z690 Apex with Samsung DDR5 Memory Issues?

[Murlo26]

Hi,

I have a new build put together and the memory is giving me all sorts of issues. I have seen a few people saying that the Apex board might have some dim slot issues but not sure if that is actually an issue. I snagged up a 6000mhz CL36 G Skill kit and tried pairing with my apex board and 12900k. Everything is on a custom water loop with fairly solid temps. I am on the latest bios. I recognize the Samsung flavor of sticks are not officially supported by the Apex board yet, but am curious as to why (per the QVL). The hero board has mine listed already but the apex list seems light. I tried the XMP profile and have had very little luck. I have been able to get it to boot into windows but typically crashes on any heavy workload and sometimes even just being in windows things lock up.

I am just curious if this is something I need a bios update for and just have to wait or I should look at going after different memory. Part of why I got the apex was to finally play around with memory overclocking but not even being able to run xmp kind of sucks. Just surprised that the apex board has so little support for memory so far.

Any thoughts?

I appreciate any help and sorry if this is covered elsewhere.

PC Components:

12900k (stock for now until I get memory sorted)
z690 Apex
G Skill F5-6000U3636E16GX2-TZ5K (32gb)
EVGA 3090 Kingpin Hydrocopper
EVGA 1300W G2 PSU
Corsair 5000d
2x360mm radiators
Windows 11

Edit: I have also tried the built in profiles on the apex, like all of them and none of those seem to work even speeds down to like 5200mhz, wouldn't boot into windows on those. I also tried the XMP and bumped voltage up...no luck really.

[Tactical Donut]

Hi,

I have a new build put together and the memory is giving me all sorts of issues. I have seen a few people saying that the Apex board might have some dim slot issues but not sure if that is actually an issue. I snagged up a 6000mhz CL36 G Skill kit and tried pairing with my apex board and 12900k. Everything is on a custom water loop with fairly solid temps. I am on the latest bios. I recognize the Samsung flavor of sticks are not officially supported by the Apex board yet, but am curious as to why (per the QVL). The hero board has mine listed already but the apex list seems light. I tried the XMP profile and have had very little luck. I have been able to get it to boot into windows but typically crashes on any heavy workload and sometimes even just being in windows things lock up.

I am just curious if this is something I need a bios update for and just have to wait or I should look at going after different memory. Part of why I got the apex was to finally play around with memory overclocking but not even being able to run xmp kind of sucks. Just surprised that the apex board has so little support for memory so far.

Any thoughts?

I appreciate any help and sorry if this is covered elsewhere.

PC Components:

12900k (stock for now until I get memory sorted)
z690 Apex
G Skill F5-6000U3636E16GX2-TZ5K (32gb)
EVGA 3090 Kingpin Hydrocopper
EVGA 1300W G2 PSU
Corsair 5000d
2x360mm radiators
Windows 11

Edit: I have also tried the built in profiles on the apex, like all of them and none of those seem to work even speeds down to like 5200mhz, wouldn't boot into windows on those. I also tried the XMP and bumped voltage up...no luck really.

I can't speak to the Gskill kit you have, however I have an Apex board and like you have had continual BSODS on both XMP 1 and XMP II profiles with a Corsair 5600mhz kit. Runs fine at JEDEC speeds. Latest BIOS 1101, and setting XMP1 with a slight bump of VDD up to 1.275v seems to have helped. Been stable for a week or so. My kit isn't on the QVL list either.

[wing_man]

If G Skill F5-6000U3636E16GX2-TZ5K will work on a Hero it should work on an Apex. I have the same ram and Apex but haven't had a chance to build it yet.

[Murlo26]

I can't speak to the Gskill kit you have, however I have an Apex board and like you have had continual BSODS on both XMP 1 and XMP II profiles with a Corsair 5600mhz kit. Runs fine at JEDEC speeds. Latest BIOS 1101, and setting XMP1 with a slight bump of VDD up to 1.275v seems to have helped. Been stable for a week or so. My kit isn't on the QVL list either.

Ok, well at least I am not alone. I am currently running at JEDEC speeds as well, I think just base 4800. Nothing else has been remotely stable.

[Murlo26]

If G Skill F5-6000U3636E16GX2-TZ5K will work on a Hero it should work on an Apex. I have the same ram and Apex but haven't had a chance to build it yet.

Well I would think so but if you look at the QVL for the apex, there is very little, actually maybe no samsung die ddr5. Which is why I feel like this is a wait it out deal. But part of me going ddr5 was to have better than ddr4 performance and at JEDEC speeds I think most ddr4 that is CL16 3600 will probably be better. Not the end of the world but just bummed that the apex QVL is smaller. I would imagine though that anything the hero can do the apex should be able to do eventually.

[wing_man]

All the other ROG motherboards have the F5-6000U3636E16GX2-TZ5K on their QVL except the Apex. The Apex should be the one motherboard that should be able to run any ram. If it can't, I want my money back!!!!!

[Deke06]

Hi there.

I don't have the Apex, but I have been running this kit on my Z690-I with success. It was a bit problematic at first and required some tweaking. Rock solid stable now. It did require significant voltage increase to run XMP I along with a few other tweaks. I'll list them here and maybe it can help with your situation.

VDD 1.375
VDDQ 1.375
IVR Transmitter VDDQ Voltage 1.375
Memory controller voltage 1.25

CPU System Agent Voltage: Offset mode (this was actually the final tweak I made that got the kit stable
- CPU System Agent Voltage Offset: Auto

Additionally, and because I'm paranoid, I dialed in the BCLK manually to 100, disabled Asus multicore enhancement, set the BXLKRAM manually to 100:100, the Memory Controller: DRAM frequency to gear 2 (1:2), and manually set the DRAM frequency to 6000.

Finally, in BIOS Advanced\ Platform Misc Configuration I disabled PCI Express Native Power Management, since leaving it enabled causes a ton of WHEA errors.

Every CPU, RAM and board combo is different, and DDR5 seems to have re-emphasized this fact. Hope this info helps and best of luck. It's a great kit once you get it stable.

[Murlo26]

All the other ROG motherboards have the F5-6000U3636E16GX2-TZ5K on their QVL except the Apex. The Apex should be the one motherboard that should be able to run any ram. If it can't, I want my money back!!!!!

Well this was my thinking I guess...was pretty surprised.

[Murlo26]

Hi there.

I don't have the Apex, but I have been running this kit on my Z690-I with success. It was a bit problematic at first and required some tweaking. Rock solid stable now. It did require significant voltage increase to run XMP I along with a few other tweaks. I'll list them here and maybe it can help with your situation.

VDD 1.375
VDDQ 1.375
IVR Transmitter VDDQ Voltage 1.375
Memory controller voltage 1.25

CPU System Agent Voltage: Offset mode (this was actually the final tweak I made that got the kit stable
- CPU System Agent Voltage Offset: Auto

Additionally, and because I'm paranoid, I dialed in the BCLK manually to 100, disabled Asus multicore enhancement, set the BXLKRAM manually to 100:100, the Memory Controller: DRAM frequency to gear 2 (1:2), and manually set the DRAM frequency to 6000.

Finally, in BIOS Advanced\ Platform Misc Configuration I disabled PCI Express Native Power Management, since leaving it enabled causes a ton of WHEA errors.

Every CPU, RAM and board combo is different, and DDR5 seems to have re-emphasized this fact. Hope this info helps and best of luck. It's a great kit once you get it stable.

Thank you for the reply. I might try this out and see if it helps or works. Thanks again.

[Deke06]

My pleasure. Incidentally, this kit isn't on the QVL for my board either. It was just the first kit I could actually get my hands on.