T705 Stuck In PCIe 4?

[Freakyfreak87]

I have a z790 Apex Encore and I have a Gen5 T700 and T705, on the latest BIOS.  When I try and use my t705, it reads Gen4 only.

I've tried setting manual PCIe lanes for the Gen5 slot to Gen5 and seeing bifurcation to GPU and M.2, no matter what I do it stays in Gen4, but if I put my t700 in the Gen5 and apply the same settings, it'll run in Gen5, but I have to go into BIOS and manually set the Gen5/bifurcation settings then it'll read the t700 as gen5 and run as such.

But no matter what I do with the t705, if refuses to run in Gen5 in the Gen5 slot, I've seen some post on Google that haven't necessarily came to a conclusion on how to fix it.

[achugh]

Hi @Freakyfreak87 do you have any power management settings enabled? I am doing a complete guess that maybe this drive's firmware runs into issues with BIOS configured with Power Management set to ECO mode. Your friend may be running his board on default settings or high performance mode and you may have enabled ECO mode which could the different giving your this issue.

[Freakyfreak87]

No, I am running in performance, no other mode, and this persists even after a CMOS reset, like I said ATM it's like grabbing at straws because majority of the threads I've seen with the same issue either here or on MSI forums, have not really had any updates on if someone solved the problem, there was a post on the MSI forum that was like 7;pages that seems like it was mostly resolved for a few people on an x670 godlike board with a BIOS update that MSI pushed out.

[achugh]

Hi @Freakyfreak87 I'm sorry I was not clear enough.

See https://drive.google.com/file/d/1pehNU0V1inLEaDURqEvQ0b8PCvHaK_rU/view?usp=sharing recording. At time Marker 00:09:30 I am trying enable power management of various PCI components. This is what I am asking for you to check which is different from CPU overclocking profiles like Performance / Extreme etc.

Also, see time marker 00:14:45 as well. The ErP Ready (also called Energy Related Products) configuration which you can read about at https://www.asus.com/support/faq/1042220/ for reference might be something you may have enabled.

FYI, I created this recording to resolve my own issues and shared with ASUS Support team here which is why the date in this recording is fairly recent. This recording is part of a set which is posted in https://rog-forum.asus.com/t5/gaming-motherboards/can-asus-support-fix-realtek-audio-drivers-with-bo... post in case you need any other related reference. It has nothing to do with your issue.

[Freakyfreak87]

I know what you meant, and yes I have modified and tried different settings within those groups in the bios.  Nothing is showing my Gen5 nvme to switch to and run in Gen5 mode 

[Silent_Scone]

I'd recommend contacting service or etailer and organising proceedings for a replacement. Any issues, you can contact me via PM.

[Freakyfreak87]

That's the thing, this is the 3rd apex Encore I've had, first one died, second one m2_1 slot was reading nvme speeds at like 1.5gb a second only, now this one is reading the nvme in Gen4, but still getting full Gen4 speeds, but if I put my t700 in, it will read at Gen5, and perform as such, and the t705 has already been tested in another Gen5 system using an ASUS board and it read and performed at Gen5 speeds in their system

[Silent_Scone]

Three motherboards all with NVME difficulty, this changes the narrative considerably. You can't rule out the CPU, either. It's quite possible a defective CPU could exhibit PCIE problems.

Perhaps a system integrator can test this theory for you, and save you having to purchase anything.

[Freakyfreak87]

Only one other exhibited nvme issues, my first one I never tested speeds and just the mobo died the second one, had issues from the start where if you put the motherboard heatsink on and tightened it down it wouldn't read at all in the system unless you backed off the screws, it was weird and not normal, then the one I have now, rads the nvme just fine, even says it's PCIe 5.0 capable but the system won't recognize it as such, but I can get the t700 to read Gen5 in the same system.  So it's only that drive not performing correctly, and the t705 is recognized as a Gen5 in my buddies ASUS system.

[Silent_Scone]

I'd consider taking it to a system integrator and letting them diagnose it for you given this is your third board. Also I'd recommend opening a ticket with Crucial.