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Weird crash after overclock

noclevername

noclevername

Gawd
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Feb 22, 2016
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Recently did my first overclock. Everything appeared to be stable after stress testing, but yesterday while multitasking got the new Windows 10 BSOD. Any idea what it might be? I think it might be ram issue more than stability issues.

Crash happened at 4.6ghz dropped to 4.5ghz holding stable right now. Running games fine, but when I had chrome, photoshop, music playing, folders open, moving around between all the windows I got the crash report.

Regularly in 30-40c range on idle and basic tasks on cpu across all 4 cores. When in game or stress testing hanging around 50-60c.

Board: GIGABYTE GA-Z68X-UD4-B3
CPU: I5 2500k @ 4.5ghz 1.35v Load Step 7
CPU Cooler: LEPA 240mm AIO
Ram: 16GB (4-4gb) Crucial Balistic Tactical Tracer 1.55V 9-9-9-27
GPU: Raedon Sapphire 7970

Stress tests ran:
2 hours of Asus Realbench
30 minutes of Prime95 blend test
1 hour of OCCT
 
When I had my 2500K system it did the same thing.
It was running 24x7 and was stable under load at all times but would occasionally BSD at idle.
The cure was higher vcore (without turning off power saving features).

Reading up on it the issue was, when there was a momentary load, as the cpu speed increased from a low power state, the voltage also had to increase.
It sometimes wasnt quite fast enough and the higher clock speed was met with insufficient voltage at the moment it changed.
Higher voltage works because the voltage ramps up a bit higher in the same time frame.

There may be options in your bios to help the voltage ramp up earlier which might mean you wont need higher voltage.
Such options werent present on my P67a board.
 
Nenu said:
When I had my 2500K system it did the same thing.
It was running 24x7 and was stable under load at all times but would occasionally BSD at idle.
The cure was higher vcore (without turning off power saving features).

Reading up on it the issue was, when there was a momentary load, as the cpu speed increased from a low power state, the voltage also had to increase.
It sometimes wasnt quite fast enough and the higher clock speed was met with insufficient voltage at the moment it changed.
Higher voltage works because the voltage ramps up a bit higher in the same time frame.

There may be options in your bios to help the voltage ramp up earlier which might mean you wont need higher voltage.
Such options werent present on my P67a board.
Click to expand...


What do you have your VCore set at? Mine is 1.35v and steps up to 1.4-1.42 under a strong load. Also my RAM voltage is at 1.55v due to the fact my ram has LEDs on the heatsinks. My ram is running the XMP profile as well. So far when I dropped from 4.6Ghz to 4.5Ghz I haven't seen a lock up or BSOD while duplicating what happened when it crashed.
 

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My voltage was similar but this isnt relevant. You need to tune your system independently.
I wouldnt go any higher on the voltage unless you have very good cooling.

I expect reducing the overclock to help because the voltage rise time doesnt need to be so fast at lower speed.
If you havent got any options to assist with voltage rise time for vcore then 4.5GHz may be your limit.
 
Nenu said:
My voltage was similar but this isnt relevant. You need to tune your system independently.
I wouldnt go any higher on the voltage unless you have very good cooling.

I expect reducing the overclock to help because the voltage rise time doesnt need to be so fast at lower speed.
If you havent got any options to assist with voltage rise time for vcore then 4.5GHz may be your limit.
Click to expand...

Thank you. I am just gonna drop the clock and voltage down a little see how it goes. I haven't had any major issue, just some a few crashes total.
 
For stability testing, you should probably hit closer to an 8 hour benchmark instead of a 2.
 
GioG said:
For stability testing, you should probably hit closer to an 8 hour benchmark instead of a 2.
Click to expand...

I will keep that in mind. I am going to RMA my ram to see if that helps first. My friend who I got it from had to RMA the tactical tracers once before for same issues. He is going to RMA the set and ask they back the ones that don't have the LED's on the heat sinks. When I get it back I will stress test for longer times. Thank you :)
 
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