Gigabyte MJ11-EC1 EPYC 3151 Mystery

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Bingo600

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Sep 15, 2024
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fdaforno

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Sep 24, 2025
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Hello everyone.
I also bought the MJ11-EC1 board. I would like to install a SAS controller. I have read almost all the threads and I am quite confused. Based on your experience, would it be possible to create a table with the adapters that actually work and where to find them?
Thanks a thousand to anyone who has this information
 
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etorix

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Sep 28, 2021
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Reading the thread should have led you to this blog post by @hmartin which has the relevant information (and some more…) and pictures of working adapter boards:

Your use case does not require bifurcation, just a 8654-8i cable and a good adapter with a x8 (or x16) slot for the HBA.

Alternatively, consider a X10SDV-4C-TLN2F: Widely available on eBay at the moment, x16 slot; you only lose 2 SATA ports (not relevant with a HBA) and some niceties of the Gigabyte IPMI compared with the old (but already HTML5) Supermicro IPMI.
 
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fdaforno

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Sep 24, 2025
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etorix said:
Reading the thread should have led you to this blog post by @hmartin which has the relevant information (and some more…) and pictures of working adapter boards:

Your use case does not require bifurcation, just a 8654-8i cable and a good adapter with a x8 (or x16) slot for the HBA.

Alternatively, consider a X10SDV-4C-TLN2F: Widely available on eBay at the moment, x16 slot; you only lose 2 SATA ports (not relevant with a HBA) and some niceties of the Gigabyte IPMI compared with the old (but already HTML5) Supermicro IPMI.
Click to expand...

Love u ! thanks
 
hmartin

hmartin

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Sep 20, 2017
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etorix said:
Alternatively, consider a X10SDV-4C-TLN2F: Widely available on eBay at the moment
Click to expand...
The lowest price I can find for that board is 200€ (from China, so probably you still need to pay Duties/VAT).

It looks like the MJ11-EC1 is around 100€ now, not great, but not terrible. You can definitely do the SlimSAS to PCIe breakout for less than 100€, but I admit it won't be as compact or clean as the Xeon-D.

If you're considering multiple NVMe and can stomach 10W extra power consumption, I would recommend you look at the Viking U.2 to NVMe adapter mentioned on the forum, it should allow you to install 4 NVMe via the SlimSAS 4i port. Cost for that and a SlimSAS to U.2 adapter should be around 35€.
 
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etorix

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hmartin said:
You can definitely do the SlimSAS to PCIe breakout for less than 100€, but I admit it won't be as compact or clean as the Xeon-D.
Click to expand...
I agree that the MJ11-EC1 hack will possibly come out cheaper, if shipping costs from multiple sellers do not add up to ruin the deal, but IMHO doing it all within the confines of a mini-ITX X10SDV board, with a passive adapter for 4 M.2 drives in the x16 PCIe slot, is well worth spending a little more.
 
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iPat8

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Aug 14, 2023
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Hi,

I happen to have acquired a G431-MM0 for a very reasonable price, and figured this thread would be best since you all seem to know a lot more about this board than I do.

I've installed 9x 1080TIs for a GPU encoding workload I'm planning. I'm aware there will be significant performance concerns with the 1x link, but for GPU encode that will be fine as the data transfer is nowhere near the limit of 1x. The problem I'm running into is that I can't seem to see any of the PCIe devices. I don't even see the PLX chip on the expander. I am able to see my NVMe drive and it boots from it without issue.

Edit: I'm very dumb, the power connecter on the expander board was slightly unplugged.

Welcome to any thoughts. Pictures attached for the love of the game.
http://imgur.com/OEkiQhJ
http://imgur.com/YILNgkq
http://imgur.com/mTVhcOi
 
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etorix

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Sep 28, 2021
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Prices for the MJ11-EC1 went up after Black Friday, and supply for lits with RAM and the ATX power adapter is limited. It seems that this deal is coming to an end.
 
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Debtor8100

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Dec 12, 2022
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I was planning on building an offsite backup NAS based on this motherboard. I've been reading this thread extensively and seen that many have had problems with dual rank memory and using more than 2 sticks. Also some said that QVL for memory was not to be trusted and rather ask here for memory recommendations.

So what RDIMMs are recommended? 32Gb will be enough for my usage but I am just wondering am I locked to that amount.
 
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MSameer

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May 8, 2025
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I tried the board with 32GB sk hynix HMA84GR7JJR4N-WM

It worked fine with 1 and 2 sticks. I had to tweak the bios to get 4 sticks to work.

My plan is to use it with 16GB sticks which I have but have not tested yet.
 
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Debtor8100

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Dec 12, 2022
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MSameer said:
I tried the board with 32GB sk hynix HMA84GR7JJR4N-WM

It worked fine with 1 and 2 sticks. I had to tweak the bios to get 4 sticks to work.

My plan is to use it with 16GB sticks which I have but have not tested yet.
Click to expand...
I was probably a bit unclear. I meant 2x16Gb configuration. The prices on memory are so high that 2x32Gb is out of question. The memory itself would then be over 50% of the price of the whole NAS (without HDDs).

Any recommendation on 16Gb sticks? Those are probably easier to get working since most of them are single rank?
 
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Bingo600

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Sep 15, 2024
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I have 64GB in mine

64GB ECC Ram - 2 x Samsung 32GB 2Rx4 PC4-2666V DDR4 RAM M393A4K40BB2-CTD7Q

Note: !!!
At one of the MOBO's i had startup failures when inserting them.
It turned out that i needed to "Reset the Bios" ... AKA move the Bios Reset Jumper to "Reset" for a few miniutes.
After that the system reckognized the two "stripes" , and i could reconfigure the Bios.

I got mine from an ebay.de seller, but i thik they're sold out.
 
hmartin

hmartin

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Sep 20, 2017
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Debtor8100 said:
The prices on memory are so high that 2x32Gb is out of question. The memory itself would then be over 50% of the price of the whole NAS (without HDDs).
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The price of used DDR4 RDIMMs has not risen that much, despite what the media reports. Also this board only supports up to 2400MHz anyway, anything fast is wasting money.

I recently bought 128GB of 2666MHz for around 130 Euros on a local marketplace. If you want 2133MHz it can be had for even less, but you do have to be more creative in searching, eBay is no longer a good place for RAM deals as most sellers have jacked up their prices to try and cash in.
 
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Debtor8100

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hmartin said:
The price of used DDR4 RDIMMs has not risen that much, despite what the media reports. Also this board only supports up to 2400MHz anyway, anything fast is wasting money.

I recently bought 128GB of 2666MHz for around 130 Euros on a local marketplace. If you want 2133MHz it can be had for even less, but you do have to be more creative in searching, eBay is no longer a good place for RAM deals as most sellers have jacked up their prices to try and cash in.
Click to expand...
Fast DDR4 was never my requirement. I was just trying to make sure that there is an upgrade path available if needed. That seems to be the case.

Ebay seems to have fooled me since that was my go-to place. Do you happen to know any good sellers in EU?
 
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Niskon

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Feb 19, 2024
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Debtor8100 said:
Fast DDR4 was never my requirement. I was just trying to make sure that there is an upgrade path available if needed. That seems to be the case.

Ebay seems to have fooled me since that was my go-to place. Do you happen to know any good sellers in EU?
Click to expand...
Where are you from? I got some 16GB Samsung DIMMs left that are working with the MJ11 if you are interested.
 
hmartin

hmartin

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Sep 20, 2017
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Debtor8100 said:
Ebay seems to have fooled me since that was my go-to place. Do you happen to know any good sellers in EU?
Click to expand...
National marketplace websites like Leboncoin, Kleinanzeigen, DBA, Blocket, Tradera, etc. still have good deals on RAM. Myself, and friends, have bought DDR4 for roughly 1€/GB in the past 2 months from these sites in different EU countries. Of course these sites also have their share of people who are trying to capitalise on the "shortage" and have too high opinions of their product's value. Even DDR5 5600 kits (16/32GB) can be found for around 2,50€/GB

Just be smart, meet in person or use the platform for payments. Don't buy from sellers listing things for unrealistically low prices and never use bank transfer or PayPal Friends and Family.
 
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