

your temps are good...see if you can run prime95 for over an hour. If you can, it's safe to assume it's at least mildly stable. I would run prime95 overnight though. Let us know if it makes the hour.
April 16, 2009 1:23:15 AM

i made it for 45min this round but again i was doing things on the computer , i will try again this time not touching anything before i crank up the voltages again. do you know what the safe voltages are for vcore and QPI? Idont want to push it to the point where it will burn out in a month lol. my max temps were 74 72 72 70 this round.
April 16, 2009 2:06:02 AM

I wouldn't push the vcore past 1.4 on air. You can try bumping it in single increments at this point (.0125 I think is the increment on my BIOS). Doing other stuff while running prime shouldn't really make a difference as the CPU is already running at 100%.

I woult try 1.3125 vcore and leave the qpi at 1.26. Be sure to continue to monitor your temperatures. You don't want to go much over 80 under full load. (full thermal saturation occurs around 10 minutes of prime95 small FTTs)
April 16, 2009 3:52:54 AM

ok thanks, i changed my vcore from 1.25 to 1.3 and QPI from 1.3 to 1.26 . and will test now, which test on teh prime95 is teh best to use? beacsue i keep using the blend. thanks
April 16, 2009 4:02:03 AM

the blend is fine, but I believe small FTTs is the one that pushes it the hardest. I'm not sure about it though.
April 16, 2009 1:47:14 PM

hey i left on all night with the latest settings that you gave me and the last the last two threads, and i ran it fo r9 hours overnight without a hiccup, my maximum temps were 74 73 72 70c :D  :D  what do you think should i lower the voltages and try again to see if i can acheive it with less voltage? or do i think i hit the sweet spot? btw i will be water cooling it in a month or so.
April 16, 2009 3:05:40 PM

the temps are good so you should be ok where you are, but it never hurts to try to decrease voltages. It's up to you
April 16, 2009 3:27:32 PM

personally those temps are a little high, unless that's the highest it went over the 9 hours, in which case a 9 hour stress test that sounds fine
April 16, 2009 3:59:12 PM

For first time overclocking you shound't have started out on an i7. Jst make sure the uncore and vcore are set to reasonable levels and your CPU voltage is under 1.625v.
Once you get it to overclock stabily and get the temps under 100 fahrenheit on idle you know you have done right.
April 16, 2009 6:26:19 PM

mamw93 said:
For first time overclocking you shound't have started out on an i7. Jst make sure the uncore and vcore are set to reasonable levels and your CPU voltage is under 1.625v.
Once you get it to overclock stabily and get the temps under 100 fahrenheit on idle you know you have done right.

Overclocking the i7 chipset is no more difficult than overclocking an older chipset. I would not discourage anyone from trying. 1.625v for the vcore is WAY too high...especially for someone on air. You can seriously damage your cpu...this is not good advice.

100F is about 37c. You do not really need to idle below 37c...although it would be nice. Realistically, an overclock may put you in the 39-44 range at idle on air which should be acceptable.
April 16, 2009 9:36:08 PM

I tend to agree with fooly, but I do think OCing the i7 is a little more difficult simply because its got some notable differences. ...but nothing to be discouraged about.

...but why is 3.6Ghz such the goal?? What's magical about these stratospheric OC attempts (not that 3.6Ghz is stratospheric...just generalizing). Is CPU really not fast enough @ stock, 3Ghz, or 3.3Ghz? ...or is there some right of passage I missed out on? :) 
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April 16, 2009 10:05:52 PM

1.5v on a 45nm cpu? i wouldnt even do that with my Q6600 65nm cpu on air!

Dont expect your cpu to be like someone elses cpu - every sample is different, but every guarentee is clear - the set clock speed is the only guarenteed clock speed etc.

you need to overclock bit by bit and do a propper burn in test each step of the way to make sure its solid!
April 16, 2009 10:53:12 PM

thanks for all your inputs, especially foolycooly!! for supporting me and helping me through the past couple days, im idling on 43 and 44c i might drop it slightly to see if it can go overnight without crashing, but yes those were the maximum temps that occured during the test, when i came in the morning they were in 69c range, but prob because i left my window open lol. reason for the 3.6? too many ... i just like playing with my toys :D  after i find a good watercooling kit in the next month i will eventually try to hit 4.0 :ouch: 
April 16, 2009 10:57:37 PM

Good work vince. I would definitely try to lower the voltages one step at a time and test with prime95 in half hour chunks. When you finally BSOD again, bump it one increment back up and test for a couple of hours again. You should be able to bring your temps down a few degrees. Optimally, you should idle around 40 or below. However, it's my personal opinion that idleing anywhere under 45 is acceptable.

You can also try turning HT off. It makes a fairly dramatic difference in temperatures.
April 16, 2009 10:57:58 PM

Vince, that's the right answer in my book. I think you can do 4.0 on good air...a TRUE or Noctua...but it'd be saner submerged.
April 16, 2009 11:03:06 PM

halcyon said:
I tend to agree with fooly, but I do think OCing the i7 is a little more difficult simply because its got some notable differences. ...but nothing to be discouraged about.

...but why is 3.6Ghz such the goal?? What's magical about these stratospheric OC attempts (not that 3.6Ghz is stratospheric...just generalizing). Is CPU really not fast enough @ stock, 3Ghz, or 3.3Ghz? ...or is there some right of passage I missed out on? :),2...
Read the conclusion, 3.66 is the magic number :o 
April 16, 2009 11:04:37 PM

ok i wil try that, waht major changes would i see with ht off?
April 17, 2009 12:49:59 AM

great find!! nice article , guess the 4.0ghz would be a waste :o 
April 17, 2009 1:11:21 PM

^^ quick lowdown on what Hyper-threading does.

Basically it creates two virtual processors on each core. (the OS sees 8 processors in the case of the can see this by looking at your task manager).

There doesn't seem to be a lot of good information out there concerning its effectiveness on the new i7 chipset. In the days of the pentium 4 processors, a pretty dramatic improvement in performance could be seen. However, since the i7 already has 4 relatively fast cores, a major improvement might not be noticed (with the exception of some programs that can utilize 8 cores (???))

Another thing to note is that HT is a power hog. This explains why turning it off shows a favorable temperature change. Hope this helps.
April 17, 2009 3:41:45 PM

thanks for the breakdown , yes it deff makes sence now il try turning it off andd see what happens
i tried lowering the vcore to 1.26 and qpi to 1.24 and got 75 73 72 71 for max temp with prime95 small fft test. and it idles at 42-43 room tempuratures. not much in tempurature drop, does the QPi affect the temps as much as vcore?
April 18, 2009 12:28:59 AM

heres what i did , i changed it to 3.66 ghz with clock speed 183, vcore 1.275, qpi 1.275, dram volt 1.6v and did the prime 95 test , max temps were 75 74 74 72 in my warm room. i think il stick with this setup for a while. i had a question cooly, what kind of heatsink do you have for the proc? or did you go w/c? i have the v8 and started to wonder if its worth gettting it watercooled since i bought the water blocks already a couple months back for the proc and video card. but if its not worth it, im thinking maybe there are better heatsinks than my v8 that will keep my proc a bit cooler. i already have a buyer for my v8 lol
April 18, 2009 2:21:50 AM

I have the v8 just like you.
April 18, 2009 2:30:00 AM

lol ok. im idling at 45c to 46 with my recent change to 3.66, so i was thinkin if getting a better cooler. whats your idle? you have 3.8ghz right. what are your max temps? my comp is under my desk so it really doesnt get much ventilation.
April 18, 2009 6:05:03 AM

I idle anywhere from 37-41 depending on how warm my room is. I peaked around 85 after a 13 hour prime95 test but that was with very high ambient temps.
April 18, 2009 7:41:19 AM

wow that is nice idle, i idle around 41 when its cool in the room, but when its 80f outside, then this room gets warm and it idles at 45c , dont know what to do . anyways thanks for all your help man, i realy appreciate your patience and putting up with with my noobiness. :D  i will see you arounnd the forum!!
April 22, 2009 6:05:01 PM

hey fooly i have one more question did you change your QPI VTT voltage? because mine is still at factory setting,and i wanted to know if its safe to mess with that voltage. thanks, the QPI PLL is the one i was always messing with. THANKS
April 22, 2009 7:42:39 PM

my qpi is set at the stock 1.2000 (manually set there...since auto will probably overvolt)

Keep in mind I think I got very lucky with my will likely need higher voltages.
April 23, 2009 12:15:24 AM

the only things under voltages that i changed was the vcore , dram , QPI PLL . do i need to have any other ones changed? my QPI VTT IS SET AT FACTORY SETTING @ 1.175V AND MY QPI PLL IS AT 1.26V. ALSO I DONT KNOW WHAT PCIE AND CPU PLL ARE BUT THEY ARE BOTH ON AUTO.
April 23, 2009 12:20:19 AM

ah, we may be talking about two different things. I would leave them all set to where they are and only modify the vcore and the QPI/DRAM (I'm guessing QPI/PLL for should research this more)
April 23, 2009 12:34:42 AM

i tried finding what qpi dram was before and i found somewhere where it said that it was qpi pll, so thats why i was playing with the qpi pll the whole time until now i started getting thoughts that maybe i am suppose to tweak the qpi vtt also lol.
April 23, 2009 12:39:09 AM

yes i found it . qpi pll = qpi/dram still wondering what qpi vtt is