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2500k 4.5 to 5ghz help plz - Page 2

post #11 of 20
Thread Starter 
volatage at load is 1.472 and my LLC is at level 2.
i have a B3 board
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post #12 of 20
What is the minimum **Load** vcore that you need to do stress tests stability at 5 ghz?

Because, LLC2 is not good at 5 ghz..Vcore rise -->1.425v BIOS-->1.472v load is excessive.

If 1.472v is the MINIMUM load voltage required for stability with stress test (Prime 95, etc), and, for example, if 1.465v (Load) would cause BSOD, then you are at risk of "Idle / low load % BSOD" crashing.

example: Prime 95 1 thread/Linpack 1 thread might make vcore 1.440v only= BSOD possible.

LLC2 is only for people who "bench" test, not for 24/7.
If you are only benching, its fine but you need to find your minimum load vcore required for stability. So that way you won't be putting too much vcore into your CPU.

Example: if your CPU is stable at 1.450v load, and you want to do benchmark only, you can set BIOS to 1.410v, LLC2. <--benchmark only, not for 24/7 or normal use.

If you want 24/7 system, LLC2 is dangerous because to avoid IDLE/light load crash, (we use the same example: 1.450v lowest stable), you would have to use your setting of 1.425v BIOS 1.472 load. But you are putting extra vcore into your CPU, that is not good.

So a better setting for 24/7 (or normal) use is 1.5v BIOS, LLC1--and vdroop to 1.45v load. Now you have no "idle" crash and no "load" crash either.

Of course, IDEAL setting is LLC setting for BIOS voltage close to load voltage, (BIOS 1.46v load 1.45v) but this (ten different LLC settings for UD5 and Ud7) is still being worked on.
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post #13 of 20
Thread Starter 
i put in new values of 1.5v and got a load of 1.452 and it would jump up to 1.462 is this ok at the moment i have it set at 4.75ghz at 1.38 30 degrees and 1,356v load at 55 degrees should i just stick with this as it seems pretty safe.
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post #14 of 20
Thread Starter 
Quote:
Originally Posted by speedplz View Post
i put in new values of 1.5v and got a load of 1.452 and it would jump up to 1.462 is this ok at the moment i have it set at 4.75ghz at 1.38 30 degrees and 1,356v load at 55 degrees should i just stick with this as it seems pretty safe.
Both llc set to 1
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post #15 of 20
Quote:
Originally Posted by Falkentyne View Post
What is the minimum **Load** vcore that you need to do stress tests stability at 5 ghz?

Because, LLC2 is not good at 5 ghz..Vcore rise -->1.425v BIOS-->1.472v load is excessive.

If 1.472v is the MINIMUM load voltage required for stability with stress test (Prime 95, etc), and, for example, if 1.465v (Load) would cause BSOD, then you are at risk of "Idle / low load % BSOD" crashing.

example: Prime 95 1 thread/Linpack 1 thread might make vcore 1.440v only= BSOD possible.

LLC2 is only for people who "bench" test, not for 24/7.
If you are only benching, its fine but you need to find your minimum load vcore required for stability. So that way you won't be putting too much vcore into your CPU.

Example: if your CPU is stable at 1.450v load, and you want to do benchmark only, you can set BIOS to 1.410v, LLC2. <--benchmark only, not for 24/7 or normal use.

If you want 24/7 system, LLC2 is dangerous because to avoid IDLE/light load crash, (we use the same example: 1.450v lowest stable), you would have to use your setting of 1.425v BIOS 1.472 load. But you are putting extra vcore into your CPU, that is not good.

So a better setting for 24/7 (or normal) use is 1.5v BIOS, LLC1--and vdroop to 1.45v load. Now you have no "idle" crash and no "load" crash either.

Of course, IDEAL setting is LLC setting for BIOS voltage close to load voltage, (BIOS 1.46v load 1.45v) but this (ten different LLC settings for UD5 and Ud7) is still being worked on.
Thx for this help +1
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post #16 of 20
If you test it with a little Prime Blend, and you pass for an hour, play some games (especially battlefield bad company 2 and black ops) and see if you are still stable. If you are, then you are fine. And yes, LLC1 is definitely the way to go.

However, watch the temps. I personally would NOT stress test a CPU extensively at above 1.4v (i know others will disagree with me), because the chance of the CPU degrading are from average to very high (this may depend on VID of the CPU, too; low or high default VID chips often respond differently to voltage, although this is not a fixed rule). Some call it break in.

This definitely varies chip to chip, as someone had a 2500k that booted windows at 1.29v and 5 ghz on its first run, then on the very next boot (like 15 minutes later!), it needed 1.31v, then later, 1.33v. The chip stabilized later at 1.35v stable (not sure if this was bios or load voltages nor if this were LLC1 or LLC2)

My lower volt 2600k has degraded about 0.015v (from about 1.435v BIOS to 1.450v BIOS LLC1 for 5 ghz). Did two Prime tests about 50 minutes at 1.450v and then set it to 1.455v BIOS in profile (1.416v-1.428v load) and called it a day. Don't want to degrade my chip further. My 4.5 ghz setting is for 1.270v bios LLC1 (1.238v load), nice and stable.

My first high VID (but cooler running) 2600k degraded about 0.05v; needs about 1.5v for 5 ghz...giving that to a friend.

If you are going to use 1.46v average, please watch the temps! I would not recommend this for 24/7 unless you are using water cooling or a SS or Dice. Fine for some random high speed gaming, though; its better to use 4.5 ghz for a 24/7 setting and then crank it up higher when you need to show off
Edited by Falkentyne - 4/12/11 at 4:48am
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post #17 of 20
Thread Starter 
so guys think ive given up on 5ghz its scaring the S$%T out of me at the moment im running 4.8ghz with v at 1.368 load at 60 degrees i dont like priming but i will if it sticks for an hour should i keep this im happy to just stay at this level. my bios is 1.4 and norm temp is around 35. all i wanna know and sorry for the repeated questions im just so nervous is if it primes for 50 60 mins then i play crysis 2 and some COD BO and i dont blue it up i should be fine yeah? thank you so much everyone thats helped me out so far been amazingly helpfull and well best site ive signed up to in awhile thanks again.
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post #18 of 20
welcome, enjoy your stay.

and if dont do your prime blend, you are never going to stress your cpu hence you wont be able to find if you system is actually stable after overclocking hence while playing game or somthing you will get a BOSD which is bad.

there nothing to worry while doing prime95, only thing you need to be careful is your voltage at load does not go over 1.5V (which i think personally).

and temp (always keep your temperature less than 80 C or max 85 C) which is not a problem for you.

24/7 use i would say while prime95 running your temp should be around 70 - 75 C is good

good luck
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post #19 of 20
typically need 1.4-1.45V (load) for a 2500k to hit 5ghz for 12h prime blend

<= 85C is good enough for me.

seems you have water so i wouldn't mind going up to 1.525v (load) if needed for 5.1+ghz. but then again, i wouldn't mind buying another chip if i fried this one =)
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post #20 of 20
Quote:
Originally Posted by compudaze View Post
typically need 1.4-1.45V (load) for a 2500k to hit 5ghz for 12h prime blend

<= 85C is good enough for me.

seems you have water so i wouldn't mind going up to 1.525v (load) if needed for 5.1+ghz. but then again, i wouldn't mind buying another chip if i fried this one =)
hey even if you fry it, everyone has 3 yrs RMA rite ? so that wont be a problem, will it ?

can they find that its our fault if fried. thanks
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