STOCK OR OVERCLOCK? :)

mkohman

mkohman

mkohman

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1 Sep 2009
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I was setting mine at 21 x 181 for 3.86GHZ, vcore 1.27500 and qpi on auto with ram volt or 1.66 I did prime 95 for 4 hrs no errors no reports and max temp on full load was 69 degrees..

Last night I got a little freaked out as I have this horrible feeling that my system may blow up with the voltages lol .. I never overclocked before this was my first attempt.. but thought to myself "is thee really any need for overclocking for what I use the pc for (photoshop, lightroom, movies etc..) I am not a gamer by any means..

However the thought of having it run at 4.0GHZ just makes you want to have it.. so would you guys reccomend I set up again tonigt? This time at 21 x 191 , turbo enabled , vcore 1.30000 (or shall it be lower) timings for my ram is 9 9 9 24 so I will set them too what should my uncore and qpi multiplier be also what should my ram volt and my qpi and ioh voltage be . pleaase guide

Thanks ..

PS: when I was hitting 3.8 GHZ there were 4 little blue lights constantly light up when pc running on the top right of the mother board which I think indicate the level of overclocking .. is this safe? how many blue light should it be max? and there was a small green light which was on by the ram when I put the ram voltage to 1.66?
 
What hardware are you using?

You don't need an overclock. You don't need a quad core either, a stock speed dual core would be just fine.

However you've bought the hardware now, so unless electricity bills are a concern you should overclock it. Even if they are, you should undervolt it.

Cure for "getting freaked out" is research. There's a thread over in general hardware at present to the effect that hardware lives pretty much forever. If overclocking routinely killed hardware it wouldn't be very popular. It wont blow up.
 
Read your motherbroad manual it should tell you what the 4 blue lights mean.

Nothing wrong with OVERCLOCKING m8, your ram voltage depends on your make if you got your memory from OCUK look for it up in the memory section and you'll get the volt-rating from there.

Leave every thing on auto for know, check your CPU Vcore using CPU-Z(GOOGLE IT) for correct voltage(CPU-Z = mine is 1.264 due to volt drop but in Bios = 1.28125v).

Yes try and lower your CPU Vcore, but remember to check for stability when you have reached your miminum voltage where you can still boot in to windows. If it fails just up it a notch Vcore and test till stable..

My i7 920> 4GHz idles > 30-34'c upto 38-42'c / 100% load > 66-70'c upto 70 - 74'c depending on room temps. But remember when gaming etc your full load temp will be much lower.

Theres plenty of overclocking guides on the net google it with your CPU type and motherbroad.

Lasty can you improve your case cooling by adding extra fans?
 
hi,

i just got a i7 920 and for my first clock pushed it up to a very stable cool 3.4 gig
what i want to know is can you overclock a chip so that although its reading all sorts of high frequancy's it actually does less work ?

I do climate modeling on my machine and there are others with far higher overclocks who dont seem to get the work done that my rig does

Ian

best regards
Ian
 
Guys.. I appreciate all the feedback and comments. I have used this guide:

http://www.clunk.org.uk/forums/overclocking/22106-core-i7-overclocking-guide-beginners.html

Here is My Rig:

Antec P183 Case

2 x 40GB Kingston SSD for Main C Drive in Raid0 Array.

Gigabyte EX58-UD5 Intel X58 Motherboard

Intel Core i7 920 D0 Stepping (SLBEJ) 2.66Ghz

Corsair H50-1

Corsair XMS3 6GB PC3-12800C9 DDR3

Sapphire 5770 1GB New Edition

Corsair 1000W Power Supply

4 x 1.5 TB seagate 7200 RPM 32mb cache for storage

Here is what I have done to OC yesterday but now put it back to stock as I was too worried maybe I did the wrong thing and I did not want to kill my cpu or ram or motherboard..:

1 - Reset my bios settings to default
2 - Turned off all the power saving modes off (Disabled)
3 - Upped the Cpu Multiplier from 20 to 21x
4 - Changed the BCLK from 133 to 191 to get 4.00 GHZ in CPU speed
5 - I set my Ram dimmings to 9-9-9-24 as stated on the Ram sticker
6 - I then upped the vcore (cpu volt) 1.1v and the dram volt to 1.66 I left the QPI voltage and the rest on Auto (is this correct?)
7 - I successfully entered into windows and opened task manager, core temp and cpu-z very similar screen shot to what you have
8 - Opened prime 95 and hit to the stress test .

I think I was stable at vcore 1.30000, vdimm 1.66, qpi auto

but people say with the intel i7 D0 chip 1.27500 is too high and 1.66 for ram is too high? also been advised to set the qpi manually .. now this is where this all becomes more confusing to me ... can someone please give me a little tip, help and advice? thanks.
 
OLDPHART said:
Corsair XMS3 6GB PC3-12800C9 DDR3
(Corsair XMS3 6GB (3x2GB) DDR3 PC3-12800C9 (1600MHz) Tri-Channel (TR3X6G1600C9) [TR3X6G1600C9])
> Ram Volts = 1.65v

Corsair memory YOURS - http://www.overclockers.co.uk/showproduct.php?prodid=MY-169-CS

Max volts for i7 920 DO is 1.375V / yours 1.275v is fine DID YOU CHECK WITH CPU-Z.

Did you read my post? OLDPHART :)
Click to expand...

which post you refering to bro? Also whats your voltage settings? Iwanted to know what I should put the qpi and vram .. the vdimm will not allow 1.65 it goes from 1.64 - 1.66 and 1.66 is dark pink . I think that smeans danger lol :)
 
Hey I finally got a good stable overclock at 3.8 I think (After 4 hrs of Prime 95)

Upped to the latest bioes F9m
Cpu Multi - x21
Qpi - Auto
Bclk - 181 (cpu speed 3.80)
Standard Mode
Set all my Ram dimmings to 9-9-9-24
Advanced cpu features:
Clock ratio 21
Turbo enabled
Cores enabled all
Multi-threading enabled
Enhanced halt (C1E) enabled
C3/C6/C7 state support disabled
CPU thermal monitor enabled
CPU eist function enabled
Virtualization tech enabled
Bi-directional prochot enabled

Advanced voltage control:
Load-line calibration enabled
CPU vcore 1.3500
QPI/VTT voltage :Auto
IOH core: Auto
DRAM voltage 1.66


The Rest of the settings left as Auto


Do these settings and volts look ok to you guys? I hope I am not in the danger zone..

Also why does the windows 7 64Bit (View basic information about your pc still show my cpu running as 2.66?) CPU eist function enabled which is good for me as I do not want the cpu to run at 3.8 all the time only when it needs that push.. as most the time when I leave the pc for downloads there is no point for it to run at 3.8

CPU-Z reports the cpu volt at 1.328 thats why I put my vcore to 1.35 which I think and hope is ok :)

Ran Prime 95 for 4-5 hrs overnight and no errors .. seems to be running stable..

My temps are : 30-38 in idle and when full load it can reach upto 73-75

Please can I have some feedback if things are ok so I can now finally after a week of messing around sit back and enjoy my New Rig :) lol

Thanks for all your help ad support guys ..
 
Thanks Ian .. I now lowered the vcore to 1.2625 and max temps are 70 on full load.. however the 1 thing that confuses me will I be more safe to dial in a qpi voltage and an Ioh voltage or just leave them Auto? This is whats confusing me

I have been running Prime 95 at vcore 12625 for th elast 1 hr now and no errors .. I am going to restart and lower a notch more see if it allows me to .. untill I find my last minimun vcore volt..

can someone please let me know if I will be more safe to dial in a qpi voltage and an Ioh voltage or just leave them Auto? This is whats confusing me
 
Nice one bud - :)

Just CHECK PCI FREQUENCY (MHz) IS AT---101.

Bclk - 181 (cpu speed 3.80) try upping your BLCK TO GET 4.0(bit of luck you should get it) no need to adjust anything but remember to test for stability.

Then try your memory timings at --- 8-8-8 24 any probs revert back to 9-9-9 24.

Also try reducing your CPU Volts keep lowing them till you can't boot into windows, go back up a notch till you can, them test for stability.

I,m using the same mobo ex58-ud5 4.0 at CPU-Z = 1264V / bios - 1.28125v / Mem timings 8-8-8 24 1.65v(yours 1.66v thats fine m8

Auto is fine , but you can adjust the QPI/VTT VOLTS TRY AT 1.4 IF OK REDUCE IT A NOTCH AT A TIME TILL UNSTABLE,
GO BACK UP TILL STABLE, SET IOH CORE TO - 1.100v thats what mine is at > Test for stabilty.

Download INTELBURNTEST( TEST AT 5 DEFAULT WHILE ADJUSTING SETTINGS , WHEN FINISHED RUN AT 10) FARE QUICKER AND JUST AS GOOD AS PRIME.
 
Last edited:
OLDPHART said:
Nice one bud - :)

Just CHECK PCI FREQUENCY (MHz) IS AT---101.

Bclk - 181 (cpu speed 3.80) try upping your BLCK TO GET 4.0(bit of luck you should get it) no need to adjust anything but remember to test for stability.

Then try your memory timings at --- 8-8-8 24 any probs revert back to 9-9-9 24.

Also try reducing your CPU Volts keep lowing them till you can't boot into windows, go back up a notch till you can, them test for stability.

I,m using the same mobo ex58-ud5 4.0 at CPU-Z = 1264V / bios - 1.28125v / Mem timings 8-8-8 24 1.65v(yours 1.66v thats fine m8

Auto is fine , but you can adjust the QPI/VTT VOLTS TRY AT 1.4 IF OK REDUCE IT A NOTCH AT A TIME TILL UNSTABLE,
GO BACK UP TILL STABLE, SET IOH CORE TO - 1.100v thats what mine is at > Test for stabilty.

Download INTELBURNTEST( TEST AT 5 DEFAULT WHILE ADJUSTING SETTINGS , WHEN FINISHED RUN AT 10) FARE QUICKER AND JUST AS GOOD AS PRIME.
Click to expand...

Thanks I think my vcore at 1.26 is stable.. you said keep dropping v core untill windows does not boot.. lets say I dropped it to 1.2 it boots and then at 1.18 it doesnt .. does that mean 1.2 is what can use or do I need to up it? How do I know if its stable. I have tried the vcore one notch below 1.26 and one of the workers stopped working in prime 95 .. when this happens do I need to up the vcore or does that mean I need to up something else?

This is the thing that confuses me .. which one to do when? I mean at what stage do I try my timings for 8-8-8-24? thanks
 
OLDPHART said:
Nice one bud - :)

Just CHECK PCI FREQUENCY (MHz) IS AT---101.

Bclk - 181 (cpu speed 3.80) try upping your BLCK TO GET 4.0(bit of luck you should get it) no need to adjust anything but remember to test for stability.

Then try your memory timings at --- 8-8-8 24 any probs revert back to 9-9-9 24.

Also try reducing your CPU Volts keep lowing them till you can't boot into windows, go back up a notch till you can, them test for stability.

I,m using the same mobo ex58-ud5 4.0 at CPU-Z = 1264V / bios - 1.28125v / Mem timings 8-8-8 24 1.65v(yours 1.66v thats fine m8

Auto is fine , but you can adjust the QPI/VTT VOLTS TRY AT 1.4 IF OK REDUCE IT A NOTCH AT A TIME TILL UNSTABLE,
GO BACK UP TILL STABLE, SET IOH CORE TO - 1.100v thats what mine is at > Test for stabilty.

Download INTELBURNTEST( TEST AT 5 DEFAULT WHILE ADJUSTING SETTINGS , WHEN FINISHED RUN AT 10) FARE QUICKER AND JUST AS GOOD AS PRIME.
Click to expand...

Oldphart.. bro.. I think I am going to stick with 3.8 as this is my sweety spot :) I changed the freq of pci from 100 to 101 as you said and changed the ram timings to 8-8-8-24 see if there is going to be any problems (by the way sorry for being silly but on my ram sticker it says 9-9-9-24.. what actually difference happens when changed to 8-8-8-24? Also will I be able to as mine says 9-9-9-24?)

I am running prime with vcore at 1.26250 and vdimm at 1.66 also ram timings at 8-8-8-24.. I hope all goes well and if it survives 6 hrs of prime then I am happy and no more tweaking for me.. I will save the profile as back up and start using my new rig :)

Thanks for help and support..
 
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