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In need of help overclocking a 3770K with H100i

post #1 of 15
Thread Starter 
Okay, I am fairly new to overclocking. I've read a few different guides. I've tried for hours. Most of the time leading to failed boots and I just really need some advice and this forum seems to be a good place to start. This is actually my first build!

First off lets start with the basics, My rig

Asus z77 Sabertooth
Intel I7 3770k (currently at 4.2ghz)
Corsair H100i
16Gb Ram
EVGA GTX 670 FTW (2 in SLI)
OCZ 120gb SSD
2TB HDD
Case: Thermaltake Chaser MK-I

Alright so first off what I have done,
I just use the auto overclocking tool in the UEFI Bios which gives me a Turbo Boost OC of 4.2Ghz when I run Prime 95 and my temps are around 67-70 degrees Celsius when I run Prime for about 20 minutes. Fans at Max on my H100i, monitoring temps with HWMonitor.
I was okay with that. I spent all last night trying to find a stable overclock for my 670s (still not having much luck but thats another thread later) so I decided to try and just change the multiplier to 43 (giving me about a 4.35ghz OC and my temps were around 71-73. I went to 45x in the Bios (around 4.6ghz) and my computer wouldn't even boot.
Alright, I tried looking around for numbers but can't get any details on why this would happen. I monitored my CPU with CPUZ and I realize that my voltages go to over 1.3v when using the 4.35 ghz. So I decided to manually lock my volts to 1.2 (to lower heat) and try the 4.5ghz overclock (which according to the back of the h100i box should run at under 50 degrees. Again, my computer freezes when trying to boot at the "Starting windows screen"

I am getting frustrated here. I see people with these 4.6-4.8 overclocks with the h100i and have no problems. I'm trying to figure out what I need to do to get that stable OC of at least 4.5ghz. Thats my goal.

If anyone can help me through a process of what to do (again total noob and this is my first build so please don't be too harsh) in order to try and reach those numbers/test my h100i to see if its faulty/figure out what I'm doing wrong to try and get this to work. I'm starting to do some video editing and the CPU will be under some loads as I intend to use it for game capture as well. So any help would be appreciated.

I'd be upset to know that I saved up for the h100i and waited for it to ship when the box is lying and these numbers aren't truly possible.

Also, my ambient temp is around 30 degrees.

Anyone help?

(Sorry for the long first post! I hope to get acquainted with the forums very soon!)
Eden
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Eden
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post #2 of 15
I would reset the BIOS defaults (to get rid of the settings the auto overclock tuner made) and then change the Turbo Multiplier to 44 (as a start) and the CPU Voltage to 1.3V. Then boot into Windows and run Prime95 or IntelBurnTest while watching the volts in CPU-Z and the temps in Coretemp or RealTemp. If you get crashes in the testing you'll need to increase the CPU Voltage a step at a time until you get it to run stable. You might also need to change the setting for LoadLine Calibration from Auto to something like Very High if you see the load voltage dropping significantly from what you set in the BIOS.

So in short, reset defaults, turbo multipliers to 44, CPU voltage to 1.3, LLC to Very High (if needed). Initially you are looking to keep the volts under 1.35V and the temps under 80C while testing.
post #3 of 15
Thread Starter 
Quote:
Originally Posted by Forceman View Post

I would reset the BIOS defaults (to get rid of the settings the auto overclock tuner made) and then change the Turbo Multiplier to 44 (as a start) and the CPU Voltage to 1.3V. Then boot into Windows and run Prime95 or IntelBurnTest while watching the volts in CPU-Z and the temps in Coretemp or RealTemp. If you get crashes in the testing you'll need to increase the CPU Voltage a step at a time until you get it to run stable. You might also need to change the setting for LoadLine Calibration from Auto to something like Very High if you see the load voltage dropping significantly from what you set in the BIOS.

So in short, reset defaults, turbo multipliers to 44, CPU voltage to 1.3, LLC to Very High (if needed). Initially you are looking to keep the volts under 1.35V and the temps under 80C while testing.

Okay, tried your suggestion, and this is what I got



This is with my H100i fans at Max (Running in Pull)

My ambient was around 30 at the start of the test. I just don't know how I can't get anywhere close to the numbers on the box. I know all the 3770k chips are different but this is ridiculous
Eden
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Eden
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post #4 of 15
Well, you aren't going to get 50C in Prime 95 even with a H100 (but normal use temps will be that low) but those seem a little hot. Is the pump plugged into a full speed fan header or a molex connector? You want to make sure it is running full speed. Was that the lowest stable voltage?
post #5 of 15
Thread Starter 
Quote:
Originally Posted by Forceman View Post

Well, you aren't going to get 50C in Prime 95 even with a H100 (but normal use temps will be that low) but those seem a little hot. Is the pump plugged into a full speed fan header or a molex connector? You want to make sure it is running full speed. Was that the lowest stable voltage?

It is running at 2174 RPM and is plugged to I believe the CPU fan header on my MB (Which according to Corsair Link is a 4 Pin).

I honestly don't remember the lowest stable voltage. I was never able to get the CPU Above 4.2ghz which is what the stock overclock on the Sabertooth using the OC Genie in the BIOS. From what I can remember it was somewhere in the 1.2-1.3 area. But then again I really can't remember. I really didn't start focusing on voltages until I started messing around with it.

I can try using OC Genie again (which overclock was stable albeit low) and running prime and giving you those numbers?
Eden
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Eden
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post #6 of 15
Thread Starter 
Alright

I decided (In order to show the last thing I had stable) to just re run the Asus OC function on the MB and show you the figures I end up with

This is idle (H100i fans at max)


This is with the OC done through the Sabertooth Z77 Bios (H100i fans still at Max) Prime 95 Running



Temps are good (maxing out at 67 but staying between 63-66 which is still kinda high for such a low over clock from what I've seen) but thats with low voltage. The voltage was fluctuating between 1.192 - 1.2v

I took this (as I said in my OP) and decided to try and raise the multiplier to 45 and lock the volts at 1.25 and couldn't even boot.
Edited by vkw619 - 2/7/13 at 10:10pm
Eden
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Eden
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post #7 of 15
The auto overclock always overclock the BCLK, which isn't the greatest idea in the world. You'll likely need more than 1.25V for 4.5,which is why it wouldn't boot. If you are stable at 4.5 with 1.3V then you can start reducing the volts until it becomes unstable.

Your temps are fine, by the way, just a little higher than you'd expect.
post #8 of 15
Thread Starter 
Quote:
Originally Posted by Forceman View Post

The auto overclock always overclock the BCLK, which isn't the greatest idea in the world. You'll likely need more than 1.25V for 4.5,which is why it wouldn't boot. If you are stable at 4.5 with 1.3V then you can start reducing the volts until it becomes unstable.

Your temps are fine, by the way, just a little higher than you'd expect.

Alright. So you think I should go stock again (Remove the auto OC), set 1.3v and 45x Multi, and check temps?

What temps should I expect to have? What temps are good/bad?

I've always been told/read that anything above 70 isn't good.

Will this still be a "Turbo" style OC? Where it will lower the Core speed when not necessary to save power/extend the life span?
Eden
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Eden
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post #9 of 15
That's what I would do, yes. The speed will go down at idle, but the voltage will remain the same as long as you are using a manual voltage. Once you get the overclock dialed in you can switch to offset so that'll drop also.

For temps anything below 80 is fine, and even higher is okay (you won't see those temps in normal use) but lower is better, of course.
post #10 of 15
Thread Starter 
Quote:
Originally Posted by Forceman View Post

That's what I would do, yes. The speed will go down at idle, but the voltage will remain the same as long as you are using a manual voltage. Once you get the overclock dialed in you can switch to offset so that'll drop also.

For temps anything below 80 is fine, and even higher is okay (you won't see those temps in normal use) but lower is better, of course.

Alright, did those steps and heres what I came up with.

Idle (Fans Maxed to keep everything the same as earlier)


(Note: the difference between Corsair Link CPU Temp and CPUID Temps? That normal? Its very apparent in the next pic)

And here it is under Prime 95 Load with the settings you suggested. I still want to know how they put a system under a 100% load with an H100i and didn't break 50 degrees. >_<<br />


Alright, few questions:

Thoughts on temps/volts?
Possible to get a stable 4.6-4.7 Overclock like this?
How exactly should I lower the voltage in order to reduce temps? What increments at a time should I do in order to test stability/ability to boot?
Edited by vkw619 - 2/7/13 at 11:12pm
Eden
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Eden
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OCZ Vertex 3 120GB SSD (Boot) Seagate 2TB 7200RPM (storage) MSI DVD Burner Corsair H110 
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