I thought VRMs could handle well in excess of 100°C? I get that 90 isn't particularly good, but it certainly shouldn't be a problem. But perhaps you could do something about your CPU cooler mounting so that its fan blows more air onto the VRM heatsink?@GLSRacer thanks for your sharing your experiences, much appreciated! If you are running as a server I would not expect much GPU load to be seen by you and thus no issues either.
On the temp issue, I have just breadboarded the thing and have applied the latest in precision temperature measurement equipment (my right index and middle fingers) and spot cooling solutions (blowing on stuff). I have come to the conclusion that the Nuvoton sensor on the A300 labeled "CPU" must be reading SOC VRM temps, or somewhere really close to that area of the board.
First I removed the VRM heatsink and fired up a CPU stresstest while observing the sensor readings. CPU internal sensor went up as expected and Nuvoton CPU sensor stayed almost flat as expected. The 3 MOSFETS that supply CPU core voltage got very warm to the touch but not to the point of being painfully hot.
I then used furmark to perform the same check for GPU. While GPU internal sensor did climb slowly, the Nuvoton "CPU" sensor hit 50°C almost immediately and only went up from there, I tested up to 72°C reading. The SOC VRM MOSFETS got increasingly hot to the touch to the point where leaving the fingers on for a couple seconds got painfully hot. Blowing on the SOC VRM area at this point did cause the sensor reading to drop almost 10°C. Blowing anywhere else onto the board (CPU VRM, around the socket, around the RAM etc.) would not cause a drop in temperature.
Lastly I remounted the VRM heatsink and ran Furmark again. The same sensor that easily hit 72°C previously appeared to settle into steady state at around 62°C, further supporting that the temp reading is VRM related.
So yeah, still not quite sure what to make of it. I may have had a bad mount with the VRM heatsink. Or i may have a bad batch of SOC VRM MOSFETS. Or this is just normal, even though I don't think 90°C on VRMs is great. I'll have to put it back into the case to see if it has changed, the delta between GPU temp and "CPU" sensor temp was only 20°C without case after remounting the VRM cooler, that is 10°C less delta than before.
Generally thermals outside of the case are soooo good by the way.
I would still love to hear anyone elses observations (also on the SOC voltage thing, I will do more tests there as well).
Thanks!, that 3000G with it's 3CU Vega got the sensor to 51°C. That is obviously fine by itself, not sure how it would look like for an 8CU or 11CU part.<screenshot of HWiNFO64 after stress testing>
Yeah, the specsheet for the particular MOSFETS in the A300 lists 125°C max as the recommended operating temperature. But it also lists that safe operating area (in terms of max current output for a given board temp) starts to take a dive at around 95°C. It really depends on a lot of factors, like the thickness of the board copper layers, whether it's horizontally or vertically mounted and so forth. I do not pretend to able to derive firm conclusions from the specsheet If there were even one or two other sample A300 owners with a 2400G / 3400G which see the same or similar temps on the sensor as me I would know that my particular unit is at least operating like everyone else'sI thought VRMs could handle well in excess of 100°C? I get that 90 isn't particularly good, but it certainly shouldn't be a problem. But perhaps you could do something about your CPU cooler mounting so that its fan blows more air onto the VRM heatsink?
[[email protected] ~]# sensors amdgpu-pci-0300 Adapter: PCI adapter vddgfx: N/A vddnb: N/A edge: +30.0°C (crit = +80.0°C, hyst = +0.0°C) k10temp-pci-00c3 Adapter: PCI adapter Tdie: +30.2°C (high = +70.0°C) Tctl: +30.2°C nct6793-isa-0290 Adapter: ISA adapter in0: 392.00 mV (min = +0.00 V, max = +1.74 V) in1: 1.85 V (min = +0.00 V, max = +0.00 V) ALARM in2: 3.39 V (min = +0.00 V, max = +0.00 V) ALARM in3: 3.39 V (min = +0.00 V, max = +0.00 V) ALARM in4: 248.00 mV (min = +0.00 V, max = +0.00 V) ALARM in5: 128.00 mV (min = +0.00 V, max = +0.00 V) ALARM in6: 872.00 mV (min = +0.00 V, max = +0.00 V) ALARM in7: 3.39 V (min = +0.00 V, max = +0.00 V) ALARM in8: 3.23 V (min = +0.00 V, max = +0.00 V) ALARM in9: 1.83 V (min = +0.00 V, max = +0.00 V) ALARM in10: 176.00 mV (min = +0.00 V, max = +0.00 V) ALARM in11: 128.00 mV (min = +0.00 V, max = +0.00 V) ALARM in12: 1.85 V (min = +0.00 V, max = +0.00 V) ALARM in13: 1.70 V (min = +0.00 V, max = +0.00 V) ALARM in14: 184.00 mV (min = +0.00 V, max = +0.00 V) ALARM fan1: 0 RPM (min = 0 RPM) fan2: 813 RPM (min = 0 RPM) fan3: 0 RPM (min = 0 RPM) fan4: 0 RPM (min = 0 RPM) fan5: 0 RPM (min = 0 RPM) SYSTIN: +118.0°C (high = +0.0°C, hyst = +0.0°C) sensor = thermistor CPUTIN: +41.5°C (high = +80.0°C, hyst = +75.0°C) sensor = thermistor AUXTIN0: +33.0°C (high = +0.0°C, hyst = +0.0°C) ALARM sensor = thermistor AUXTIN1: +111.0°C sensor = thermistor AUXTIN2: +110.0°C sensor = thermistor AUXTIN3: +111.0°C sensor = thermistor SMBUSMASTER 0: +30.0°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
Maybe this help you little bit.Hi All, I wanted to share these links as the could be helpful.
I believe this one has been posted before but this is an alternative option for the extra usb header cable
I haven't tried it, but I was looking for the an alternative rear audio cable and found this which I believe will work.
I was unable to find the screw size for both the rear audio cable and the extra usb port mounts? That's my only worry as these don't come with screws.
Does anyone know the size?
Thanks, that with google translate is answered my question!Maybe this help you little bit.
Following Link is from an german forum, was written by me ...
Für den NUC habe ich den Test oben verlinkt, es sind etwa 6W im Idle und 74W bei Volllast, was dann nach einigen Sekunden auf 48W drosselt. Dabei geht natürlich auch die Performance runter. Der NUC leistet 155/779 (1T/nT) im Cinebench. Beim Ryzen-System mit der GT 1030 fehlt noch die SSD. Auch...www.computerbase.de
so you are 100% sure that renoir apus will be supported. good to hear and hopefully we get more info about the desktop apu lineup soon.Finally my replacement A300 arrived after two weeks of shipping madness inside the local DHL distribution center.
With BIOS 3.50 it works out of the box with an Athlon 3000G. In the coming weeks I will assemble my temporary setup untill the Renoir APUs arrive.
No, I am not, but my order was placed a month ago before the equestion came up here. Since the A300 has no actual chipset while the Renoirs keep the AM4 socket and the Vega graphics, I see no obstacle for compatibility beyond BIOS updates.so you are 100% sure that renoir apus will be supported. good to hear and hopefully we get more info about the desktop apu lineup soon.