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[Officia]l ASUS ROG Maximus IV GENE-Z68 & Z68(Gen3) Owners Club - Page 224

post #2231 of 7108
Quote:
Originally Posted by LA_Kings_Fan View Post
NOT A JOKE ... it's in the ASUS MaxIVGeneZ68 USERS GUIDE, Chapter 2 - Page 4, with an IMPORTANT FINGER on it ... "According to Intel CPU spec, DIMM voltage below 1.65v is recommended to protect the CPU."

InediblePi, to be honest ... as knowledgable as many guys here are, I don't think any of US are qualified to answer that for you here, and I doubt any of them will warranty or buy you a new MoBo if they give you the wrong info!
IMO I'd ask it over on ASUS ROG Forums and see what Raja@asus or Brian@asus has to say about it, before I'd trust anyone here. That's my !
On the next page with the supported memory and qualified vendors, most of the memory listed is 1.65v. Unless they don't expect everyone to run a SB-processor.

I'll give that a go.
Edited by InediblePi - 8/25/11 at 9:52pm
post #2232 of 7108
The biggest benefit to running ram that is low voltage is that it usually has higher headroom for overclocking the ram. But keep in mind the difference between 1600Mhz and 2133Mhz is very little unless you are benching. I run ram that is 1.25v at 1600Mhz because I water cool and I have very little air flow over the ram area and 1.25v ram runs pretty cool to the touch. As long as you keep it under 1.65v for 24/7 you should be fine. Obviously the lower you can run lower voltages the better you are off, but you never know, some guys run 1.65v all day long with no issues while guys at 1.5v have all type of issues. The other thing to consider is how good the memory controller on the chip is. If you have a 2500k with a lousy memory controller you may need more voltage to make it stable. Point is, there is no "set in stone" value except you shouldn't run over 1.65v for 24/7 since it is out of spec, but almost every thing we do here is out of spec.
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post #2233 of 7108
Can I join?

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post #2234 of 7108
I'm just gonna add a little bit to everything that's been said in response to InediblePi's questions:

1) The safe vcore for Sandy Bridge is a hot subject, but most people seem comfortable with 1.45v to 1.5v. I personally don't but to each his own. InediblePi: 1.368v for 4.5GHz is a little high but nothing to be worried about... i've seen people needing 1.34v for 4.3GHz before.

2) The safe ram voltage for Sandy Bridge has been interpreted as 1.5v with a 5% margin of error from Intel's Data Sheet. This means a maximum of 1.575v (or 1.58v for simplicity's sake). Many people report running 1.65v and over with no issues, but only time will tell. Sin0822: I respect your authority and expertise in this area, but I don't think LV ram is a "marketing ploy" when VDDQ is spelled out for us in Intel's Data Sheet. InediblePi: It's up to you, but you can run 1.65v ram at 1.5v if you feel comfortable adjusting ram timings.

3) InediblePi: There is no reason to run your BCLK over 100MHz for 24/7 overclocks. It may be necessary for extreme benchmarking and the like, but why run the risk of using 103 BCLK for a measly 135MHz? If you need more than 4.5GHz, use a x46 multi for 4.6GHz.
 
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post #2235 of 7108
Since the memory controller is in the CPU, sounds logical, that a higher RAM voltage means more heat on the CPU.

I think this is the main reason, why 1.5V is recommended. But since there is headroom for OC, and better cooling options too, you can run 1.65V too. Maybe its just a problem with higher TDP processors, where a memory controller running at 1.65V would cause exceeding the max TDP.
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post #2236 of 7108
Quote:
Originally Posted by LA_Kings_Fan View Post
I assume you need to use the website you linked because of being based in Australia, but not sure why you selected THAT memory ? I agree $130 for 8GB of RAM is TOO MUCH, even at the 7-8-7-24 lats, but it's also 1.6v and the User guide warns about going ABOVE 1.65v so if you OC that RAM you don't have much headroom do you ??? Personally from that site I'd go with one of these options ...

#1 = http://www.pccasegear.com/index.php?...ducts_id=16933 = 16GB Ripjaw X's 1600MHz 9-9-9-24, 1.5V @ $135.00 and it's RED

#2 = http://www.pccasegear.com/index.php?...ducts_id=17199 = 8 GB Snipers 1600MHz 9-9-9-24, 1.25V @ $75.00

#3 = http://www.pccasegear.com/index.php?...ducts_id=13931 = 8 GB Old Ripjaw's 1600MHz 9-9-9-24, 1.5V @ $69.00 in RED

#4 = http://www.pccasegear.com/index.php?...ducts_id=16510 = 8GB Ripjaw X's 1600MHz 9-9-9-24, 1.5V @ $65.00 in RED,
THIS is what ALOT of guys HERE are using

#5 = http://www.pccasegear.com/index.php?...ducts_id=18238 = 8GB Corsair Vengeance 1600MHz 8-8-8-24, 1.5V @ $99.00 in RED

#6 = http://www.pccasegear.com/index.php?...ducts_id=18096 = 8GB Corsair Vengeance 1600MHz 9-9-9-24, 1.5V @ $79.00 in RED,
THIS is what ALOT of guys HERE {including ME} are using

Hope that Helps, good luck
Thank you. Awesome help there.
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post #2237 of 7108
Quote:
Originally Posted by InediblePi View Post
I need some noob help guys. ];

I just got my Asus Maximus IV Gene-Z coupled with an i5-2500k processor! I have several questions to ask and they are worrying me deeply.

1. Is an OC of 4.5 GHz with a vcore of 1.368v safe? I know it might not be the most efficient, but I can't get it stable any other way.
Have you read around before asking? Just curious, I see you are new here. The fact is a few page back, I wrote again how to properly run 4.6 and it's extremly easy so prepare to be .

See here. I would recommend a BIOS reset first to remove all what you have done.
post #2238 of 7108
Is the auto overclocking thing safe? I read about a few people having problems after they used Asus's Auto tuning feature where it messed up with the BCLK and ram voltages.

I'm building a video editing workstation and I'ld want it to be very stable.

Would I get a more stable system manually overclocking it or would the Asus's auto overclocking be good enough?
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post #2239 of 7108
Quote:
Originally Posted by Rhialto View Post
Have you read around before asking? Just curious, I see you are new here. The fact is a few page back, I wrote again how to properly run 4.6 and it's extremly easy so prepare to be .

See here. I would recommend a BIOS reset first to remove all what you have done.
I've already tried that... I can barely get an overclock of 4.5 GHz stable with 1.368v on the VCore. The CPU level up for 4.6 in the BIOS only gives 1.35v. I simply just get a 101 BSOD.

And yes, I have looked around. ;P
post #2240 of 7108
Quote:
Originally Posted by tracingspirals View Post
Is the auto overclocking thing safe?
I don't know for the feature who automatically change the setting live but I do know that the single setting called Auto CPU Level is safe and is the easiest way to easily OC to either 4.2 or 4.6. Those are the only current 2 speed available under this setting.
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