Gigabyte MJ11-EC1 EPYC 3151 Mystery

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serialintruder

New Member
Dec 19, 2023
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Hi, also ordered one of these boards from Ram-Koenig. The 69 Euro offer with ATX adapter was just too good.
Added 2x "SKhynix Huawei 32GB PC4-2400T ECC RDIMM CH121 V3 Compute Node" to the order. According to the MJ11-EC0 specs these should work, right?
64GB was running good, 128Gb with 4 Modules not even starting any kind of OS from usb and unraid also does not want to boot anymore.
both pairs are ok in blue slots, but fully populated no way.

is there a setting in bios i have to make, or its just the wrong RAM?
 

iridial

New Member
Oct 14, 2023
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I had the same issue with PC4-2400T modules in all 4 slots, I could boot into memtest86 but it would crash after a while from all the uncorrectable ecc errors, and I tried the same modules on a different board to make sure they where not defective (they were not).

The only way I found to get it to complete a test or boot any system was by using four PC4-2133P modules, I only had 16gb ones. I'm not 100% sure but I think they where also using the 1866 freq (as per the MJ11-EC0 manual).
I ended up just using 2x 32gb 2400T..
There are many settings in the bios for the ram, but I'm not sure anyone found the right combination to make 4x 2400T modules work, for now..
 
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serialintruder

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Dec 19, 2023
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got that thing running with 4 of SK Hynix HMA84GR7MFR4N-UH 32GB Rdimm running now with 1866, not 2133.

Bios Advanced --> AMD CBS --> UMC --> DDR4 --> DDR4 Common Options -->
OC on, All set to auto, except timing fix to 933
in the other Menu ECC from Enable to Auto, but i think 933 timing did it.

if it is running stable, i will keep it.
 
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iridial

New Member
Oct 14, 2023
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cool, I'll try that setting with some 2400T and 2666V modules I have.

Are you able to confirm that your memory in this configuration is running in ECC mode in the OS?
 

BadMax02

New Member
Oct 29, 2023
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I already mentioned it in a germen thread but here again.

Im running 2x 32Gb and 2x 16Gb in a 48GB Per channel config with 2400MHz using that overclock setting in the BIOS, i have everything set to auto except clock which is set to +xxx (the smallest + option there is) and got it to run in ECC with 2400MHz 96Gb Dual Channel without any errors as far as i can see.
i used 16 Gb 2666V single rank dimms and 32gb 2933Y dual rank dimms, and got them succesfully running at 2400mhz, any higher than that would just cause a black screen on startup

this is what TrueNAS shows:

Code:
admin@truenas[~]$ sudo dmidecode -t memory
# dmidecode 3.4
Getting SMBIOS data from sysfs.
SMBIOS 3.2.1 present.

Handle 0x0045, DMI type 16, 23 bytes
Physical Memory Array
        Location: System Board Or Motherboard
        Use: System Memory
        Error Correction Type: Multi-bit ECC
        Maximum Capacity: 128 GB
        Error Information Handle: 0x0044
        Number Of Devices: 4

Handle 0x004D, DMI type 17, 40 bytes
Memory Device
        Array Handle: 0x0045
        Error Information Handle: 0x004C
        Total Width: 128 bits
        Data Width: 64 bits
        Size: 16 GB
        Form Factor: DIMM
        Set: None
        Locator: DIMM_P0_A0
        Bank Locator: BANK 0
        Type: DDR4
        Type Detail: Synchronous Registered (Buffered)
        Speed: 2667 MT/s
        Manufacturer: Micron Technology
        Serial Number: 17463C42
        Asset Tag: Not Specified
        Part Number: 18ASF2G72PZ-2G6D1 
        Rank: 1
        Configured Memory Speed: 2400 MT/s
        Minimum Voltage: 1.2 V
        Maximum Voltage: 1.2 V
        Configured Voltage: 1.2 V

Handle 0x0050, DMI type 17, 40 bytes
Memory Device
        Array Handle: 0x0045
        Error Information Handle: 0x004F
        Total Width: 128 bits
        Data Width: 64 bits
        Size: 32 GB
        Form Factor: DIMM
        Set: None
        Locator: DIMM_P0_A1
        Bank Locator: BANK 1
        Type: DDR4
        Type Detail: Synchronous Registered (Buffered)
        Speed: 2933 MT/s
        Manufacturer: Samsung
        Serial Number: 425F2098
        Asset Tag: Not Specified
        Part Number: M393A4K40CB2-CVF 
        Rank: 2
        Configured Memory Speed: 2400 MT/s
        Minimum Voltage: 1.2 V
        Maximum Voltage: 1.2 V
        Configured Voltage: 1.2 V

Handle 0x0053, DMI type 17, 40 bytes
Memory Device
        Array Handle: 0x0045
        Error Information Handle: 0x0052
        Total Width: 128 bits
        Data Width: 64 bits
        Size: 16 GB
        Form Factor: DIMM
        Set: None
        Locator: DIMM_P0_B0
        Bank Locator: BANK 0
        Type: DDR4
        Type Detail: Synchronous Registered (Buffered)
        Speed: 2667 MT/s
        Manufacturer: Samsung
        Serial Number: 35FB292C
        Asset Tag: Not Specified
        Part Number: M393A2K40BB2-CTD 
        Rank: 1
        Configured Memory Speed: 2400 MT/s
        Minimum Voltage: 1.2 V
        Maximum Voltage: 1.2 V
        Configured Voltage: 1.2 V

Handle 0x0056, DMI type 17, 40 bytes
Memory Device
        Array Handle: 0x0045
        Error Information Handle: 0x0055
        Total Width: 128 bits
        Data Width: 64 bits
        Size: 32 GB
        Form Factor: DIMM
        Set: None
        Locator: DIMM_P0_B1
        Bank Locator: BANK 1
        Type: DDR4
        Type Detail: Synchronous Registered (Buffered)
        Speed: 2933 MT/s
        Manufacturer: Samsung
        Serial Number: 425F227A
        Asset Tag: Not Specified
        Part Number: M393A4K40CB2-CVF 
        Rank: 2
        Configured Memory Speed: 2400 MT/s
        Minimum Voltage: 1.2 V
        Maximum Voltage: 1.2 V
        Configured Voltage: 1.2 V
 

serialintruder

New Member
Dec 19, 2023
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1706622277141.png
this is what unraid is telling.
i know i have to check all ECC settings, because this is all new to me, also have to check if ZFS demands special ECC settings....
 

ericloewe

Active Member
Apr 24, 2017
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SATA and "fast" do not go together. It's also not clear how that riser adapter fits in with SATA.
 

Gymnae

New Member
Nov 20, 2023
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Regarding SlimSAS i8 to PCI-e adapter, the following adapter is now available for customers in the EU. I plan to order two to Germany, since shipping is quite expensive. Not sure it it will work, but so far all cables and BIOS versions did not work with my dual x8 PCI-e adapter.
 

whcvip

Member
Mar 9, 2022
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Denmark
So I got my PCIe 8i adapter from Aliexpress today, and it have tested it with 3 different cables, from 3 different sellers. The adapter was tested with a Nvidia P2000 GPU in Windows 11.

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All cables works fine, and of curse the adapter works fine as well. Could not draw more than 30W for what ever reason, did not have room enough on my test SSD to install Nvidia drivers, so that could be the reason, but maybe the adapter itself is limited to 30W for security reasons, the SATA plug is not really designed to handle high wattages.

TechPowerUp GPU-Z 2.57.0 31-01-2024 12_21_23.png

But it is running at PCIe 3.0 speed and full x8 bandwidth, so that's defiantly nice!

TechPowerUp GPU-Z 2.57.0 31-01-2024 12_39_32.png

The cables I tested (from left) first is from same seller/listing as the adapter (don't know the ohm rating), second (middle) from a seller on eBay 85ohm rated, third cable is from 10gtek bought at eBay as well which is 100ohm rated. So just get the cheapest one since they all work. Longevity of curse is another matter, and only time will tell. I plan to use the 10gtek ones in my build because of the 90degree plug in the other end.

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Other adapters I have tested and can recommend is this one from eBay, for the m.2 NVME x4 slot, pretty good quality, and very fast shipping.

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Also like this adapter, but currently I will use the one above instead since it has the riser cable build in.

20240131_134756.jpg

Good quality riser cable I can recommend for the m.2 adapter above.

20240131_134842.jpg
 
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Gymnae

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Nov 20, 2023
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So I got my PCIe 8i adapter from Aliexpress today, and it have tested it with 3 different cables, from 3 different sellers. The adapter was tested with a Nvidia P2000 GPU in Windows 11.
That reads very promising. Sadly, that adapter is not shipping to Germany (or all of Europe?) from Aliexpress and I wasn't able to find it via quick search on alibaba. Is there a stated power limit? Other adaptors take a GPU 4 PIN Molex power input, maybe Molex to SATA Power could help...
 

whcvip

Member
Mar 9, 2022
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Denmark
That reads very promising. Sadly, that adapter is not shipping to Germany (or all of Europe?) from Aliexpress and I wasn't able to find it via quick search on alibaba. Is there a stated power limit? Other adaptors take a GPU 4 PIN Molex power input, maybe Molex to SATA Power could help...
I live in Denmark, I don't know why they would not ship to Germany. Ordered on 4. jan, so defiantly not fast delivery, but no issue here to Denmark.

Don't know if the 30W limit is the adapter, or the build in Nvidia driver on Windows 11 (from 2008), will do some more testing later. But since the plug itself on the adapter is SATA, should not matter if you use Molex. But either ones are not really made to handle more than 45w or so.

Did also order this adapter from Aliexpress, but seller never shipped, so defiantly do not order from this seller. But it has a PCIe x6 power plug, so should be better for GPUs and at least the plug should be able to handle more wattage.
 

jxta

New Member
May 4, 2021
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I live in Denmark, I don't know why they would not ship to Germany. Ordered on 4. jan, so defiantly not fast delivery, but no issue here to Denmark.

Don't know if the 30W limit is the adapter, or the build in Nvidia driver on Windows 11 (from 2008), will do some more testing later. But since the plug itself on the adapter is SATA, should not matter if you use Molex. But either ones are not really made to handle more than 45w or so.

Did also order this adapter from Aliexpress, but seller never shipped, so defiantly do not order from this seller. But it has a PCIe x6 power plug, so should be better for GPUs and at least the plug should be able to handle more wattage.
Is it worth to spend that much in cabling+risers for such low priced MB?
 

Gymnae

New Member
Nov 20, 2023
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Is it worth to spend that much in cabling+risers for such low priced MB?
tots is. for me this is less a question of cash to use ratio but more about having a vgpu transcoding and shared retro gaming box. for science. almost all parts are more than the board, if you go for 64 gb ecc ram and so forth
 

whcvip

Member
Mar 9, 2022
44
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Denmark
This is my build so far, I plan to build two identical servers in the Jonsbo N3 cases. Im limited in space for these servers, and this is pretty much what I have room for currently (replacing 4 smaller 4-bay nas servers). So want to run 8x SATA HDD/SDD and have a GPU build in and have either 10G Base-t or 25G SFP28 NIC. With only 2x PCIe openings in the case, and the nature of this motherboard, with the SlimSAS 8i kind of getting in the way of the first opening, I have to be a little creative to get i all fitted inside.

I went with cheap used SFX PSU's, after testing be quit! 450w and another Chieftec 550W SFX PSU's (the fan on those was loud, especially the Cheiftec one), I ended up trying this one from eBay, near silent, pretty effective (better than the two others I tried). Just around 25W idle in Unraid, that is with 4 case fans and 64GB RAM. 3-year warranty claim from the seller. So bought several of these, so I can swap them out should anything happened seller accepted 20 EUR each for 6 of these.


20240131_161143.jpg

Bought the cheapest 4x SATA to 4x SATA and MiniSAS to 4X SATA I could find on Aliexpress, and all cabling to the backplane fits nicely underneath the motherboard, so Pretty nice cable management in this case.

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I/O Shield of curse from this thread, just makes it look so much nicer, and should also prevent some dust accumulation.

20240131_160943.jpg

Noctua fans on top NF-A8 PWM, and in the HDD area I use Arctic F9 PWM PST CO. The Noctua one I already had, and since I want to go for value in this build, the Arctic hopefully will work just fine, and cost roughly a third of the Noctua counterparts. The little 60mm fan is kind of loud, so have ordered some AVC fans of Aliexperess, very cheap and hopefully they are original Hydraulic Bearing ones, but even if they are the Ball Bearing ones I am happy at that price.

20240131_160927.jpg

To get the GPU and NIC fitted inside I made this franken-bracket of a Supermicro standard tall bracket from a 3U server, and a tall bracket for my NIC, so that I can mount the NIC upside-down, and this way have room for the SlimSAS 8i plug underneath the NIC (got a 90 degree angled plug SlimSAS cable), and route the riser cable from the m.2 adapter underneath the NIC as well. Think this will work quite well. Though the spacing between the GPU back PCB and the NIC back PCB is a little close to eachother, not contacting, but I am thinking about putting some thermal pads in between just to be 100% safe that they don't contact and shorten out something.

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So am getting pretty close to a final build here, just the fan on the CPU, and maybe some thermally controllable fan adapters, since I cannot find a way to control the HDD/SSD fans according to the HDD temps, not in BMC, and so far not in Unraid, so maybe better to thermally control those fans. And maybe make a smaller/better adapter for the 4-pin plug on the motherboard. I have some new plugs, so could maybe mod the PSU, to make a dedicated cable to the motherboard instead of the 20-pin adapter, that takes up quite allot of space in the case.

Any recommendations are very welcome. And please share your build progress :).
 
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whcvip

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Mar 9, 2022
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Is it worth to spend that much in cabling+risers for such low priced MB?
Well name me another motherboard that have 8xSATA onboard, and also ran run RDIMM, with room for more devices like GPU and NIC in a ITX form factor. Even with the price of adapters, I don't think you can really get anything close price/quality wise. And also building a new server is fun, and a learning experience, not all things needs to be financially "worth it". If I can get even 2+ years out of these server I am happy (but hoping for 5+ years).