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I7 930 overclock issue: Base clock keeps going down automatically

post #1 of 16
Thread Starter 
Hi,

I have an Intel i7 930 (2.8ghz) which I overclocked to 3.5ghz a couple of months ago(changed base clock to 160mhz and increased cpu voltage a little to 1.15000). It was running fine and stuff, till yesterday I ran CPU-Z and saw this:



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My clock had gone down to 133mhz, making the processor run at 2.9ghz! I checked by BIOS and while the AI tweaker tab still showed the CPU frequency set at 3.5mhz and bclk at 160mhz, the Advanced tab showed that the bclk was indeed at 133mhz and frequency at 2.9ghz, just like CPU-Z showed.

I then bumped up the clock from 160mhz to 165mhz (3.6ghz), restarted PC and checked CPU-Z then.



Uploaded with ImageShack.us

So the new overclock was working at 3.6ghz fine as it should. I turned my PC off for a bit and then checked CPU-Z again to see if the clock had gone down again and it hadn't.

Satisfied, I turned it off and went to sleep. Now this morning I ran CPU-Z and lo and behold... the clock was again back down to 133mhz @ 2.9ghz. I checked the BIOS and sure enough, AI tweaker tab still showed it at 3.6ghz with 165mhz bclk, while the Advanced tab showed it had gone down to 2.9ghz again with 133mhz bclk!

So could anyone tell me what's going on? Am I doing something wrong while overclocking or is this an issue with my processor/motherboard?

Also, if you notice the CPU-Z screenshots, you'll see that when my overclock automatically goes down to 2.9ghz, the CPU voltage goes up from 1.128v to 1.216v.

Any help on this confusing matter would be greatly appreciated. Thanks in advance.
Edited by Spk - 1/4/11 at 5:26am
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post #2 of 16
Are you sure you dont have EIST(Enhanced Intel SpeedStep) or similiar from bios settings on? Because there might be programs to keep cpu utilized and therefore showing you the "real" clock
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post #3 of 16
Quote:
Originally Posted by MiksuX View Post
Are you sure you dont have EIST(Enhanced Intel SpeedStep) or similiar from bios settings on? Because there might be programs to keep cpu utilized and therefore showing you the "real" clock
Pretty sure those features only modify the multiplier, not the actual bclk.
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post #4 of 16
Quote:
Originally Posted by OverTheBelow View Post
Pretty sure those features only modify the multiplier, not the actual bclk.
Tru, didnt come in mind in first place.

Still strange that voltages go up by clock decreases
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post #5 of 16
Thread Starter 
No, I don't have that Intel Enhanced Speed thingee in the BIOS enabled. And yeah, it's weird that my bclk decreases but voltage goes up automatically.

And again, my BIOS continues to show the overclocked settings. It's just CPU-Z and even Coretemp that show that I'm back down to 133mhz bclk. Really strange
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post #6 of 16
How about stock, does it sometimes go below it like overclocked goes below Ghz/mhz you set it be?
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post #7 of 16
Thread Starter 
Didn't really try it on stock. Could give it a go to see whether it automatically drops below 2.8ghz as well. I suppose I'll have to reset all BIOS settings to default?
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post #8 of 16
Can you tell us how you got these options set up?

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post #9 of 16
Thread Starter 
Quote:
Originally Posted by Yanki View Post
Can you tell us how you got these options set up?

Ok, I went into the BIOS to take some pics to show you (sorry about the crappy iPhone quality). Here they are. Also worth noting is that when I went into the advanced tab, even my BIOS now shows the bclk at 133mhz. So it's definitely not a problem with CPU-Z and something else is causing the bclk to keep dropping to 133mhz.



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Uploaded with ImageShack.us



Uploaded with ImageShack.us



Uploaded with ImageShack.us


To sum it up: I overclock to 165mhz clock speed, it works fine on 2.6ghz, even when I restart the pc or shut it off and then turn it back on, it stays put at 2.6mhz. But when I turn it off for the night and then back on in the morning (long break basically), the damn clock falls down to 133mhz for no apparent reason.

No, I don't have any other overclocking software or anything of that sort installed. I'm not doing anything special besides browsing the net, videos/music and world of warcraft.
Edited by Spk - 1/3/11 at 11:00pm
i7 Gaming Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 ASUS P6X58D-E XFX HD6950 3x2GB Corsair XMS3 (DDR3-1600) 
Hard DriveOSMonitorKeyboard
500gb WD + 1TB WD external Windows 7 x64 Dell ST2420L 24" Full HD LCD Logitech Media 
PowerCaseMouse
Cooler Master Silent Pro 600W Cooler Master HAF 922 Logitech G5 
  hide details  
Reply
i7 Gaming Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 ASUS P6X58D-E XFX HD6950 3x2GB Corsair XMS3 (DDR3-1600) 
Hard DriveOSMonitorKeyboard
500gb WD + 1TB WD external Windows 7 x64 Dell ST2420L 24" Full HD LCD Logitech Media 
PowerCaseMouse
Cooler Master Silent Pro 600W Cooler Master HAF 922 Logitech G5 
  hide details  
Reply
post #10 of 16
Thread Starter 
So does anyone have any thoughts on my overclocking settings? Am I not doing something right?

As you can see in the first pic, the Advanced tab is showing the frequency at 2.93ghz and bclk speed as 133mhz. Yet in the AI tweaker tab, the frequency is set at 165 mhz and it says on the top that Target CPU Frequency is 3630mhz.

Really weird. If I change the bclk to say, 166mhz, the system will overclock normally and stay that way, even when I reboot or turn off the system for a while and turn it back on. But if I turn it on after a long break (after sleep or work), the damn bclk goes back down to 133mhz, yet the AI tweaker tab will continue to show it set at the 166mhz I did.
i7 Gaming Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 ASUS P6X58D-E XFX HD6950 3x2GB Corsair XMS3 (DDR3-1600) 
Hard DriveOSMonitorKeyboard
500gb WD + 1TB WD external Windows 7 x64 Dell ST2420L 24" Full HD LCD Logitech Media 
PowerCaseMouse
Cooler Master Silent Pro 600W Cooler Master HAF 922 Logitech G5 
  hide details  
Reply
i7 Gaming Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 ASUS P6X58D-E XFX HD6950 3x2GB Corsair XMS3 (DDR3-1600) 
Hard DriveOSMonitorKeyboard
500gb WD + 1TB WD external Windows 7 x64 Dell ST2420L 24" Full HD LCD Logitech Media 
PowerCaseMouse
Cooler Master Silent Pro 600W Cooler Master HAF 922 Logitech G5 
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