Question 1

How many  simulaneous 1080p streams might this handle, on average? how about 4k uhd?

Accepted Answer

With this board I run 1080p HDMI.  However, I can't recommend it to anyone because the "BIOS" has no CSM, compatibility support module, and you can't run an SSD (hard drive) with MBR partition.   ASROCK REFUSES TO FIX IT.   
FYI.  I have the latest BIOS-UEFI update L1.99.   I don't like using a GPT format.  NO MORE.  Will no buy any ASROCK without the legacy BIOS. ! !

Question 2

16 gb to much? i am upgradeing  my old system. games like diablo and ra3. os is linux mint in a full tower. any issues i should look out for

Accepted Answer

Intel Ark page indicates the J5005 supports a maximum of 8GB of RAM (which is what I use).  UnRAID is running like a champ on my machine with PLEX steaming to 4 devices simultaneously and providing ad blocking services with PiHole.  Ubuntu runs fine on this board but I had to use Windows10 to update the BIOS at the start.

Question 3

Can anyone confirm that this stock has the newer bios v1.40 released in the fall, or at least v1.30 that fixes the hdmi problems?

Accepted Answer

Mine did not have the latest bios, but wasn't that difficult to update. It did require shorting the jumpers on the motherboard which I needed to use a part from an old motherboard to do. I did experience  issues with hdmi, but that was resolved by changing the cable. I didn't notice any differences after updating the bios, since the cable had fixed it. I tested windows 10 and linux mint and both worked.

Question 4

How tall is the hs on this motherboard? i am looking to put it in a 1u server case.

Accepted Answer

For the ASRock J5005-ITX the height of the CPU cooler does not overpass the height of the memory modules, actually is around (and probably more than) 1mm less. The memory module's height is around 33mm (that means 1.3") measured from the motherboard's surface level. As far as I can see, these memory modules are the tallest components on the mobo. So, I believe you should go ahead with your project. Good luck !

ASIN	B079G91MQ1
Brand	ASRock
CPU Model	Pentium
Chipset Family	Intel J5005
Chipset Type	Intel
Compatible Devices	Personal Computer
Compatible Processors	Intel Pentium
Customer Reviews	4.5 4.5 out of 5 stars (216)
Global Trade Identification Number	04717677334876
Graphics Card Interface	Integrated
Item Weight	600 g
Main Power Connector Type	24-Pin
Manufacturer	ASRock
Memory Clock Speed	2400 MHz
Memory Slots Available	2
Memory Storage Capacity	64 GB
Mfr Part Number	J5005-ITX
Model Name	ASRock J5005-ITX
Model Number	J5005-ITX
Number of Items	1
Number of Ports	4
Platform	Windows 10
Processor Socket	LGA 1151
RAM Memory Technology	DDR4
System Bus Standard Supported	SATA 3
Total PCIe Ports	1
Total SATA Ports	4
Total Usb Ports	4
USB 2.0	4

ASRock J5005-ITX Intel Quad-Core Pentium Silver Processor (Up to 2.8 GHz) Motherboards

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