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Overclocking noob, basic questions quick - Page 2

post #11 of 29
Thread Starter 
Quote:
Originally Posted by kope View Post

Right questions for one nob thumb.gif
I will call this an bad decision. This CPU thermal monitor is there to protect CPU from overheating. DO NOT TURN OFF THERMAL PROTECTION - (there is only one reason for that -> if you try to find out wot is max temperature for your CPU ) kookoo.gif
Any how welcome to OC jungle. There is no rules (except to be polite) and for the beginning just one advice - memorize max recommended temperature and max VCore for your CPU and whatever you do always monitor those with software like CPUz and Core temp. Those data you will find on intel.com
About those manuals -> if you do like I advice above fills free to test any of settings mentioned in those manuals. That's all about OC -> try and get conclusions - no one can help you with that thumb.gif

Thanks. Okay so I just ran with it and here is what I did. All I did was leave base clock to 33X and changed all the turbo clocks to 45X. So 4.5ghz. No voltage or anything else was messed with.

Running prime 95 right now. CPU-Z is showing it run at 4500 mhz so that's good. I forgot to mention i also had to change Turbo Power limit and core current limit to 200. before it was 95 and I believe it was holding it back cause my CPU would not go higher than 3.4ghz.

Anyway prime 95 custom test is doing fine. Going to do a blend test. Temps are at most 70 C. If it pases blend, i'll jus tkeep this setting. No need to get crazy haha


I am actually quite surprised that it can do 4.5 ghz out of the box. I mean the voltage is stock voltage at like 1.044 or 1.056.
Edited by kettlecorn - 12/3/12 at 10:55pm
post #12 of 29
Quote:
Originally Posted by kettlecorn View Post

Thanks. Okay so I just ran with it and here is what I did. All I did was leave base clock to 33X and changed all the turbo clocks to 45X. So 4.5ghz. No voltage or anything else was messed with.
Running prime 95 right now. CPU-Z is showing it run at 4500 mhz so that's good. I forgot to mention i also had to change Turbo Power limit and core current limit to 200. before it was 95 and I believe it was holding it back cause my CPU would not go higher than 3.4ghz.
Anyway prime 95 custom test is doing fine. Going to do a blend test. Temps are at most 70 C. If it pases blend, i'll jus tkeep this setting. No need to get crazy haha
I am actually quite surprised that it can do 4.5 ghz out of the box. I mean the voltage is stock voltage at like 1.044 or 1.056.
Ups! Blend test is with 1600MB of RAM - so start Prime95, select blend test and then click on custom, change amount of RAM to 90% of how much you have installed and run test.
Now there is big discussion about how much this test should be long. Definitely, should be at least 12h BUT! Running this test for about 1-2 hours with no problems at all it will give to you sign that you are weary near to ideal settings for your rig - if you pass 2 hours and there is no problems just continue to use your rig regularly and if happened something in future just increase a little VCore and that's it .
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post #13 of 29
Thread Starter 
Quote:
Originally Posted by kope View Post

Ups! Blend test is with 1600MB of RAM - so start Prime95, select blend test and then click on custom, change amount of RAM to 90% of how much you have installed and run test.
Now there is big discussion about how much this test should be long. Definitely, should be at least 12h BUT! Running this test for about 1-2 hours with no problems at all it will give to you sign that you are weary near to ideal settings for your rig - if you pass 2 hours and there is no problems just continue to use your rig regularly and if happened something in future just increase a little VCore and that's it .

Thanks.. So I think maybe 45min-1 hr in the temps are getting up to 79-80 and I shut it down. I have a hyper evo.. i thought these coolers were good? Maybe i need to reapply the thermal paste or something. I didnt even touch the stock voltage
post #14 of 29
Quote:
I didnt even touch the stock voltage
So wot is exactly your VCore???
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post #15 of 29
Quote:
Originally Posted by kettlecorn View Post

I'm new to overclocking but I'm starting to require it due to some Vmware I'm using and the processing it requires.
I bought a Hyper Evo 212. At idle it runs about 35-38 C @ stock frequency.
I just went into BIOS and changed the multiplier (Gigabyte z68 board) to 38X on my i5-2500k so I'm running 3.8ghz. Under load with my VMwares and browser, etc. the CPU usage is hovering around 50-75%. If I open up anything else, I'm sure it'll crash or something. Temps under this load is around 50-55 C.
Can I go higher?
is it possible to go 4.5ghz or something close to that with the Hyper Evo 212 air cooler? basically the simple guide to OC is to raise the frequency slowly, stress it and see if anything gets too hot or crashes. If crash, bump up the voltage and watch temps. And do this over and over until you find the max. Sound about right?
Can someone tell me what the i5-2500k + z68 board can handle pretty safely? I dont want to stress test all day so instead of finding "the max", Id like a good starting point to where it would be reasonably safe and a good number to start testing. 3.8? 4.2? 3.8 seems fine but no prime95 tested yet. Can I start it off at 4.2 with stock voltage or is that too ambitious?
Any help appreciated, ever overclocked before. Also, I'm guessing high 60c is the watch point for this CPU right?

3.8 ghz on a hyper 212+ is childs play, assuming your cooler is mounter correctly. Im on a hyper 212+ on a 2600k @ 4.5 ghz and it does not go above 70 c on prime 95, though I did change the paste and saw a 5 c difference. Intel processors are so easy to overclock, my advice would first see how high you can go at stock voltage, this should be somewhere around 4 ghz. From there you can increase your voltage and clocks. Another easy way to do this is just leave your voltage on auto and change the frequency. Then check you voltage in windows via cpuz, and you can adjust the voltage lower from there once you are in the ball park. On my comp, my auto voltage, and lowest manual voltage was so close together I just left it on auto. ALso make sure you keep your temps in check when you stress test this.
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post #16 of 29
Thread Starter 
Quote:
Originally Posted by IBooNI View Post

3.8 ghz on a hyper 212+ is childs play, assuming your cooler is mounter correctly. Im on a hyper 212+ on a 2600k @ 4.5 ghz and it does not go above 70 c on prime 95, though I did change the paste and saw a 5 c difference. Intel processors are so easy to overclock, my advice would first see how high you can go at stock voltage, this should be somewhere around 4 ghz. From there you can increase your voltage and clocks. Another easy way to do this is just leave your voltage on auto and change the frequency. Then check you voltage in windows via cpuz, and you can adjust the voltage lower from there once you are in the ball park. On my comp, my auto voltage, and lowest manual voltage was so close together I just left it on auto. ALso make sure you keep your temps in check when you stress test this.

Thanks. I actually got up to 4.5ghz no problem without bsod or otherwise with stock voltages. Just the clock to 45X. But right now having temp issues.. ran up to 80 in prime95's blend test. also have a hyper evo 212. i might need to re do the thermal paste cause my idles were around 38c-40c. That or something else is up. I have a vent in the case blowing the air out the top too.
post #17 of 29
Quote:
Originally Posted by kettlecorn View Post

Thanks. I actually got up to 4.5ghz no problem without bsod or otherwise with stock voltages. Just the clock to 45X. But right now having temp issues.. ran up to 80 in prime95's blend test. also have a hyper evo 212. i might need to re do the thermal paste cause my idles were around 38c-40c. That or something else is up. I have a vent in the case blowing the air out the top too.

I would recommend getting a better paste as I saw a 5c difference from that alone. Also keep in mind, prime 95 will be the MOST STRESSFUL thing it does, under normal usage your temps will be lower.
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post #18 of 29
Thread Starter 
Quote:
Originally Posted by IBooNI View Post

I would recommend getting a better paste as I saw a 5c difference from that alone. Also keep in mind, prime 95 will be the MOST STRESSFUL thing it does, under normal usage your temps will be lower.

Hey IBooNI, so I redid the paste. Arctic Silver 5. Thats what was on originally but I was told that you need to spread it so that the grooves between those copper tubes get filled, which I did not do last time.
Immediately off the bat, my idles were 5c cooler. Saw 32c which i never saw before. Before it was 38-40.

Right now I'm re-running prime95 and its been about 40 minutes.
Core 1 and 4is running cooler anywhere at 69C-73C. Core 2 is around 73-75c. Core 3 however is 76-78c.
I have yet to see 79c but I'm waiting to see if it goes up. It goes down to 75 sometimes as well.


When you read temps which numbers are you supposed to look at? I'm using core temp btw, not real temp.

Should I continue this test?? 77-78 is showing on core 3 for the majority of the time but the other cores are low to mid 70s.
post #19 of 29
From my understanding, these sensors are not perfectly accurate and are more of a way for the cpu to regulate itself if it get too hot, like reaching its max temp for example. So from what I have heard, it is more likely that the sensors are all slightly off a bit, more so than one of your cores being hotter than the others. I would pay more attention to what temp most of your cores are grouped around, for example one of my cores reads almost 10c higher than the rest. From your readings your cores are probably somewhere around 73 c, but even if it was 78 c is fine considering this is going to be the most stressful thing it will ever do, and the hottest it will ever get.

Now people will typically run for sometimes even 24 hours to test it, it will probably not get any hotter after around 10 mins or so, but that is not long enough to test its stability though. I would recommend running it over night whenever you get the chance just to check to see if it is stable.

So yes if you are testing for stability, continue the test, as 78 is fine, and I believe an off reading. It is more likely your core temps are around 73c considering your other 3 cores are around that temp.
Edited by IBooNI - 12/4/12 at 1:55am
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post #20 of 29
I have run 2 VM's with an 17-930 (a generation back from you) and did not see this utilization issue even at stock clocks or temp problems with the stock cooler.Yes I have hyperthreading. You do not yet get to the part where you are working the VM's before you yell "halt".Could it be that an overclock is not the answer for your situation? Perhaps you have selected the wrong cpu or your computer has too many items in the "start-up" folder.Strange to hear a story where the mighty 2 nd gen i7's are comming up short.

Since we talk about higher capacity HSF I am sure we are talking about a full on desktop rig.
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