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[Solved] Adaptive Voltage vs XMP Profile, BCLK Freq.

frzburn
Level 8
I just received my RVE last Friday, and I've been fumbling with overclocking across the weekend. It's the first time I try overclocking, so I read a lot of stuff and watched hours of video over the last couple of weeks.

Over the weekend, I've come to an acceptable OC which I was satisfied with, using manual voltages. When all the stress tests passed, I tried to use the adaptive voltage... and that's when all hell broke loose. I lost HOURS trying to figure out was wouldn't work, try different things over and over again. Even using stock frequencies, it wouldn't POST when the only changes I would made from the "Optimized Defaults" were changing to XMP profile and trying to use adaptive voltages.

I finally found this:
http://rog.asus.com/forum/showthread.php?48992-Adaptive-voltages-and-per-core-multipliers-using-125-...

So if I want to take advantages of the XMP profiles of my memory, which automatically change the backstrap frequency to 125 MHz, I can't use Adaptive Voltage. That really sucks...

What do you suggest? Is it ok to keep a manual voltage of 1.280V constantly, 24/7?

Am I better to forget about XMP profiles, and drop back to 100 MHz BCLK and use Adaptive Voltage?



Please give me your advice.

Thanks
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8 REPLIES 8

frzburn
Level 8
Just for the record... Haven't checked back here for a while, but here's what works for me.

Using XMP profile, 127.3 BCLK x 34, I can use adaptive voltage using the offset parameter.

Initially, I had my system stable at 4328 MHz, fixed 1.200 Vcore and 1.190 V for the cache (27x cache ratio). I successfully ran stress tests using adaptive voltage, setting the OC Voltage to 1.000 and Offset Voltage to 0.200 V, for a total of 1.200V. However, during benchmarks, it goes a bit over that keeping it steady at 1.211 V.

At idle, CPU frequency is 1526 MHz and Vcore 0.944 V. Not as great a difference as when using adaptive voltage with 100 BCLK, but does the job for me! Helps keep the system cooler and quieter on light loads.

Hope this can help someone else!

frzburn wrote:
Just for the record... Haven't checked back here for a while, but here's what works for me.

Using XMP profile, 127.3 BCLK x 34, I can use adaptive voltage using the offset parameter.

Initially, I had my system stable at 4328 MHz, fixed 1.200 Vcore and 1.190 V for the cache (27x cache ratio). I successfully ran stress tests using adaptive voltage, setting the OC Voltage to 1.000 and Offset Voltage to 0.200 V, for a total of 1.200V. However, during benchmarks, it goes a bit over that keeping it steady at 1.211 V.

At idle, CPU frequency is 1526 MHz and Vcore 0.944 V. Not as great a difference as when using adaptive voltage with 100 BCLK, but does the job for me! Helps keep the system cooler and quieter on light loads.

Hope this can help someone else!


Hello

This is not adaptive voltage mode. With 0.20V offset applied it is no different than using straight offset. To use adaptive mode for the CPU the 100 strap is needed.

Praz wrote:
This is not adaptive voltage mode.

What do you mean? In the BIOS setup, there are four distinct options: auto, manual, adaptive, and offset. It's on adaptive.






In any case, no matter how you call it, it does what I expect it to.

frzburn wrote:
What do you mean? In the BIOS setup, there are four distinct options: auto, manual, adaptive, and offset. It's on adaptive.






In any case, no matter how you call it, it does what I expect it to.


Hello

Hopefully after Arne's post your expectations are more in line with reality. 🙂

Arne_Saknussemm
Level 40
Hmmm seems we missed this post! 😮

Glad you sorted out though and props for posting your solution.

What frequency RAM?

As an aside.....you can set XMP you know and then just copy timing values... and then set the RAM up manually yourself....can use 100 BCLK up to 3200 no problem

Damn, had I know that... 🙂

I'm using the stock frequency of my ram, 2800 MHz, with the XMP-2800 profile.

I'm not well versed into overclocking, so I thought I'd just leave it like that, but would I really get a noticeable performance gain?

Arne_Saknussemm
Level 40
Adaptive is not offset...just a terminology thing...and well, a difference in function. You don't have adaptive set...you have offset.

Adaptive applies voltage in turbo frequencies....offset applies throughout the VID range..idle clocks to turbo clocks. But yes, you are getting downclocking...

Adaptive cache does not work still as far as I know (Intel thing)..only offset

Ho, I see... Well, thanks for the comprehensive answer! 🙂