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Should i push more?is it worth it?4.6-4.7ghz - Page 2

post #11 of 21
Don't really know what voltage is safe, but those using 1.4+ even high 1.4's have not had problems apparently. I'm still looking for more evidence on this question.

In Prime you can reach 85C and be fine with this chip. Under 70C is an extremely conservative temperature for Prime, but you do have to be sure you're using Small FFT as that will produce the max temps.

The thing is, at the most intense point in your normal use, you might be 10C lower than Prime, and that won't be 24/7 for most people... so its really silly to try to keep it below 70C in Prime when you have a chip that throttles at 98C and for all intents and purposes, can really handle the heat. For example I was 75C max in Prime and after gaming for 3 hours I hit a max of 58C, so there's a lot of overclocking room for you. A LOT.
Edited by donkrx - 8/15/11 at 5:16pm
    
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post #12 of 21
Quote:
Originally Posted by MIKEVALL View Post
Your temps are fine. Max voltage is 1.52v on the 2500k ( reminder the more voltage the more heat )

unless you really want to push it like 5ghz, your probably fine (just my opinoin)
According to intels specs sheet on the website max voltage is 1.52v, but i would not to go past 1.5v.

As far as temps goes i do not know, i've read somewhere the max temp is 72c, but i've seen many people getting 80's with those chips so...i'm a little confused.
post #13 of 21
Quote:
Originally Posted by Erick View Post
According to intels specs sheet on the website max voltage is 1.52v, but i would not to go past 1.5v.

As far as temps goes i do not know, i've read somewhere the max temp is 72c, but i've seen many people getting 80's with those chips so...i'm a little confused.
The temp of 72 you are referring to was probably the package temperature, or case temp, which is also called Tcase (72.6C for SB). This isn't really a very useful or good temperature limit to use though.

Sandy bridge max temp is supposed to be 98C and it throttles at 92-95C. If you're throttling, back it down... personally I've gotten up to 92/93C a couple times and haven't throttled, so I know I'm plenty fine when I sit around 78C max in Prime, 60s in games.
    
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post #14 of 21
Quote:
Originally Posted by donkrx View Post
The temp of 72 you are referring to was probably the package temperature, or case temp, which is also called Tcase (72.6C for SB). This isn't really a very useful or good temperature limit to use though.

Sandy bridge max temp is supposed to be 98C and it throttles at 92-95C. If you're throttling, back it down... personally I've gotten up to 92/93C a couple times and haven't throttled, so I know I'm plenty fine when I sit around 78C max in Prime, 60s in games.
Lol, Hyper 212+ and 1.47v voltage? What are your temperatures usually in games or max load?. That is really high voltage for 24/7 use.
post #15 of 21
Thread Starter 
im getting this at worker 4 "FATAL ERROR: Rounding was 0.4921875, expected less than 0.4. currently testing at 4.7 1.355v. i'm not sure whether its my ram i set my mem freq at 1866 as stated on my ram.volts at 1.5.. or should i lower my ram speed?or is my vcore needs more power?
    
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post #16 of 21
Quote:
Originally Posted by ProdigalGenius View Post
im getting this at worker 4 "FATAL ERROR: Rounding was 0.4921875, expected less than 0.4. currently testing at 4.7 1.355v. i'm not sure whether its my ram i set my mem freq at 1866 as stated on my ram.volts at 1.5.. or should i lower my ram speed?or is my vcore needs more power?
just set it to xmp and try again. If that doesn't work add a little more vcore.

Post your bios settings so we can have a look
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post #17 of 21
Quote:
Originally Posted by donkrx View Post
Don't really know what voltage is safe, but those using 1.4+ even high 1.4's have not had problems apparently. I'm still looking for more evidence on this question.
The maximum safe core voltage for 24/7 use is approximately 1.425V. Of course, you can use a higher voltage for 24/7 use, but just know that it's not 100% recommended. Many have already used a core voltage of about 1.6V for a little while just to see what would happen, and their chips are still working perfectly.


Quote:
Originally Posted by Erick View Post
According to intels specs sheet on the website max voltage is 1.52v, but i would not to go past 1.5v.

As far as temps goes i do not know, i've read somewhere the max temp is 72c, but i've seen many people getting 80's with those chips so...i'm a little confused.
72.6°C is the "tCase". The word "Case" here refers to the outside of the CPU: the same place where we apply thermal paste. So, it isn't the maximum safe core temperature. Instead, the maximum safe core temperature is closer to 98°C because that is the Tj. Max. The Tj. Max is the Thermaljunction Maximum, and it's the point where the CPU should either throttle itself down or turn itself off to prevent damage from the heat. After all 98°C is 208.4°F.


Quote:
Originally Posted by ProdigalGenius View Post
im getting this at worker 4 "FATAL ERROR: Rounding was 0.4921875, expected less than 0.4. currently testing at 4.7 1.355v. i'm not sure whether its my ram i set my mem freq at 1866 as stated on my ram.volts at 1.5.. or should i lower my ram speed?or is my vcore needs more power?
I recommend just increasing the core voltage. That's a low voltage for 4.7GHz.

What does CPU-Z say your core voltage is during a Prime95 test?
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post #18 of 21
Quote:
Originally Posted by TwoCables View Post
The maximum safe core voltage for 24/7 use is approximately 1.425V. Of course, you can use a higher voltage for 24/7 use, but just know that it's not 100% recommended. Many have already used a core voltage of about 1.6V for a little while just to see what would happen, and their chips are still working perfectly.
These cpu's are actually quite resilient, I've run 1.7v through mine and im still running my chip perfectly fine, however the resilience obviously varies from cpu's being different from one another, with that said I think a much higher vcore rate can be used depending on how well your CPU reacts to it and your cooling. I still stand by 1.4/1.45 for air and upto 1.5v for watercooling for 24/7.

This is what I think in regards to voltage and temps for SB:



No one is absolutely certain of what the safe vcore is for the new sandybridge chips. What I can tell you is that many say the max safe vcore for these chips are 1.3 region, however, intel states that the max 'VID' is 1.52 and many say that around 1.4 if your on air and 1.45 should be the max if your running water cooling. Personally I will not go above 1.5v for 24/7 with these chip but that is totally upto you. The main thing to understand is that 'YOU' have to come up with the conclusion of what the max is. That way no one is blamed if the chip degrades (none reported so far, even with so called 'high 1.4+ vcore')

Regarding temps, CPU throttles at 95c, some say keeping it below 85c is good, some say keeping it below 80 is better, other's say below 75c is really good and there are quite a few that say 70c should be the max. Which ever one your comfortable with and if you have substantial cooling, YOU DECIDE YOUR MAX, just remember it throttles at 95c. If for example you hit 85c in stress testing then in everday usage it shouldn't be higher than 75c which I think is fine, I personally like to keep mine below 70c
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post #19 of 21
Quote:
Originally Posted by ProdigalGenius View Post
currently i'm running at 4.5ghz w 1.305 idle temp:20c prime95temp:45-50C room temp 25c
i was wondering if it is worth pushing the cpu more to 4.6-4.8 with higher vcore ofc.. what is the idle max voltage for i5 2500k? 1.35? and temp? 70c?(with prime95)

thanks in advance.
Are you using AI Suit II to monitor your temps? Your CPU temps aren't going to be less than ambient on air. I suggest you try HWMonitor or Real Temps.
Edited by nezzarix - 8/16/11 at 2:19pm
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post #20 of 21
Whoa, good call nezzarix.

Real Temp 3.67 is what should be used to monitor Sandy Bridge temps and nothing else.

http://www.overclockers.com/forums/s...d.php?t=667250


You can use Core Temp 0.99.8 too. Although, I recommend Real Temp 3.67 over Core Temp 0.99.8 just for the interface and options alone.
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