28 core ITX from ASRock Rack EPC621D4I-2M

VegetableStu

Shrink Way Wielder
Aug 18, 2016
1,800
2,472
i wish they did THAT for PCIe on ITX boards, LOL ,_, (although that might be impossible for PCIe4 now...)
 

Elerek

Cable-Tie Ninja
Jul 17, 2017
228
161
Wait pcie4 won't allow rising of an m.2 slot?
It absolutely still supports that. It's just harder because the increased bandwidth means timings are more important. A short cable might work just fine, a long one will need signal repeater chips.
However the devices will still work regardless, it can just downspec to pcie gen 3. It's all backwards compatible.
 

Windfall

Shrink Way Wielder
Nov 14, 2017
1,916
1,418
It absolutely still supports that. It's just harder because the increased bandwidth means timings are more important. A short cable might work just fine, a long one will need signal repeater chips.
However the devices will still work regardless, it can just downspec to pcie gen 3. It's all backwards compatible.
Thank goodness.
 

jpmomo

Caliper Novice
Feb 23, 2018
28
39
My latest project is using this mb. xeon 8176 (q spec as es versions did not work). 2 x 1TB 970 evo plus. mellanox connectx-5 (2x100Gbps) which uses x16 on the pci bus. if both ports are running at line rate, the pci bus becomes a bottleneck. I have other nics that will swap when needed (2x25, 2x40, 4x10). this server does not need a discreet gpu as I will be using both the ilo port and the onboard vga when needed. test fit into a standard s4m but will customize for the final build. for cooling, seeing if I can get away with a combo of dynatron b4a and a couple of noctua a9x14 fans! use case is for a specialized traffic generator appliance. next we need to see if the folks from asrock rack can fit the 64c epyc into a mini-itx! that mb should support pcie 4.0 which would provide enough bw for the 2x100Gbps nic and this nic is already 4.0 compliant.
 

SystmSix

Minimal Tinkerer
Jun 5, 2019
3
0
Can you elaborate where you bought it? I have contacted a vendor but they said they wont have them in the states till end of september. At the moment I need one now for a server build.....
 

Obakemono

Trash Compacter
Jan 20, 2019
49
33
I can comfirm that PCIe 4.0 and a riser cable will not work (current non 4.0 cables). I have the evolv shift and the riser cable will not run 4.0 period. I have to force the slot to run at 3.0 to use my PC.

O
 

Elerek

Cable-Tie Ninja
Jul 17, 2017
228
161
I can comfirm that PCIe 4.0 and a riser cable will not work (current non 4.0 cables). I have the evolv shift and the riser cable will not run 4.0 period. I have to force the slot to run at 3.0 to use my PC.

O
I wouldn't say that means all cables are out, my wife had to force pcie 2 with the shift's cable to get her pc to boot. I think it's just a poor quality cable. I tried using it with my mb and gpu and it booted but at pcie 3 x8, I had to go to pcie 2 to get all 16 lanes to work.
 

Obakemono

Trash Compacter
Jan 20, 2019
49
33
I wouldn't say that means all cables are out, my wife had to force pcie 2 with the shift's cable to get her pc to boot. I think it's just a poor quality cable. I tried using it with my mb and gpu and it booted but at pcie 3 x8, I had to go to pcie 2 to get all 16 lanes to work.
Yes, the cable in the shift (the old one, it seems there is a new one out for the case) is not the best. Once you fold it over to a shape it has to stay that way, as I found out the hard way.

O
 

jpmomo

Caliper Novice
Feb 23, 2018
28
39
Can you elaborate where you bought it? I have contacted a vendor but they said they wont have them in the states till end of september. At the moment I need one now for a server build.....
worked with asrock rack folks directly as we are prototyping a new device and needed to validate a few metrics.
 
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