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i7 clocks only running at a 1/4 of the speed. Help please

post #1 of 18
Thread Starter 
Okay. So I took on a little project last night, and I do not even know if this has anything to do with my problem, its just the last thing that changed before I had issues. I lapped my Heatsink and CPU to make a more even contact surface. Anyway I won't go into that much for now.

I put the PC back together like I have a hundred times. I was prompted before windows loaded that there was a checksum error and the defaults were loaded. No big deal seen this before. Sometimes it happens when hardware is removed and reinstalled. So I just booted into windows with the default BIOS settings. Once I get into windows I am excited to check on my temps so I load up CPU-Z, Real Temp, and Hardware monitor. Funny thing I noticed with CPU-Z was it was reading my processor (i7-950) at only about a 1/4 of the clock speed, around 500Mhz. Should be about 3.2Ghz at stock levels. I figured maybe it glitched and so I rebooted. Once back in windows it was loading the correct clock speeds, up until I went to stress test the CPU for temp read outs. It then scaled back the multiplier down from a x24 to about a x4-6. Why it is doing this I have no idea. It now does it before a stress test, usually when I just try to load applications to monitor system performance it scales its self back. It is not sitting very Hot at all, actually quite cool. I have attached a print screen of my temps and CPU-Z read out.

At this point the troubleshooting I have performed is: Reset the CMOS to load default settings, changed the multiplier to a x22 instead. Disabled turbo performance and Speed Step. I even reflashed my BIOS with the latest version again. Still the issue persists.

Please if there is any known reason why this is happening I am all ears. I hope lapping did not cause this, I really seriously doubt it. I would think if the processor is damaged I would see more indication.
post #2 of 18
Your operating system is controlling the multiplier on your CPU when it's not in use as a power saving mechanism. This can be turned off in the bios.

HOWEVER, that's horrendously unusual, as it should only clock you down to around 1.8 GHz or so. This 3x multiplier business is ridiculous. Even my laptop only downclocks to 900 MHz.

Pictures of the bios might be helfpul to rule things out at this point.
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post #3 of 18
woah, thats pretty strange.

my 960 and 980 only downclock to 1600MHz.

when you put load on it does it upclock?
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post #4 of 18
Thread Starter 
I will try to get some bios pics. To answer the other question. No it does not boost the clock when I put load on it. It stays virtually the same.
post #5 of 18
It must be broken. My 980x's minimum multiplier is 12x and base clock minimum is 100 (1200 bare minimum). Even taking into account the things that would lower the speed, it shouldn't go that low. Bad software?
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post #6 of 18
Thread Starter 
Its not the software I notice an definite performance decrease when it declocks its self. I did try to load up the CPU and the multiplier did actually change from 3 to 5. However that is not a default setting. I loaded the defaults and took some pics. See the attachments. Just an FYI too this has never happened and my power mode in the OS is set to high performance so it is not using a power saver mode. I have also disabled speed step which I thought was the setting that lowers the multiplier under idle usage. Could I possible have mis seated the chip. I did not necessary think that though because if the chip is mis seated it wouldn't detect all 8 threads and Id assume it wouldn't even boot.
post #7 of 18
Quote:
Originally Posted by Shotgun Pete;13063768 
It must be broken. My 980x's minimum multiplier is 12x and base clock minimum is 100 (1200 bare minimum). Even taking into account the things that would lower the speed, it shouldn't go that low. Bad software?

Yeah...unless you have actually keyed in a 3x multiplier to the bios (or other motherboard altering software like turboV), I can't think of any reasons why your multiplier wouldn't change. Try forcing a 19x multiplier or something along those lines and see if it boots that way.

If not...I fear the worst. frown.gif
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post #8 of 18
Thread Starter 
Ive Tried manually keying in 22x mult. I'll see what 19 does.
post #9 of 18
That's so consternating. Hard-coding a 23x multiplier in the bios, disabling speedstep and turbo mode, and it still boots to whatever multiplier it feels like? Aside from hard-coding 133MHz into the bclk instead of leaving it on auto, I'm not quite sure what else to test here.

We're running out of failure modes. Could lapping a CPU really JUST break the multiplier?headscratch.gif
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post #10 of 18
Thread Starter 
I had coded a x19 mulit with a bclock of 165 to bring it to near stock clock. Boosted the voltage a tad, turned of vdroop, turned of speed step.

It booted fine and took the settings. What is strange cupu-z detects it but soon after it scales down after about a 30 seconds after launching cpu-z.

i'll try the other suggested settings...
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Overclock.net › Forums › Intel › Intel - General › i7 clocks only running at a 1/4 of the speed. Help please