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i5 2500k crash blend test

post #1 of 6
Thread Starter 
Ok so here is the deal... I have a i5 2500k set to 1.35v is the BIOS with turbo multi at 46. It runs Prime95 small FFTs for an hour no problems, I just ran intel burn test 2.5 on extreme 8 passes, took 36 mins to finish passed. Bare in mind this was testing like 6500MB of ram... so I think just for fun I'll run prime95 blend for awhile, it crashes BSOD instantly. So I reboot and run it 2 more times and it crashes instantly again each time.

What gives? How can I run intel burn test on extreme and pass but not run prime95 blend for even a minute with getting a BSOD?

Dram volts were set to 1.5, i upped it to 1.535v to try to increase stability a bit didn't help. Its running at its rated clocks.

Turbo on
Cores = 46 multiplier
BCLK = 100
LLC = High
VCCIO = 1.00000
Internal PLL OV = disabled

To sum it all up. Is there a problem with my system or is prime95 messed up?
I'm not sure what to make of this really...
post #2 of 6
What error does the blue screen give you? If its 101 or 124 then chances are you need more vcore. You should take a look at the Sandy Stable Club on here. Some great guides that helped me get mine Prime stable. Link is in my sig.
post #3 of 6
Thread Starter 
Ok new question. I have decided to put off notions of 4.5-4.6 for now and have found a nice 4.3Ghz using offset voltage. I like this because its a decent OC in and of itself but keeps my processor from constantly having high volts run through it for no reason. Question is currently it seems fairly stable (will test more just be using computer) with my 1600mhz only drawing 0.976v. Is this safe for my chip? I have never heard of too lil voltage being bad as long as it isn't idle crashing but wanted to check as its a new to me.

idle volts = 0.976 at 1600mhz
load volts = 1.328 at 4300mhz
post #4 of 6
That's about where I'm at, I think my voltage is at 1.29 at 4.4GHz, it drops down to about 1.00v at 1.6GHz.

Undervoltage is dangerous I believe, but that range is normal, nothing wrong there.
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Hard DriveHard DriveOptical DriveCooling
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post #5 of 6
What can happen is that low voltage at idle can cause crashes, that can be funky to diagnose unless you know that. It's not an issue for everybody, but is fairly common.

Disabling C3/C6 in bios will prevent the low undervoltage.

Also...many consider the Intel Burn Test to not be a very good or thorough indicator for the SandyBridge chip. I haven't done the research, just parroting what I've read. The recommendation is almost always Prime95 blend for ~12 hours.
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post #6 of 6
Quote:
Originally Posted by Gojeran View Post
Ok so here is the deal... I have a i5 2500k set to 1.35v is the BIOS with turbo multi at 46. It runs Prime95 small FFTs for an hour no problems, I just ran intel burn test 2.5 on extreme 8 passes, took 36 mins to finish passed. Bare in mind this was testing like 6500MB of ram... so I think just for fun I'll run prime95 blend for awhile, it crashes BSOD instantly. So I reboot and run it 2 more times and it crashes instantly again each time.

What gives? How can I run intel burn test on extreme and pass but not run prime95 blend for even a minute with getting a BSOD?

Dram volts were set to 1.5, i upped it to 1.535v to try to increase stability a bit didn't help. Its running at its rated clocks.

Turbo on
Cores = 46 multiplier
BCLK = 100
LLC = High
VCCIO = 1.00000
Internal PLL OV = disabled

To sum it all up. Is there a problem with my system or is prime95 messed up?
I'm not sure what to make of this really...
Enable PLL and BSOD on Blend only means one thing - need more vcore.
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