CWWK W680 NAS motherboard

[fl0w]

Just received mine but it's stuck at code 55, I tried 3 different RAM kits (2 of which worked on another CWWK motherboard). CPU is an i9 14900T, and I already cleared CMOS.
Kits are Crucial 2x32GB 5600MHz and one is Corsair 2x16GB 7200MHz.
Anyone had the same issue?

 

[gabemcg]

Just received mine but it's stuck at code 55, I tried 3 different RAM kits (2 of which worked on another CWWK motherboard). CPU is an i9 14900T, and I already cleared CMOS.
Kits are Crucial 2x32GB 5600MHz and one is Corsair 2x16GB 7200MHz.
Anyone had the same issue?

those kits are too fast. Best I was able to get to post was 2x32gb 4800MHz (mine are DDR5 ECC UDIMM,)

 

[fl0w]

5600MHz kits are capable of running at 4800MHz (same kit runs without issue at 4800MHz on the CWWK Q670 motherboard)
And default speed is 5600MHz with a 14th gen CPU on this board:

 

[RolloZ170]

those kits are too fast. Best I was able to get to post was 2x32gb 4800MHz (mine are DDR5 ECC UDIMM,)

mem. speed is set of max. CPU capabilities.
with two DIMM per channel the speed is reduced ( Enforce POR )
there are downgrade profiles in the SPD, issue are most a result of bad BIOS programming
(not very helpful, i know, most BIOS updates after launch is see 90% "improve RAM compatibility" )
some RAM higher than 4800 can be OC RAM, higher speed only with XMP/EXPO enabled and higher voltage than std. DDR5 1.1V
those RAM run usualy JEDEC @4800 1.1V without XMP/EXPO enabled.

 

[gabemcg]

5600MHz kits are capable of running at 4800MHz (same kit runs without issue at 4800MHz on the CWWK Q670 motherboard)
And default speed is 5600MHz with a 14th gen CPU on this board:

I assume you are using the correct slots, have you tried a single stick?

 

[fl0w]

I assume you are using the correct slots, have you tried a single stick?

Yes, I made a new test, now the 2 digit display doesn't even light up... Only the blue LED near the EPS socket.
The chipset heatsink is warm so I guess the system is not completely dead.
Edit: okay, what they call DIMM4 seems to be the first slot, I get the 55 error code on this slot.
I'm flashing the BIOS with a programmer, I will see if it changes anything. Dump shows that the checksum is different from the 2 versions I found on their website.

 

[fl0w]

Exact same behavior with the latest BIOS.

 

[gabemcg]

 

[fl0w]

The motherboard is defective, during my tests the 2 digit display stopped working. Now the motherboard doesn't show any sign of life except the blue LED...

 

[GMason]

Hello. I am quite happy with the card for the price. However, I have a memory issue but didn't find the option to reduce the frequency in the bios. How did you do it?

More importantly, does it support PCI bifurcation?

 

[qwrty]

Hello,

just bought this mobo, love it.

Just to let you know, lastesr BIOS tagged "4200mem" works great with 128GB RAM (4x32GB) @4200mhz
Cannot POST with another BIOS with 4 stick, but works great @4800mhz with 2 sticks.

I'm wondering if someone have a custom BIOS for this mobo to unlock memory settings in the BIOS and try more settings to boot @4800mhz as we cannot change anything on memory side in the BIOS... ?

Thank you.