ASUS P8P67 LE Overclock Issue

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pj-schmidt

Limp Gawd
Joined
Oct 12, 2004
Messages
356
Hi all,

I have an ASUS P8P67 LE that has an interesting overclock issue.

I can over clock to whatever speed I want easily. It will then run stable at that speed under P95 for ~3minutes, at which point the clock speed will slow to 3.4GHz for about 10 seconds. After that it will go back to my overclock speed for roughly one minute, and then drop back to 3.4GHz for ~30 seconds. This will continue with the time spent at overclock dropping and the time spent at standard clock increasing until it just stays at standard clock all of the time. P95 will run the entire time with no errors.

I am cooling my processor with a Corsair H50 that keeps my temps at ~55C with an 4.2Ghz OC under P95 load. The Asus AI utility shows the processor as using 97W under full load.

When I game, it will stay at OC for the entire time. But I want it to stay at full OC when I render video, which currently isn't happening.

I am using the most current BIOS from ASUS. For those who don't have the LE version of this board, it has a stripped down BIOS that doesn't have all of the options that the higher level boards do. Also, this board does not have the Digi+ vrm that all of the higher level P8P67 boards do.

Does anyone else have this board and have it stay OC'd under FULL load? I didn't catch this at first because I would see the processor jump to the OC speed when I started the test, but then I wouldn't monitor the actual speed while continuing the test.

I've tried what I think is about every setting in the bios to try to get this to stay at full OC, but nothing seems to make a difference. I really don't want to have to get a new board, just to hold a 24/7 OC.

Thanks for any input you might have.

~daPhoosa
 
From the way you phrase this, it sounds like you have speedstep on so that it'll drop down to lower frequencies at idle - is that correct?

If so, have you tried with speedstep and c1e disabled so that your CPU should always stay at your turbo settings, even at idle? Do you have all cores set to x42 (or whatever multi)?

At first impression I wanted to say it sounded like your cpu was throttling, but at 55C that doesn't sound right.

Edit: also, just for curiosity, what psu are you running and what voltage do you have the CPU at?
 
Tiporaro said:
From the way you phrase this, it sounds like you have speedstep on so that it'll drop down to lower frequencies at idle - is that correct?

If so, have you tried with speedstep and c1e disabled so that your CPU should always stay at your turbo settings, even at idle? Do you have all cores set to x42 (or whatever multi)?

At first impression I wanted to say it sounded like your cpu was throttling, but at 55C that doesn't sound right.

Edit: also, just for curiosity, what psu are you running and what voltage do you have the CPU at?
Click to expand...

Thanks for the reply Tiporaro.

The issue I am seeing exists regardless of how c1e and SpeedStep are set.
All cores are set the same.
The highest temp I've seen so far is 59c, but that could go a little higher if it wouldn't drop the OC.

I'm using an Antec 650W psu... I don't remember the exact model off hand.
At 4.2GHz, the Vcore is at 1.384v.

My processor is an 2600k, I meant to include that in the original post.

Turning off HT makes no difference.

Thanks again for any ideas.
 
Saw a post on overclock.net, some guy had the same issue you have and ended up just swapping boards for p8p67, i know thats not helpful but the LE board isnt really an OC board.
 
pj-schmidt said:
Hi all,

I have an ASUS P8P67 LE that has an interesting overclock issue.

I can over clock to whatever speed I want easily. It will then run stable at that speed under P95 for ~3minutes, at which point the clock speed will slow to 3.4GHz for about 10 seconds. After that it will go back to my overclock speed for roughly one minute, and then drop back to 3.4GHz for ~30 seconds. This will continue with the time spent at overclock dropping and the time spent at standard clock increasing until it just stays at standard clock all of the time. P95 will run the entire time with no errors.

I am cooling my processor with a Corsair H50 that keeps my temps at ~55C with an 4.2Ghz OC under P95 load. The Asus AI utility shows the processor as using 97W under full load.

When I game, it will stay at OC for the entire time. But I want it to stay at full OC when I render video, which currently isn't happening.

I am using the most current BIOS from ASUS. For those who don't have the LE version of this board, it has a stripped down BIOS that doesn't have all of the options that the higher level boards do. Also, this board does not have the Digi+ vrm that all of the higher level P8P67 boards do.

Does anyone else have this board and have it stay OC'd under FULL load? I didn't catch this at first because I would see the processor jump to the OC speed when I started the test, but then I wouldn't monitor the actual speed while continuing the test.

I've tried what I think is about every setting in the bios to try to get this to stay at full OC, but nothing seems to make a difference. I really don't want to have to get a new board, just to hold a 24/7 OC.

Thanks for any input you might have.

~daPhoosa
Click to expand...

I had the same issue with my LE board as well.

My only fix was a replacement Mobo, in this case the P8P67 Pro. Same bios revision, same bios settings. Just better power regulation
 
That board simply isn't good for overclocking. HAVING to use offsets instead of a fixed vcore is just bad, when you have to rely on the BIOS to make offsets work. Your only option is to either make sure windows 7 is set on full performance in the power options, update the BIOS and then clear the cmos rtc after updating. Then turn c1e, c3, and c6 and eist disabled.

If even that doesn't fix it, RMA the board and buy a better model with proper manual voltages. Or sell the board on ebay and get something better. Live and learn the hard way....
 
So, this is just a stab in the dark now, but I remember there being an option for something like intel thermal monitoring under the CPU section. Just saw it there the other day and I honestly don't know if it'd have any impact at all, but maybe worth trying?

When Im back at my desktop I'll look up what it's called and see if I can actually get some info on it.
 
Tiporaro said:
So, this is just a stab in the dark now, but I remember there being an option for something like intel thermal monitoring under the CPU section. Just saw it there the other day and I honestly don't know if it'd have any impact at all, but maybe worth trying?

When Im back at my desktop I'll look up what it's called and see if I can actually get some info on it.
Click to expand...

Tried that option. No luck.
 
Thanks all, for your input. I guess it's just a crappy board, I may just have to get a different model.

I really only wanted a small overclock, so I thought the cheaper board would work fine. Wrong.

Thanks again.

~daPhoosa
 
Intel Turbo Boost is limited by power consumption. This might not be adjustable in the bios on the lower end boards so turbo throttling like you are seeing is the result.

You can use ThrottleStop if you want an accurate look at what your CPU is doing. It should show you the Turbo power limit that your CPU and board are set to.

ThrottleStop 3.00
http://www.techinferno.com/downloads/?did=1
 
Picked up a P8P67 today and ditched the LE... Huge difference.

Over clock was easy and holds under full load.

Thanks for the help.

~daPhoosa
 
Glad to hear you're up and running, even if you didn't quite find out what was making it act screwy.
 
Tiporaro said:
Glad to hear you're up and running, even if you didn't quite find out what was making it act screwy.
Click to expand...

Thanks.

I'm pretty sure now that the issue is the cheap power components that the LE uses instead of the DIGI+ VRM that all of the other boards get. I'm pretty sure the vrm on the LE was over loading.

Now that I have control over the processor's voltage, I am running at 1.2v with a 4.2GHz OC. If I could have dropped the voltage that low on the LE, I think it would have held the OC as 1.2v seems to produce a ton less heat than 1.38v (and therefore is using less power).

The voltage control on the LE is total garbage. You can only adjust it in windows, and then it still seems to do what ever it wants anyways. It would be a great board for anyone who is not buying a K series processor. It was rock solid at stock speeds.

~daPhoosa
 
Wait, there really is no way to adjust the voltage on the LE outside of the windows programs? Nothing in the bios? if that's true, wow.

Edit: hm, looking into it really quickly it looks like certain bios versions for the le have offset voltage control (no manual) and others may actually have nothing at all (at least a few reports of that). In the former case, thats possibly still usable, just more difficult to tune. But in the latter, thats just ridiculous.
 
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