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Intel Burn & Prime95 i5 2500k

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August 3, 2011 8:35:43 PM

I tested i5 2500k on 4.5GHz with 1.33v with Intel Burn setting to "high" ran 5 times.

It was all good and rock solid. But when I jumped to Prime95, blend mode, it didnt last 1 min.

Why?


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a b à CPUs
a b K Overclocking
August 3, 2011 8:58:36 PM

probably cos prime 95 is a tougher test than intel burn

try dropping it to 4.4ghz and see what happens not all 2500k will run 4.5ghz

is it important to pass prime 95 stress testing? as far as i am concerned if my overclock never blue screens or shuts down during heavy gaming -video encoding and running loads of programs at once then its stable

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August 3, 2011 9:12:14 PM

Your voltage is set awfully high, don't you think?
I agree with mcnumpty for the most part, if you can do everything that you normally do without BSOD, I'd say you're stable.
Although, it doesn't hurt to be able to pass Prime95 stress tests (more peace of mind I'd say).
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a c 139 à CPUs
a c 242 K Overclocking
August 4, 2011 3:21:53 AM

Quote:
I tested i5 2500k on 4.5GHz with 1.33v with Intel Burn setting to "high" ran 5 times.
It was all good and rock solid. But when I jumped to Prime95, blend mode, it didnt last 1 min.


Try IBT at 20 time set maximum RAM what happen ?
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August 4, 2011 4:27:18 AM

I tried IBT at maximum RAM, and it last for 16 mins then BSOD.

???
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a c 139 à CPUs
a c 242 K Overclocking
August 4, 2011 4:28:24 AM

ya ... it means not stable .. minimal stable ran at 20times set maximum RAM
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August 4, 2011 4:32:34 AM

what should I change now? Im using Sabertooth.
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a c 139 à CPUs
a c 242 K Overclocking
August 4, 2011 4:33:56 AM

it depend on BSOD massage .. like 0x000000124 or anything
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August 4, 2011 4:34:31 AM

yes 0x00000000124
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August 4, 2011 4:36:30 AM

Vcore 1.33, CPU PLL 1.8125, RAM at 1.50v as deault, LLC ultra high.
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a c 139 à CPUs
a c 242 K Overclocking
August 4, 2011 4:36:56 AM

raise small PLL or vcore ..? may be total cpu voltage at 1.35 and increase VDIM at arround 1.58 - 1.6
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August 4, 2011 4:41:27 AM

btw what pc are u using now?
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a c 139 à CPUs
a c 242 K Overclocking
August 4, 2011 4:47:11 AM

for now my rig is Pentium dual core ... no OC for internet . :D  ( I always re-sell the rig after I felt the greatness) sorry it's Off topic
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August 4, 2011 4:48:11 AM

Do you sell em on ebay or any place you use to ?
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a c 139 à CPUs
a c 242 K Overclocking
August 4, 2011 4:49:21 AM

I sell to friends fellow overcloker, not through ebay or newegg
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a b à CPUs
a b K Overclocking
August 4, 2011 12:40:18 PM

Your vcore does seem fairly low. I think people say anything upto 1.5 on sandy bridge is ok but DO NOT go past that point.

Somewhere around 1.38/1.4 should be a nice vcore to achieve 4.5GHz OC.

Personally my ASUS P8Z68-v PRO is running i5-2500k @ 4.4GHz with max recorded vcore of 1.36.
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August 4, 2011 4:02:48 PM

Since we both use Asus board, there are some tips to share together.

I always use Ultra High LLC which is the best setting improving vdrop.

Second, is VRM Spread Spectrum useful ?

VRM frequency need to set Auto or enble?

CPU current capability Auto or higher?

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a b à CPUs
a b K Overclocking
August 4, 2011 7:28:05 PM

Ive used ASUS Suite to auto-tune.

Didn't intend to overclock my build since there seemed no real need, but since the motherboard was prepared to do it for me, i let it do its thing :) 
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August 4, 2011 9:55:55 PM

Best answer selected by TheGameCPT.
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