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z68xp-ud4 + 2600k - An oldie, but still kicking. Looking for tips in 2016!

post #1 of 7
Thread Starter 
Hey everyone,

I have a stubborn 2600K which has to be at 1.4v load to maintain 4.5ghz with my z68xp-ud4. The problem is (as anyone who has this board knows) vdroop is off the charts and compensating for it with LLC is a messy ordeal. In order to keep 1.4 (or 1.392v) under load I either have to use a very high LLC or a very high fixed voltage. This results in my idle voltages being 1.45v to 1.47v, or even higher with LLC spikes.

I am currently using bios revision F6 which is the latest other than the UEFI BIOS which doesn't include LLC at all.

Basically I am looking for people with extensive knowledge of this board to help get the voltages more stable. I'm using a NH-D15S and my temps are great, no issues there. I honestly don't even mind pumping over 1.4v under load for a higher overclock it's just I do not want idle temps to be that high.

I have not been successful with offset at all. I've gone up to +0.110 and still not stable, I'm honestly scared to go higher, and it still seems to fluctuate and droop too much for a stable OC.

So, for now I am biting the bullet and have an idle voltage of 1.47v and 1.4 volts under load to keep my OC rock solid. Yes, ouch, but honestly this chip is so old now and if it were to croak I'm willing to replace it (does the D15S work on the newer sockets? I hope so, it's an awesome air cooler)

So, z68xp-ud4 owners, lay down your knowledge! biggrin.gifthumb.gif
post #2 of 7
What is your VID on load? Using a negative offset with a good LLC may be a better option.
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post #3 of 7
Thread Starter 
Load is 1.4v give or take, never lower than 1.392v or 4.5ghz will crash. At full load VID in Cpu-Z is listed as 1.42v and CPU core is listed at 1.404. Idle jumps up to 1.47v and nothing I can do about it really if I want to keep 4.5ghz.

Unfortunately LLC is disabled when using offset. I read you can enable it using the Windows application but I do not like to rely on software for CPU overclocking. This board is a pita, I should of swapped it out back in the day but now it's not worth buying another board for my 2600K really... at the same time it's not worth it for me to upgrade to a newer processor yet either as the 2600K, especially at 4.5ghz or above, does just fine in almost everything I throw at it.

I just want moooooore. Especially because I have a Vive now and actually have applications that can push it other than audio rendering.
post #4 of 7
If you have 1.42 as the VID on load then it's a good idea to use a negative offset, something like -0.05v offset should put it down to around 1.37v and -0.10v would be 1.32v for example.
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post #5 of 7
Thread Starter 
Okay, the problem is DVID is only activated when Vcore is set to "Normal". Thus, I cannot set a vcore and use DVID (or LLC). I can only use DVID with the "stock" voltage for the speed I'm using.
post #6 of 7
Quote:
Originally Posted by Zerpy View Post

Okay, the problem is DVID is only activated when Vcore is set to "Normal". Thus, I cannot set a vcore and use DVID (or LLC). I can only use DVID with the "stock" voltage for the speed I'm using.
Was the same way on my board as well. Let's you choose one or the other, not both. It's best to set the vcore to standard and just use DVID to adjust the voltage using that. What is the stock voltage of your chip, 1.2 or 1.32? 1.42-1.47 isn't ideal but it won't kill your chip. I ran my 2500k at 1.52v for 3 years and my buddy is still using it at those settings. The z68 gigabyte boards were annoying.
post #7 of 7
The ASUS Z77 boards are also annoying. It seems like stabilizing the CPU voltage on sandy bridge is a pain to do.
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