03-18-2014 08:54 AM - last edited on 03-05-2024 09:38 PM by ROGBot
03-19-2014 11:32 AM
03-19-2014 01:12 PM
03-22-2014 03:09 PM
Sihastru wrote:
Thanks for answering. I too have suspected the RAM, since it is the activation of XMP that causes problems. But it's strange since it works at 1333MHz (probably SPD) with 1.35V and it works, as I explain further, at 1600MHz if I overclock the system.
Well, I'm sorry to say, but the QVL for this board is not very helpful, since it contains only 3 GSKILL kits and 2 KINGSTON kits that are configured as 8x8GB (64GB). Depending on the location, some of the kits are impossible to find and most of them "feature" very high profile heat spreaders. And that can lead to physical compatibility issues with other components.
Other then that, it has a few quad channel kits of lower density/capacity and the bulk of the list contains dual and triple channel kits (that I find a just a little bit, I don't know... hilarious for a board of this caliber). Maybe I'm a little to harsh on this matter. QVL is QVL... better to have that extra information I guess.
My kit is theoretically 64GB, but in the box they were distributed in two smaller boxes that each had 32GB. They all have the same model number inscribed on each of the modules. So I can't be sure. But I already tried to use only half of the modules, that I marked as all being from one of the smaller boxes. With the same result.
Anyway, reading other forum posts on the internet, I have found that the board can be stable if you overclock your CPU and manually set primary memory timings. It does sound counter intuitive, that a system is stable when overclocked and seriously unstable when at "stock" settings, but I'll take it. I know XMP is technically overclocking, but come on... we're talking about 1600MHz and that's under the 1866MHz official support ceiling. So my XMP settings should be considered underclocking.
So now I am running the CPU @ 4.4 GHz, RAM @ 1600 8-8-8-24 1.35V. I'm using a dynamic Vcore of +0.065, because I want my idle voltage to drop to 0.8V, my PC spends quite some time at or near "active" idle. I've been running the system continuously since yesterday, and there have been no random restarts incidents.
It also passed a few hours of prime95 and a few runs of IBT, so at least from my point of view, since stability is a subjective thing, it is stable.
I messed with a few other settings in the BIOS, if anyone is interested I could make a note of the most important ones and post them here, but when we're talking about overclocking, every system is different.
So I will run like this, perhaps higher towards 4.6-4.8GHz, at least until there are new BIOSes that hopefully improve the stability of the board.
In my opinion, as a guy who has tweaked ASUS' motherboards since the Pentium3 era, there's something wrong with the board. Either it's the immature BIOS, or the "improved and optimized for IB-E trace layout" that ASUS' PR is so proud of has a few quirks and kinks, it remains to be seen.
I wonder if the guys that have no problems with the board have a different revision...?
03-24-2014 03:34 AM
03-24-2014 05:21 AM
03-29-2014 01:48 PM
Raja@ASUS wrote:
Set CPU Current capability to 170%. If that does not fix it the issue lies somewhere deeper.
03-29-2014 11:53 PM
Sihastru wrote:
Sorry it takes a bit longer for me to respond, but testing for this problem takes time. It does help, the restarts are less frequent, or at least they seem to be less frequent, it's hard to draw a conclusion when the problem we're trying to fix has a random aspect to it. In fact the restarts seem to be a lot less frequent as I increase the current capability.
But... starting with 130%, the phase control goes automatically to extreme, and the setting cannot be changed, so all CPU phases work at full tilt all the time. Does this mean that some of the phases on the motherboard are malfunctioning?
03-30-2014 03:07 AM