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Killing_Halo

How high of Vcore is too high... i know its opinion but.

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hey with this new water cooling set up im able to get about a extra 100-150 mhz stable by raising the vcore. Right now while runnning OCCT i have it at 1.7= maxed and temps arent breaking over 40C via MBM 5. What can i look forward to if keeping this high of a vcore? should i try to tone it down to the 1.6 area? just curious

 

Thx in advance

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There is a debate over hardforum...basically, by increasing the vcore, but keeping the opterational temp down, you are decreasing the lifespan of the processor. However, the amount is not much considering what amd planned for these processors and how long we actually use them. Someone actually did an extensive study and found that at moderately high temp (near the max of what amd recommends, 60C) with vcore around 1.6-1.7V, a core that is rated to run at 1.35 and around 40C would have a lifespan of 13000 hours...That is at full load...13000 hours at 100% load is a long time. So, if you are to use these things for 12 hours a day, with 1/2 of that time at full load, then that means, you will have above 2000 days, around 6 years....

Most of us don't even keep these things for more than 2 or 3 years...so based on these calculations, as long as you don't run it at 70C under load, chances are, you will sell/trade/give/throw away these things before their lifespan is over.

From personal experience, I have own cpus since the early 90s and I have overclocked each on to its max, running them at their max allowed vcore...Well, I have not had one died on me.

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I appreciate the info any idea where i can find that study? Just curious

But yeah 40c is well under the max allowed temp. Any more opinons info would be great

 

Also with LDT voltage? anyone adjusting this at all to get stable?

I've heard yeah bump it up others say its pointless.?

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in my humble opinion anything over 50 is already pushing it, 60 on and uh oh, its time to really figure out what the problem is and fix it, given most bioses give a temp alarm figure starting out near the low 60s on just about every board I have seen these days, I have made it a point to try and keep anything of mine below 50, ymmv

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Also with LDT voltage? anyone adjusting this at all to get stable?I've heard yeah bump it up others say its pointless.?

 

I always max it, I see no reason not to.

 

I'm currently running my chipset at max as well, mostly because I'm trying to cure the new ceramique under my waterblock on it but also because i'm interested to see how much (if any) it helps in terms of overclocks.

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Im noticing that alot of ppl are having trouble with their x2 4800's getting to 2.8GHz wow.. thought alot of 4800's were getting higher .. glad i went with a 4200 and hitting 2.8 just fine and stable just dropping it to 2.75 with only a 150.00 dollar water cooling kit.

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heh, my CPU at 1.7v would only last about 1.5 yrs according to this cause I run dual cores 100% 24/7... lol!! :shake:

 

There is a debate over hardforum...basically, by increasing the vcore, but keeping the opterational temp down, you are decreasing the lifespan of the processor. However, the amount is not much considering what amd planned for these processors and how long we actually use them. Someone actually did an extensive study and found that at moderately high temp (near the max of what amd recommends, 60C) with vcore around 1.6-1.7V, a core that is rated to run at 1.35 and around 40C would have a lifespan of 13000 hours...That is at full load...13000 hours at 100% load is a long time. So, if you are to use these things for 12 hours a day, with 1/2 of that time at full load, then that means, you will have above 2000 days, around 6 years....

Most of us don't even keep these things for more than 2 or 3 years...so based on these calculations, as long as you don't run it at 70C under load, chances are, you will sell/trade/give/throw away these things before their lifespan is over.

From personal experience, I have own cpus since the early 90s and I have overclocked each on to its max, running them at their max allowed vcore...Well, I have not had one died on me.

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Im noticing that alot of ppl are having trouble with their x2 4800's getting to 2.8GHz wow.. thought alot of 4800's were getting higher .. glad i went with a 4200 and hitting 2.8 just fine and stable just dropping it to 2.75 with only a 150.00 dollar water cooling kit.

 

Yea, most 4800s aren't reallt all that great at ovrclocking. Some really do very well thoughm saw one guy under phase at 3.5...

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1.7v is extreme IMHO for any dual core but to each his own

 

I bet it still lasts 3yrs at 1.7v

 

I think we understimate these chips...especially opterons intended for server market where they expect reliability..period

 

Not sure but do you think IT people watch server temps as much as an overclocker does??

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Slightly off topic, but I am curios about what people's opinions are on Cool & Quiet regarding longevity of processors. Namely, if vcore is set to 1.6-1.7v or more, but gets throttled down to say 1.22 via C&Q for 90% of the time, and the system is running 24/7. Is there any research that shows if this will increase lifespan, or is it possible that ramping up and down to and from extremely high voltages would be worse than running constant?

 

Sidenote: C&Q voltage adjustment is only possible when VID is set to Auto, and C&Q dynamic underclocking is only possible when multi is set to default (max) for whatever CPU it is.

 

Cheers!

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Using C&Q doesn't bode well for any overclocked machine - basically because all your settings were tweaks to get it to that point. If you never have an intention to overclock then I'm sure it works just fine, but if your motherboard is constantly having to drastically change the voltage applied to the processor you might burn out some of the power regulators on the board.

 

Also C&Q probably isn't optimized for a processor running at 2.8GHz ro thereabouts, it might not throttle down the speed enough when it drops the voltage thus making your system unstable.

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