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ASUS X99 Motherboard Series - Official Support Thread (North American users only) - Page 455

post #4541 of 15770
Quote:
Originally Posted by Ryncrash View Post

Ok I'm a bit confused.
I recently bought a Asus X99- Deluxe and Intel 5820k
for 2 months I have been running this computer perfectly.
I just now have been randomly getting Error codes AF on start up.

So it go like this. If the computer stays on it runs fine for weeks. Aida64 bench for over 4 hours normal temps nothing. I can play all my game no crashing nothing.
I can even hit the restart button and it restarts perfectly.
Its when I power off the computer and let it sit for more then 5 mins when I power on the computer the mother board shows AF code with a Red led on CPU.

I bypass this by hitting the reset button 10 plus times. At some point it clears the code and kicks on.

It does this with stock settings and OC settings. I can't figure out why.

PC spec

Asus X99 Deluxe
5820k oc @ 4.5 with 1.28v
16 gigs LPX corsair XMP at 2750mhz
GTX 980 sli
NZXT 850watt Gold.

Should I RMA the CPU it seems to be a trend around here. But I"m starting to think that it might not be the CPU since I can run the computer for weeks even months if I don't turn off my computer.
I want to start turning off my computer to save money on the electric bill.

you need more VCSSA.
2750MHz on what strap?
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post #4542 of 15770
Yes the CPU led is lit. Dram hasn't ever given me a issue.
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post #4543 of 15770
Yes the CPU led is lit
Quote:
Originally Posted by sblantipodi View Post

you need more VCSSA.
2750MHz on what strap?

Strap 125
X99
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post #4544 of 15770
Hi guys,

Just started playing with my new X99 rig yesterday and thought I'd ask you opinion...
My rig: X99-Deluxe; 5820K with NH-D14; ripjaws4 4x4GGB 2800Mhz CL16 @ 1.20V

Managed quite easily to get stable 4250Mhz (125x34) with XMP enabled on my ripjaws running @ 1750.

I did have to manually set DRAM voltage to 1.25V. Leaving everything auto (so optimized degaults) and just enable XMP resulted in 1.20V 2800Mhz on 125 strap and not getting through Post with infinite restart loop (so I can't give Qcode). These modules are rated @ 1.20V though. Anyone else getting them working on 1.20V @ 2800 on 125 strap? as normally hynix are mostly rated 1.30V at these clocks right? Could it be because the CPU mem controller likes a bit more voltage on these clocks rather than the RAM itself or would you consider tweaking something else like VCCSA? I suppose setting 100 strap will only result in less stability right? Or should I give it a try?

For the core voltage I started at manual 1.20V but was able to lower to 1.10V and still pass short AIDA64 stress test (didn't have the time yet for more elaborate testing). If I am not mistaking 4250Mhz is quite good result for 1.10V correct? Load temps seem to be mid 50s to low 60s with NH-D14 so I do have some more headroom, but tend to be kinda freaky about temps...

When setting adaptive voltage I ended up on offset 0.15V and OC 1.00V actually resulting in 1.12V under AIDA64 stress test. Offset anything lower than 0.15V gives me BSOD under stress test. Could try lowering OC just a tad more...


I did notice some strange things. Probably you guys can explain:

- just enabeling XMP (and upping DRAM voltage) sets 125 strap as expected, but when leaving core voltage to auto it sets it fix at 1.20V. Doesn't even seem to matter what max multiplier I put. Always getting 1.20 fix. Doesn't seem normal behaviour to me...

- When booting with optimzed defaults, I get very very strange readings for Vcore in AISuite. Going down to 0.000V??? Also idle CPU power in these settings is less than half the wattage then anything I seen when overclocking (with 125 strap at least). Default will give me about 20W idle while anything overclocked will be over 40W. Normal? Some C states are getting disabled by default when overclocking??


Thanks already for reading this far!
Any feedback would be much appreciated.

Best regards,
Stijn
    
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post #4545 of 15770
@Raja@ASUS
Do you know when will we have NVMe support for UEFI in bios?
My friend has a Samsung SM951 NVMe PCIe SSD but keeps getting the reading says it is on AHCI protocol when installing on Win 8.1 through UEFI. The read and write speed got bottleneck on AHCI.
Win 8.1 has native support for NVMe so the problem could lies with the driver in UEFI.
Edited by kenshinco - 1/13/15 at 7:24am
post #4546 of 15770
Thread Starter 
Quote:
Originally Posted by Ryncrash View Post

Yes the CPU led is lit. Dram hasn't ever given me a issue.


DRAM has never given you an issue in the OS- It is giving you an issue during BOOT however. Try running the DRAM at a lower speed/looser timings or tuning system agent voltage. Might need to tune cache voltage as well.
post #4547 of 15770
Quote:
Originally Posted by Raja@ASUS View Post

DRAM has never given you an issue in the OS- It is giving you an issue during BOOT however. Try running the DRAM at a lower speed/looser timings or tuning system agent voltage. Might need to tune cache voltage as well.

You guys might have to explain what Cache voltage is. I have never adjusted that setting and wouldn't even know where to look for it. I can adjust the Dram settings and see if that fixes it.
My problem is this error doesn't happen all the time. I just shut down my computer and it restart perfectly after siting for 15 mins. Then did it again. I believe its a ghost in the machine that is playing jokes. thumb.gif
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X99
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Corsair DDR4 16gb  256 SSD 256 SSD Corsair H110i 
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post #4548 of 15770
Thread Starter 
Quote:
Originally Posted by Ryncrash View Post

You guys might have to explain what Cache voltage is. I have never adjusted that setting and wouldn't even know where to look for it. I can adjust the Dram settings and see if that fixes it.
My problem is this error doesn't happen all the time. I just shut down my computer and it restart perfectly after siting for 15 mins. Then did it again. I believe its a ghost in the machine that is playing jokes. thumb.gif


Look for a setting called "Cache Voltage" or something similar- it's near all the other voltages that you have been changing and should not be hard for you to find.

Maybe you need to read up a bit more on POST, DRAM training and how the mechanisms can drift to further your understanding.
post #4549 of 15770
Thank you Raja, I will start there and give a update later. thumb.gif
X99
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X99
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Corsair DDR4 16gb  256 SSD 256 SSD Corsair H110i 
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post #4550 of 15770
Quote:
Originally Posted by kx11 View Post

so suddenly the MB doesn't read 12gb of ram which means it reads only 4gb of ram !!!


i'm on windows7 , everything seems fine and smooth but 12gb of RAM are missing


edit : CPU-Z is reading 16gb of ram while windows isn't


Increase SA voltage by .04
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