ASUS Rampage IV Extreme - UEFI Guide for Overclocking

[Dartmaulhunt]

I have the same memory but 4x2Go at 10-12-11-28 1T (1.65v)

But I am "217" (not 128)

You are in Auto or you used a profile? Hynix?
You're also at 1.65v?

Thanks

No, all the timings I've post were set manually.
Keep in mind, I'm still working on it, can't say for sure that these are optimal or even 100% stable!
So here are the setting:

DRAM freq - 2400MHz
DRAM - 1.70v (I think that 1.65v would also be ok)
VTTDRAM - 0.865v
VCCSA - 1.350v
VTT CPU - 1.350v
CPU PPL - 1.865v
DRAM Current capability - 130%

(Actually not sure about VCCSA and VTT CPU voltages, haven't understand their impact jet, there was no such settings on x58 chipset (there was uncore only))

I also use extreme mem power phase and forced 450Khz voltage frequency.

BTW Ripjaws memory has 2T Command Rate in all XMP profiles, I guess you should set it so.

[Dartmaul]

Few days ago I found out that one of the reasons making OC'ed CPU to throttle on full load is VRM (mosfet) overheat.
I've successfully solved this problem by putting an additions fan on the mosfet radiator, but this is not the most "graceful" solution.
Does Rampage 4 Extreme really has such bad stock VRM cooling or I've just loaded it too much?
Maybe it's not serious and I can just turn the VRM overheat protection off?

[Luumi]

Hello.
I was just wondering if it's safe to run VTT and VCCSA voltages at 1.350V 24/7. I got a hardware error in Aida64 when I tried to run my 3930k at 4.8ghz and when I tried lowering my VCCSA to 1.3V i got a bluescreen 50 after 2 minutes in Aida stablity test so I guess that was the reason. I have been trying to stay within Intel's recommended Vcore value, but sometimes the Vcore drops below the VCCSA underload and I think that may cause instability.

[Raja@ASUS]

Hello.
I was just wondering if it's safe to run VTT and VCCSA voltages at 1.350V 24/7. I got a hardware error in Aida64 when I tried to run my 3930k at 4.8ghz and when I tried lowering my VCCSA to 1.3V i got a bluescreen 50 after 2 minutes in Aida stablity test so I guess that was the reason. I have been trying to stay within Intel's recommended Vcore value, but sometimes the Vcore drops below the VCCSA underload and I think that may cause instability.

Nobody has any long term data to confirm what is safe and what is not. If you are concerned, perhaps lower the overclock a bit.

As for Intel's safe values, they are for stock CPU speed only. If you increase processor frequency, Intel's safety guidelines are breached so going by their voltages does not mean much at all at 4.8GHz. Don't forget that current consumption is a function of voltage and processor frequency.

[WillyK]

Quote from the guide:
"GPU.DIMM Post: opens a sub-page which shows how many GPUs are inserted into the PCIe slots and how many DIMMs are being used. If there are any peripheral issues or system bus speeds have been increased too far, one of the GPUs or memory modules may not show in the GPU DIMM Post screen – a quick glance here can save a lot of head-scratching."

I have never seen my GPU (GTX590) in the GPU POST screen, yet I have never had any specific problems with it (as far as I can tell). What does that mean and should I be worried?

In case this is an indication about some problem, what can I do in order to make R4E/RIVE show my GPU there?

EDIT:
So far I've been checking the GTX590 using GPU-Z 0.6.3 showing Ok status and normal values for both GPUs (GTX590 encapsulates 2x GTX580 within the same physical body).

I decided then to try the Asus GPU Tweak combined tool, and while it's showing normal voltage for the second GPU2 (0.913v), it's showing the insane voltage of over 352787.092v for the first GPU1 !!!

Since my system apparently is working fine and the standard GPU-Z tool shows correct voltages, the only logical conclusion is that the Asus tool is failing to get the correct voltage from the mobo. That's interesting since if this was a general GPU Tweak bug, many people would have pointed that out already, so there must be something wrong with ... my R4E/RIVE motherboard? Or what do you think?

[lenehan]

Hi Raja. May I suggest to have a pdf format for downloading. Cheers.

[Raja@ASUS]

Future guides will have PDF. This one is long enough in the tooth to stay as is I think.

[Zambeza]

Optimal and safe overclocking for 3930k Please advise

[Raja@ASUS]

Use the easy OC guide in the forum. I don't run any of these CPUs over 4.3GHz (even the fully unlocked models), it seems to be where most samples are comfortable.

[Zka17]

Raja, this guide worked wonderfully for me - thank you very much! If you have time, check my thread... (link in my signature)