Trouble getting RAM running at posted speed on ROG STRIX Z490-A GAMING

[vibrate]

Hi

I cannot get the OS to boot using XMP I and my 4x8GB 3600MHz Corsair Vengeance RAM.

I did have it running at 3400MHz using XMP I but then I tried to get it to 3600MHz with some manual voltage increases and it wouldn't boot. When I went back to 3400MHz and XMP I it wouldn't boot again, even after a CMOS reset, so I'm stuck running it at the MB stock speed for now, which is 2600MHz I think.

Motherboard:
https://www.mwave.com.au/product/asus-rog-strix-z490a-gaming-lga-1200-atx-motherboard-ac34478

RAM Kit (CMW32GX4M4C3600C18):
https://www.mwave.com.au/product/corsair-vengeance-rgb-pro-32gb-4x-8gb-ddr4-3600mhz-memory-black-ac1...

RAM compatibility list for that motherboard:
https://www.asus.com/Motherboards/ROG-STRIX-Z490-A-GAMING/HelpDesk_QVL_Memory/

Listed is:
CMW32GX4M4C3600C18(Ver4.31)

I have tested RAM using Windows Memory Diagnostic. I haven't used Memtest64 yet because it will take days.

Is there a decent guide for getting this RAM running at its correct speed, or can anyone help me get it there?

Thanks a lot

V

[ThrashZone]

Hi,
Use xmp 2 not 1
Then go to timings page and switch it to Mode 1
Then drop down and use 2N
Everything else should be fine.

You can tweak these later if you want too
DRAM REF Cycle Time [350]
DRAM REF Cycle Time 2 [350]
DRAM REF Cycle Time 4 [350]
DRAM Refresh Interval [40000]

[vibrate]

ThrashZone wrote:
Hi,
Use xmp 2 not 1
Then go to timings page and switch it to Mode 1
Then drop down and use 2N
Everything else should be fine.

Thanks for your reply.

I can't find 'Mode 1' anywhere in this version of the BIOS. I did some googling and found a reference and screenshot of it here:

https://rog.asus.com/forum/showthread.php?100085-Maximus-Tweak

I don't appear to have Maximus Tweak as on option on the Strix BIOS.

I made the other changes as instructed and it failed to boot.

CPU-Z RAM screens here: https://imgur.com/a/KTnh48N

Thanks

V

[vibrate]

Can anyone else help? Beginning to regret buying ASUS is this is the extent of the support I can expect...

[Stylee]

vibrate wrote:
Can anyone else help? Beginning to regret buying ASUS is this is the extent of the support I can expect...

Just noticed your CPUz images let me take a look 🙂

[Stylee]

Hi Vibrate,

What Make and Model RAM are you using, and what manual timings have you applied? Sometimes XMP isn't ideal and manually setting timings is the best way to go.

Happy to try to help

Stylee

[Stylee]

Ok, can you split the RAM into 2 pairs purely for testing then try the XMP profile with 2 sticks at a time if you haven't already, lets try to ascertain physically if one of them is causing you an issue,

[vibrate]

Thanks mate, appreciate this.

My full spec:

Case: Thermaltake View 71 ARGB 4-Sided Tempered Glass Full-Tower E-ATX
Motherboard: ASUS ROG STRIX Z490-A GAMING LGA 1200 ATX Motherboard
CPU: Intel Core i7 10700K Octa Core LGA 1200 3.80GHz Unlocked
CPU cooler: Thermaltake Water 3.0 360 ARGB Sync Edition Liquid CPU Cooler
GPU: NVIDIA GeForce RTX 2080 Ti Xtreme Waterforce
RAM: Corsair Vengeance RGB PRO 32GB (4x 8GB) DDR4 3600MHz (CMW32GX4M4C3600C18(Ver4.31)

Here it is in the MB compatible RAM list: https://i.imgur.com/kPK4fKQ.png

FYI I tried again today using XMP II and running the RAM as low as 2400MHz and it still fails to boot.

I'll try splitting the RAM tomorrow and get back to you, just got into bed here (Sydney).

Thanks

V

[vibrate]

Right, so I split the RAM and tried using XMP II on each stick, one at a time. None of them booted. I also tried various pairs and had the same result.

I have no idea what to try next, but right now it is running at the MB default.

Any ideas?

[vibrate]

Stylee wrote:
Ok, can you split the RAM into 2 pairs purely for testing then try the XMP profile with 2 sticks at a time if you haven't already, lets try to ascertain physically if one of them is causing you an issue,

Right, so I split the RAM and tried using XMP II on each stick, one at a time. None of them booted. I also tried various pairs and had the same result.

I have no idea what to try next, but right now it is running at the MB default.

Any ideas?