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***Official Ivybridge Overclock Thread***

I've not touched the voltages and just upped the multi to 44 on my 3770k.
4440MHz :L

Ram is just using the XMP profile @1866. Temps are all hovering 60c after 6hours of prime, doubt i'm gonna bother trying to find my max OC on this chip, 4.4Ghz is more than enough for me :P
 
Why can't you increase the base clock? I've got it increased to 102 and it's made me go from 4.5GHz to 4.6GHz perfectly stable at 1.28V currently. 46x isn't stable atm so it seems to have some benefit.
 
You can do some limited overclocking with BCLK and there's nothing wrong with using it to fill in the gaps between 100MHz multipliers.
 
Upping the bclk is a bad idea. So many other sensitve areas connected to it that increasing it can do some damage longterm. Stick to using the multi.
 
Zaphrod said:
Why not just use 100 bclk and 47 multiplier?
Click to expand...

46x doesn't work so I'm assuming 47x won't. Will try again tomorrow but will probably go back to 4.5Ghz for a 24/7. It's more than I need anyway.


IvanDobskey said:
Upping the bclk is a bad idea. So many other sensitve areas connected to it that increasing it can do some damage longterm. Stick to using the multi.
Click to expand...

Even by upping it by 2mhz?
 
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I'm now having problems with overclocking and I can't find the problem. When I go past 4.4GHz, CPUZ is showing that the frequency is being reduced for some reason. I've made sure that the 8 pin power cable is firmly in place, so that can't be it.

The only thing I can think of is that it happened after installing the two assist fans connected to my motherboard (z77 ASUS Sabertooth). I don't want to take them out now, because I had to remove the CPU heatsink just to get them on, but surely they can't be the problem?

Can anybody think of anything else it might be?
 
G-Sharp said:
I'm now having problems with overclocking and I can't find the problem. When I go past 4.4GHz, CPUZ is showing that the frequency is being reduced for some reason. I've made sure that the 8 pin power cable is firmly in place, so that can't be it.

The only thing I can think of is that it happened after installing the two assist fans connected to my motherboard (z77 ASUS Sabertooth). I don't want to take them out now, because I had to remove the CPU heatsink just to get them on, but surely they can't be the problem?

Can anybody think of anything else it might be?
Click to expand...

Speedstep? when you're not loading the CPU it'll drop the multiplier?
 
VaderDSL said:
Speedstep? when you're not loading the CPU it'll drop the multiplier?
Click to expand...

It happens when I use the blend test on full load. Say I OC to 4.6GHz, it loads to that frequency then quickly drops to 4.4GHz-4.3Ghz. I don't know whether I have accedently enabled an option in the ASUS AI suite which limits the amount of watts delivered to the CPU, but I don't know how this can be disabled?

I managed to diconnect the assist fans, but it ha not fixed the problem.
 
i have my i7 3770k with stock cooler and the temps went to 87 when i went to 4.0ghz i turned it down super quick after that..lol
 
Ok well I think my CPU is bedding in as the temps have dropped nearly 10 degrees from last night I am using a Noctua NH-D14. Which is good news!

Although my second core is running about 5-6 degrees hotter than all the others, I know a few others are getting this as well.

I have it running at 1.24v BLCK is 100 and multiplier is 44.

My temps are 72, 78, 75 and 73 across the cores which is quite good I think!
 
demon8991 said:
Ok well I think my CPU is bedding in as the temps have dropped nearly 10 degrees from last night I am using a Noctua NH-D14. Which is good news!

Although my second core is running about 5-6 degrees hotter than all the others, I know a few others are getting this as well.

I have it running at 1.24v BLCK is 100 and multiplier is 44.

My temps are 72, 78, 75 and 73 across the cores which is quite good I think!
Click to expand...

Which stress tet were you using and for how long?
 
demon8991 said:
Prime95 small FFT for around an hour, that sound good?
Click to expand...

I've been running the blend test at 4.6GHz - 1.3V for 20 minutes and it's maxing at 70 degrees so far. Is small FFT more stressful?

Following on from my problems with throttling when using the ASUS AI suite II, I have just now tried overclocking to 4.6GHz USING BIOS and the problem with throttling is no longer there. I may have done something using the ASUS software which is limiting the amount of power to the CPU. Does anyone know what it may be?
 
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