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Can't OC to 4.5ghz

post #1 of 15
Thread Starter 
So I just built my computer (with the help of some awesome OC users) and I want to OC it to 4.5ghz (2600k HT). This are my current options on my 68p67 ASUS motherboard


Multiplier 43
Internal PLL Overvoltage: Disabled
CPU Voltage 1.35 (this seems a little high to me)
----------------
Core temps (MAX) after 50 mins of Prime5:
75 82 82 78

So as you see my temps are pretty high (compared to the guys in this thread and I don't wanna up the vcore without better temps. So what are your suggestions so I can achieve my goal of a 4.5 ghz stable build.

Here is a picture of my current cooling configuration:
its a corsair 800d case with the h70 cooler. I could get more fans for the case so i would greatly appreciate tips on which orientation to put them.

Consider the h70 2 fans a fix point since when i was installing it the screw hole gave in and now I'm using it 3 screws to hold the h70 and I don't wanna mess with it anymore

the dotted spaces are spaces for a fan. I have 3 free on top.

Any help would be GREATLY appreciated
    
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post #2 of 15
well low 80's do seem high for 1.35v. U positive there in a pull/push setup. U have a decent cooler. With those temps its not that bad, but I wouldnt OC any higher if your getting in the 80's, untill U can bring that down. Im OC at 4.5 for now and ran prime for 6 hours and was high 60's.
post #3 of 15
Those temps are too high for priming at 4.3ghz. I have no experience with the h70 but you should wait for someone who does to chime in before OC'ing any higher.
post #4 of 15
is your cooler tightly on with a good amount of paste? Your H70 should be able to easily handle your 2600k at that voltage
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post #5 of 15
Thread Starter 
I used some Artic Silver 5 for it. I removed the stock option because I messedthe stock up when I was installing it. I didn't apply much. Just a line as it said on the artic silver site. Do you think there is something wrong with those temps? Considering the case doesn't have much space to "breathe"
    
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post #6 of 15
Just a couple things I would look into:

A) Did you remove the old thermal paste completely before putting on the new As5?

B) Did you prime your As5 application by putting a little on both the block/heatsink and rubbing it in with either a paper towel/microfiber cloth? (It does make a difference for those that don't use As5.)

C) Have you checked your fans to make sure you have them blowing in the same direction on your H70? If you have your push fan blowing into another push fan, you're going to see very poor performance.

D) Have you made sure your H70 block is on really tight? If there is *any* air in between the block/cpu IHS you will see really poor temperatures.

E) Do you have your H70 plugged into a molex connector or via a fan header? If it is plugged into a fan header, your motherboard doesn't know it is a pump, not a fan and will throttle down the speed of the pump.

F) What are your ambients? If you have 40c ambients, you will have higher temperatures.

G) Can you please click on "user cp" at the top of the page and enter your system into the system specs? It makes it much easier for others to help you.

Hope this helps.
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post #7 of 15
Quote:
Originally Posted by HAF_wit View Post
Just a couple things I would look into:

A) Did you remove the old thermal paste completely before putting on the new As5?

B) Did you prime your As5 application by putting a little on both the block/heatsink and rubbing it in with either a paper towel/microfiber cloth? (It does make a difference for those that don't use As5.)

C) Have you checked your fans to make sure you have them blowing in the same direction on your H70? If you have your push fan blowing into another push fan, you're going to see very poor performance.

D) Have you made sure your H70 block is on really tight? If there is *any* air in between the block/cpu IHS you will see really poor temperatures.

E) Do you have your H70 plugged into a molex connector or via a fan header? If it is plugged into a fan header, your motherboard doesn't know it is a pump, not a fan and will throttle down the speed of the pump.

F) What are your ambients? If you have 40c ambients, you will have higher temperatures.

G) Can you please click on "user cp" at the top of the page and enter your system into the system specs? It makes it much easier for others to help you.

Hope this helps.
/thread
Excellent advice

Use 99% alcohol and a coffee filter or microfiber cloth to clean the surface of the CPU as well as the H70 block so they get nice and shiny (clean).

The 2600k and 2500k chips are tiny so make sure not to apply too much thermal paste, I've done it once and temps were terrible (6c higher than my best and current application).

I find a rice grain sized bit of thermal paste is perfect for my 2500k. I've tried quite a few different application methods including pea sized bob, line, x and I find the rice grain is the perfect amount. Coming from an AMD 965 quad core which had a bigger mating surface I had to downsize the ammount of tghermal paste I used by about 35% for a good application.
    
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post #8 of 15
Well sence your only using 3 screws you arent getting good presure on the cpu and thats why you arent getting good temps.
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post #9 of 15
Thread Starter 
Quote:
Originally Posted by Bal3Wolf View Post
Well sence your only using 3 screws you arent getting good presure on the cpu and thats why you arent getting good temps.
The 3 screws are on the push side of the h70 fan but you wre right that there wasn't enough pressure on the cpu.

I tightened the screws and after 40 mins of prime5 my max are 68 76 75 71

My room temperature is 24C or 75F
    
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post #10 of 15
Try and change your fans to exhaust.
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