[SOLVED] 4 RTX 3090 + 4 GTX 1660 using T-Rex miner and mining always crashes

[pandoinkrypique]

Hi all,

my mining rig consists of:

• QWERTY B250 with 12 PCIe slots
• intel LGA1151 skylake
• RAM 8 gb
• SSD sata 512 gb
• 1x PSU 2000 watt
• 4x RTX 3090
• 4x GTX 1660

I use t-rex miner 0.24.2 and I can only utilize 53-60% pl of all GPUs. The cases are:

• when I increase pl to 70%, windows goes blue and restarts
• when I overclock one or more RTX under 53-60%, t-rex shows error warning, closes the miner and one or more GPU won't be detected so I must restart the rig.

have anyone ever experienced the same issue? or could anyone help me to solve this? Thank you.

 

[kerberos_20]

you might need second PSU, 2kW PSU is not enough for your GPUs

 

[--SID--]

1x PSU 2000 watt

Brand and model?

Is it some garbage PSU like

or

?

 

[pandoinkrypique]

Hi,

I added another psu (corsair rm750) to the existing 2000w psu, and there’s no difference.
I started over and tried to add one by one gpu, starting with 3090. all 4x 3090s run well mining, but when I added 1x 1660, my rig crashed. the blue screen message is whea uncorrectable error. I browsed that it might occur due to cpu error, but I have no idea why only happens when I mix 1660 and 3090.

please help

 

[avg9956]

1x PSU 2000 watt

Indeed very suspicious, I have never yet encountered a branded 2K watt PSU in use for a mining rig.

Hmmm your Qwerty B250 motherboard
I could not find a support page for this. Googling it, it seems to be in popular use in Indonesia.
I highly suspect that Qwerty motherboard is just a Chinese home grown electronic, but has no proper driver support. I cannot find the website for the "Qwerty" brand either.
Who knows as well if there's any other inherent issues with that Qwerty motherboard such as faulty power delivery system/VRMs or any other defect.

Better alternative GPU-mining motherboards.
https://www.techradar.com/best/mining-motherboards

 

[kerberos_20]

Hmmm your Qwerty B250 motherboard
I could not find a support page for this. Googling it, it seems to be in popular use in Indonesia.
I highly suspect that Qwerty motherboard is just a Chinese home grown electronic, but has no proper driver support. I cannot find the website for the "Qwerty" brand either.
Who knows as well if there's any other inherent issues with that Qwerty motherboard such as faulty power delivery system/VRMs or any other defect.

its a rebrand, search for BTC 250 gladiator ES which is china

 

[avg9956]

My guess was correct then