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Stable O/C now unstable??

post #1 of 14
Thread Starter 
Sorry if i posted this in the wrong place, its my first time here.

I've filled out my system specs so you guys can possibly give me some insight as to why my o/c has recently start bluescreening me and even more recently i had to revert to stock setting to even boot.

I built this system about a year ago now, for the first 3 months of its life it was shut off everyday, but since i got a new job i have alot more time on my hands and basically its been running 24/7 for about 9-10 months now @ 3.8 GHZ, but recently its started randomly bluescreening and the message i saw as it flashed is "Memory mismatch" or "Memory Allocation Error". Since i originally thought it was my ram (which was never over-volted OR overclocked, it ran stock @ 2200 the whole time) so i switched it out with another DDR3 kit i have for trouble shooting and just in case, the same issue.

Even more recently it bluescreened on me in the middle of a raid and it refused to boot, reverted itself to stock so i loaded fail safe defaults to complete my raid and then went back to troubleshoot the issue but it now seems as if it will not boot if i take the cpu over 3.0, is there a cause or fix for this?

When i originally overclocked my pc i went about stabillity testing the best i could, i ran IBT for 50 cycles, and it said it was stable so i ran Prime95 for 22 hours with no issues, the voltage for the cpu was @ 1.275vcore which was as low as i could get it stably. I was sure to make sure my ram was never changed in the process (ive had too many sets of ram die on me from o/c).

Anyways if someone could possibly give me some insight as to why my system will no longer o/c past 3.0 i would be greatful.
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post #2 of 14
Were you using any XMP settings? What was the stock voltage on the RAM?

I doubt it's your CPU because you were running speed and volts well in the safe zone.

Memory at that high a speed probably uses ridiculously high voltage on stock.
post #3 of 14
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Quote:
Originally Posted by crazyap7 View Post
Were you using any XMP settings? What was the stock voltage on the RAM?

I doubt it's your CPU because you were running speed and volts well in the safe zone.

Memory at that high a speed probably uses ridiculously high voltage on stock.
I refused to use the XMP profile since it cranks the voltage to 1.85v which is far past what its specified for, i changed the Blk to 220 and the ram multiplier to 10x and manually set the voltage to its specified value of 1.50v since these are the values stated not only on the box but by the manufacturer themselves. The ram is designed to run cas7 @ 2200 1.5v
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post #4 of 14
Did you try adding slightly more voltage? 1.275v seems too little for a 3.8GHz OC on a 760. Perhaps 1.3v?
    
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post #5 of 14
Possibly a slight degrade on one of your OCed components
    
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post #6 of 14
0x101 = increase vcore
0x124 = increase/decrease vcore or QPI/VTT...have to test to see which one it is
0x0A = unstable RAM/IMC, increase QPI first, if that doesn't work increase vcore
0x1E = increase vcore, or lower RAM frequency/ increase RAM voltage
0x3B = increase vcore, or lower RAM frequency/ increase RAM voltage
0xD1 = QPI/VTT, increase/decrease as necessary
0x9C = QPI/VTT most likely, but increasing vcore has helped in some instances
0x50 = RAM timings/Frequency or uncore multi unstable, increase RAM voltage or adjust QPI/VTT, or lower uncore if you're higher than 2x
0x116 = Low IOH (NB) voltage, GPU issue (most common when running multi-GPU/overclocking GPU)
0x00000109 = Not enough or too Much memory voltage
0x7E = System Drivers issue
0x24 = Disk corruption (Did you OC the PCI-E bus?)
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post #7 of 14
Quote:
Originally Posted by Novaa View Post
I refused to use the XMP profile since it cranks the voltage to 1.85v which is far past what its specified for, i changed the Blk to 220 and the ram multiplier to 10x and manually set the voltage to its specified value of 1.50v since these are the values stated not only on the box but by the manufacturer themselves. The ram is designed to run cas7 @ 2200 1.5v
From what I'm reading the RAM is not rated for CAS7 (7-7-7-24) and is in fact 7-10-10-28. You may also need 1.65v, as far as I'm reading here. It's perfectly ok to use the XMP profile and manually set the voltages yourself. Most RAM will allow more voltage. An old pair of OCZ I had was rated for 1.9v, but OCZ told me to push 2.2v through it after I had problems which worked out for me.

Stock should be: 183*12 @1.65v
    
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post #8 of 14
Thread Starter 
Quote:
Originally Posted by Viridian View Post
Did you try adding slightly more voltage? 1.275v seems too little for a 3.8GHz OC on a 760. Perhaps 1.3v?
its a 750, and its been to 4.4 @ 1.345vcore, although i would never even try to run it at that on a H50 esp 24/7 since the idle temps are well into the high 40s and the load out is close to 90 which im not comfortable with.

i did start @ 1.3v @ 3.8 and worked my way back to as low as i could setting by setting with 30 cycles of IBT until it bluescreened then worked my way back up till it sat stable @ 30, then i increased to 50 cycles and then to 75 just to be sure. then i started my prime95 test to be 100% certain. its been set like that ever since.

Quote:
Originally Posted by tryagainplss View Post
Possibly a slight degrade on one of your OCed components
Thought about this idea, but is 12 months long enough for that to happen to this degree?
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post #9 of 14
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Quote:
Originally Posted by Viridian View Post
From what I'm reading the RAM is not rated for CAS7 (7-7-7-24) and is in fact 7-10-10-28. You may also need 1.65v, as far as I'm reading here. It's perfectly ok to use the XMP profile and manually set the voltages yourself. Most RAM will allow more voltage. An old pair of OCZ I had was rated for 1.9v, but OCZ told me to push 2.2v through it after I had problems which worked out for me.

Stock should be: 183*12 @1.65v
unfortunately, my board doesnt have a 12x multi if i use xmp it automatically changes my blk to 220 anyways. also the table printed on the box states 1.5v even under xmp settings, although i have already been and looked at settings online for these sticks and used the 1.65v, no dice. I also used a second set of Team elite sticks at stock settings, still bluescreened, same messages which leads me to asume its not the ram hence why im looking for an answer here
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post #10 of 14
Perhaps a bad PSU? How old is that PSU?
    
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