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I7 975 Extreme Overclocking Help

Post Date: 2009-06-25
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Azrael35 View Drop Down
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Posts: 8 		  Quote Azrael35 Quote  Post ReplyReply bullet Topic: I7 975 Extreme Overclocking Help
    Posted: 25 Jun 2009 at 5:35pm
Hey guys.

I recently got a new computer and i wanted to overclock it to somewhere around 4.4 to 4.8

Specs

Core i7 975 Extreme Edition @ 3.33ghz (water cooled)
12gigs Corsair Dominator 1600mhz (running at 1333 for some reason)
2x EVGA GTX 295s (Quad SLI)
Running on a MSI Eclipse Motherboard.

I currently have been able to overclock it to 3750mhz by increasing the bus frequency to 150 with the multiplier set to 25 and its running at 1.32v.

I can go as high as 160mhz on the bus speed which makes it run at 4.1ish but the stability goes down.

Ive looked on the internet and apparently with my exact setup people have been able to get the processor to sing as high as 5.7ghz with stability. I am looking to get it to 4.8ish preferably. Any advice you guys can give would be much apprechiated i know the digital storm guys are genius's I should have just paid them to overclock it.

-Az
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 25 Jun 2009 at 5:55pm
No one has an i7 @ 5.7Ghz "stable" as in 24/7 stable. They may have one that is 1m pi stable. lol
 
What do you have for water cooling? what are your load temps? What about the other voltages? uncore multi? ram multi and timings?
4.6Ghz is possible with a good CPU and good cooling..
 
I have proof. lol But I doubt it will be possible with all the ram slots filled.
 


Edited by justin.kerr - 25 Jun 2009 at 5:56pm
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Mikey14 View Drop Down
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Posts: 148 		  Quote Mikey14 Quote  Post ReplyReply bullet Posted: 25 Jun 2009 at 6:16pm
Yeah and Justin's is a 920 the 975 XE should have even more ceiling.  Also those temps are well within range.  
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 25 Jun 2009 at 6:22pm

Still have yet to see any i7 with HT on 24/7 prime95 stable over 4.7Ghz a 975 or not. I can run 3d mark or pi at 4.9Ghz http://valid.canardpc.com/show_oc.php?id=583098   But no way prime95 24 hour stable. I have seen 975's run well into the 5ghz range for benching, but not stable OC.

 
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DST4ME View Drop Down
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Posts: 36758 		  Quote DST4ME Quote  Post ReplyReply bullet Posted: 25 Jun 2009 at 6:27pm
most people disable HT tho.

Nvidia Drivers----AMD Drivers
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 25 Jun 2009 at 6:37pm

OK, show me over 4.7Ghz 24/7 stable with HT off. Smile

Why have an i7 and turn HT off?
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Azrael35 View Drop Down
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Posts: 8 		  Quote Azrael35 Quote  Post ReplyReply bullet Posted: 25 Jun 2009 at 6:42pm
Right now its running at 3.7 and under load it never gets higher than 44c
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Azrael35 View Drop Down
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Posts: 8 		  Quote Azrael35 Quote  Post ReplyReply bullet Posted: 25 Jun 2009 at 6:43pm
Im running an asetek water cooling system. 
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Azrael35 View Drop Down
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Posts: 8 		  Quote Azrael35 Quote  Post ReplyReply bullet Posted: 25 Jun 2009 at 6:45pm
I can run 3dmark Vantage and play my games and everyhting at its current rate just fine. I got a vantage score of 36,301 at it set to performance. I know that i really dont need to overclock it its fast enough as is, i just figured Id like to get the most out of it. THanks for the help guys. 
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 25 Jun 2009 at 6:54pm
If you are running unstable then you will eventually corrupt your drive.
 
download Linx here, and tell me what your highest temp is.
 


Edited by justin.kerr - 25 Jun 2009 at 6:55pm
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Alex View Drop Down
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Posts: 16314 		  Quote Alex Quote  Post ReplyReply bullet Posted: 25 Jun 2009 at 7:12pm
HT off helps stable an overclock. HT is great, but, honestly, it's an extra four virtual cores, not an additional 4 physical cores.
 
If you out weigh the benefits of turning HT off to get a higher/stable overclock it's definitely worth turning it off.
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 25 Jun 2009 at 7:19pm

It just matters, if you can utilize all 8 threads, then I don't see why anyone would turn it off. If you can't utilize them then I guess. lol But like I said, I still don't see anything higher than 4.7 with HT off, unless someone wants to disable 3 cores also, then maybe. lol

usually it is only 100-200 Mhz difference in an OC by turning HT off.
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Azrael35 View Drop Down
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Posts: 8 		  Quote Azrael35 Quote  Post ReplyReply bullet Posted: 25 Jun 2009 at 10:20pm
Ok i ran the linX program and my temp never got higher than 44c
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Azrael35 View Drop Down
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Posts: 8 		  Quote Azrael35 Quote  Post ReplyReply bullet Posted: 25 Jun 2009 at 10:24pm
Do you guys think its reasonable that i could run my i7 975 at 4.4 to 4.8ghz 24/7? Or should i be happy with a stable 3.8? I really want to get the most out of my computer, lord knows it cost me a pretty penny.

Thanks again
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 26 Jun 2009 at 1:34am
Smile love to see a screen shot of that Linx run. Smile
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Azrael35 View Drop Down
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Posts: 8 		  Quote Azrael35 Quote  Post ReplyReply bullet Posted: 26 Jun 2009 at 2:41pm
Was i supposed to change the number of times it runs or something? 
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 26 Jun 2009 at 9:56pm
Originally posted by Azrael35

Was i supposed to change the number of times it runs or something? 
20 passes is fine for starters, set memory use to all.  what are you using to read your temps?

Edited by justin.kerr - 26 Jun 2009 at 9:57pm
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Azrael35 View Drop Down
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Posts: 8 		  Quote Azrael35 Quote  Post ReplyReply bullet Posted: 27 Jun 2009 at 1:42pm
Ok I ran it like you said (took all day at 11gigs) It got to 59c towards the end and teeter'd there. I used the real temp program i saw in your screenshot, Before i was using the nzxt display i purchased with the computer. 
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 27 Jun 2009 at 2:02pm
the nzxt does not show cpu temp, it matters who installed it, but it is impossible to put the probe on the IHS.
 
Can you post a screen shot of it? Please post Cpuz also.
http://cpuid.com/ download the 1.51 cpuz setup version.
 
 
60C is still very good temps. 


Edited by justin.kerr - 27 Jun 2009 at 2:03pm
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