03-21-2019 06:58 PM - last edited on 03-06-2024 08:28 PM by ROGBot
03-24-2019 09:28 AM
03-24-2019 12:01 PM
03-24-2019 05:41 PM
R5Eandme wrote:
I don't see your RAM on my copy of the latest QVL for that motherboard (see attached). Of course that doesn't mean it wouldn't post at least at the base JEDEC speed of 2133 MT/s, but it might explain some of the unexpected behavior. I am not sure when you have XMP enabled vs. disabled in your descriptions. You say that you can boot with earlier BIOS versions < 3701 when XMP is not enabled, is that right? But then it won't boot on BIOS 3701 with XMP still disabled? Booting on earlier BIOS but not with later BIOS, all with XMP disabled, is weird.
On the other hand, if you HAVE been using XMP and having these problems, try disabling XMP and see if it posts using BIOS 3701, and also if you can see your SPD info in CPU-z. If all is good, then maybe you have a base to start from and you can try to manually tweak memory timings and voltages. I am ignorant on how to do that, maybe Arne and others can help you.
I am using the same motherboard, with an i7-5930K and latest BIOS vers 3701. I have no issues at all with 64GB all 8 slots, Corsair Vengeance LPX CMK64GX4M8A2400C14, and no XMP (which means it is running at 2133 MT/s). It seems motherboards/cpus are finicky when you try to push the memory speeds past what they can handle, and sometimes there is a tradeoff between speed and amount of RAM. I chose the full amount of 64GB over speed, for reasons unknown to even me.
03-24-2019 08:02 PM
03-25-2019 12:40 PM
R5Eandme wrote:
Hello Mindflayer.
That fact that your kit won't post with latest BIOS even with one stick might be telling you that the memory is somehow not compatible with that motherboard. I have no advice for alternate DDR4 other than to consult the QVL list, but that list is now over 5 years past when ASUS was testing memory kits on that board. Nonetheless many of those kits are probably still available. The memory I am using is still available at Newegg. There might be newer memory kits available with the same exact timings as found on the QVL, that might work fine.
All these discussions assumes the CPU is working ok, it's memory controller is ok. Could there be a slight problem there?
03-24-2019 05:37 PM
Arne Saknussemm wrote:
I'm afraid this is not an uncommon story...
For Haswell E I would recommend staying on 2xxx series BIOS for the RAM compatibility. Vengeance being "value" RAM was never the best choice on that platform. The CPU memory controller being the limiting factor most often...coupled with the quality of the RAM.
You may need to tune DRAM voltage a little higher as well as VCCSA
03-24-2019 11:37 PM
mindflayer wrote:
Is there a certain kit you'd recommend?
03-25-2019 12:46 PM
Arne Saknussemm wrote:
The G.Skill Ripjaws V kits worked well
Have you tried setting the RAM up manually...not using XMP profiles. And have you tried with 100BCLK instead of 125 strap?...might be worth a shot...
Just enter primary timings and frequency and set DRAM voltage (1.35...1.4v) and VCCSA (try 1.1v 1.2v)
04-03-2019 08:33 PM