Hi all. As the title said, I'm looking for options of PSU that support dual 12VHPWR.
The story is I was trying to help a professor (a good one) doing his work of rendering (modeling as he said) and after reading some of the software manual it stated that it supported dual GPU for faster process. Also I found in Youtube (57gJvskWvPA, "Two GPUs in a Desktop computer, x8 PCIE Performance.") that a dual RTX3070s system was faster than a single RTX3090 one. Thus I built a system of dual RTX4080 Supers (Zotac) instead of buying single RTX4090. Time was very important here, but the budget was still needed careful planning.
After some consideration I used AMD Ryzen 9 7900 (65W) and MSI B650 Gaming Plus Wifi, paired with Corsair RM1000e in an open chassis. For the second 12VHPWR I used a converter from dual 8-pins to single 12VHPWR, and it worked. When the professor ran the rendering he said that the system was fast, it could finish the job in 3 days instead of his estimation of 2 weeks. So glad to hear the news.
However, after 5 hours he called me said that the system suddenly turned off abruptly, and sadly I couldn't be there to analyse it. Within an hour he called one more time saying he could turn on the system and ran another process, but this time it reported to be finished in 6 days (5 days in the end). The process couldn't be paused for some inspection so we waited until everything was done then I checked.
There I found the GPU with dual 8-pins converter couldn't turn on. The LED was on but the fan was off, and the system couldn't detect the second RTX4080 Super. I tried swapping GPU slots, swapping the 12VHPWRs, turned on with single 12VHPWR (for each), and each time it was the one with converted 12VHPWR that didn't turnn on.
So I was planning to change into a larger power PSU, but thinking it would be best to have dual 12VHPWR natively. So is there any?
The story is I was trying to help a professor (a good one) doing his work of rendering (modeling as he said) and after reading some of the software manual it stated that it supported dual GPU for faster process. Also I found in Youtube (57gJvskWvPA, "Two GPUs in a Desktop computer, x8 PCIE Performance.") that a dual RTX3070s system was faster than a single RTX3090 one. Thus I built a system of dual RTX4080 Supers (Zotac) instead of buying single RTX4090. Time was very important here, but the budget was still needed careful planning.
After some consideration I used AMD Ryzen 9 7900 (65W) and MSI B650 Gaming Plus Wifi, paired with Corsair RM1000e in an open chassis. For the second 12VHPWR I used a converter from dual 8-pins to single 12VHPWR, and it worked. When the professor ran the rendering he said that the system was fast, it could finish the job in 3 days instead of his estimation of 2 weeks. So glad to hear the news.
However, after 5 hours he called me said that the system suddenly turned off abruptly, and sadly I couldn't be there to analyse it. Within an hour he called one more time saying he could turn on the system and ran another process, but this time it reported to be finished in 6 days (5 days in the end). The process couldn't be paused for some inspection so we waited until everything was done then I checked.
There I found the GPU with dual 8-pins converter couldn't turn on. The LED was on but the fan was off, and the system couldn't detect the second RTX4080 Super. I tried swapping GPU slots, swapping the 12VHPWRs, turned on with single 12VHPWR (for each), and each time it was the one with converted 12VHPWR that didn't turnn on.
So I was planning to change into a larger power PSU, but thinking it would be best to have dual 12VHPWR natively. So is there any?
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