7th July 2020, 3 min read

ASRock DeskMini A300M with AMD Ryzen 3400G

Below are some photographs during assembly of the Asrock A300M with an AMD Ryzen 5 Pro 3400G processor.

The Asrock website detailing the specs of the A300M: DeskMini A300 Series.

Three noticable reviews on the A300M:

1. Anandtech has a very readable review of the A300M: Home> Systems The ASRock DeskMini A300 Review: An Affordable DIY AMD Ryzen mini-PC
2. A short review from Techspot: Asrock DeskMini A300 Review.
3. A German review with many photos during assembly: ASRock DeskMini A300 mit AMD Ryzen 5 2400G im Test.

1. CPU. Three photos from the AMD 3400G CPU:

2. Power. The power supply of the A300M will provide at most 19V x 6.32A = 120W.

3. Dimensions. The case has volume of at most two liters, exemplified by the two milk cartons.

4. Mounting. CPU mounted on motherboard.

5. Temperature. I installed a Noctua NH-L9a-AM4 cooler. Running the AMD at full speed with full load shows the following temperature using command sensors:

amdgpu-pci-0300
Adapter: PCI adapter
vddgfx:           N/A
vddnb:            N/A
edge:         +85.0°C  (crit = +80.0°C, hyst =  +0.0°C)

k10temp-pci-00c3
Adapter: PCI adapter
Vcore:         1.23 V
Vsoc:          1.07 V
Tctl:         +85.2°C
Tdie:         +85.2°C
Icore:       100.00 A
Isoc:          9.00 A

nvme-pci-0100
Adapter: PCI adapter
Composite:    +57.9°C  (low  =  -0.1°C, high = +74.8°C)
                       (crit = +79.8°C)

nct6793-isa-0290
Adapter: ISA adapter
in0:                   656.00 mV (min =  +0.00 V, max =  +1.74 V)
in1:                     1.86 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in2:                     3.41 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in3:                     3.39 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in4:                   328.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in5:                   216.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in6:                   448.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in7:                     3.39 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in8:                     3.30 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in9:                     1.84 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in10:                  256.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in11:                  216.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in12:                    1.86 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in13:                    1.71 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in14:                  272.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
fan1:                     0 RPM  (min =    0 RPM)
fan2:                  2626 RPM  (min =    0 RPM)
fan3:                     0 RPM  (min =    0 RPM)
fan4:                     0 RPM  (min =    0 RPM)
fan5:                     0 RPM  (min =    0 RPM)
SYSTIN:                 +97.0°C  (high =  +0.0°C, hyst =  +0.0°C)  sensor = thermistor
CPUTIN:                 +87.5°C  (high = +80.0°C, hyst = +75.0°C)  ALARM  sensor = thermistor
AUXTIN0:                +62.0°C  (high =  +0.0°C, hyst =  +0.0°C)  ALARM  sensor = thermistor
AUXTIN1:                +94.0°C    sensor = thermistor
AUXTIN2:                +90.0°C    sensor = thermistor
AUXTIN3:                +86.0°C    sensor = thermistor
SMBUSMASTER 0:          +85.0°C
PCH_CHIP_CPU_MAX_TEMP:   +0.0°C
PCH_CHIP_TEMP:           +0.0°C
PCH_CPU_TEMP:            +0.0°C
intrusion0:            OK
intrusion1:            ALARM
beep_enable:           disabled

Fully loaded:

  1  [||||||||||||||||||||||||||||||||||||||||                            52.9%]   Tasks: 120, 405 thr; 5 running
  2  [||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||99.4%]   Load average: 7.28 6.82 6.02
  3  [||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||99.4%]   Uptime: 8 days, 07:27:51
  4  [||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||94.1%]
  5  [|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%]
  6  [||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||  88.2%]
  7  [|||||||||||||||||||||||||||||||||                                   44.2%]
  8  [|||||||||||||||||||||||||||||||||||||||                             50.6%]
  Mem[|||||||||||||||||||||||||||||||||||||||||||||||||||||||       28.7G/60.8G]
  Swp[                                                                    0K/0K]

6. Cost breakdown. I bought case and CPU from Mindfactory, fan and SSD from Alternate, RAM from Amazon. At that time during the CoVID pandemic hardware was not easily available.

Added, 22-Aug-2020: I noticed that the A300M motherboard has a very significant clock lag. So you are requried to run ntpdate or timesyncd.