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How to connect a Vega 56 without PSU Mod ? | MacRumors Forums
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MP 1,1-5,1 How to connect a Vega 56 without PSU Mod ?
Mar 26, 2022
I'd like to upgrade my Mac Pro 5.1.
I currently have a RX 560 , and i want the strongest GPU without PSU Mod (i don't know how to do the pixlas mod, and i don't feel confident about it ).
I could see the Vega 56 is pretty worth it, especially compared to RX560.
I am wondering idiot question : How to connect it. ? My RX560 doesn't have any connector, just the PCIexpress port .
I found this : https://www.amazon.fr/gp/product/B07F62CHYF/ref=ox_sc_saved_image_1?smid=A2SBSMJWADKVNX&psc=1 (Sorry for french language, but i think you can see what it is ).
If i use this cable, it means i must "sacrifice" 2 sata port to power up the GPU, right ?
I could find this also : https://www.amazon.fr/Broches-Expre...-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1
Can i use it to connect to power up the GPU ?
Thanks
I currently have a RX 560 , and i want the strongest GPU without PSU Mod (i don't know how to do the pixlas mod, and i don't feel confident about it ).
I could see the Vega 56 is pretty worth it, especially compared to RX560.
I am wondering idiot question : How to connect it. ? My RX560 doesn't have any connector, just the PCIexpress port .
I found this : https://www.amazon.fr/gp/product/B07F62CHYF/ref=ox_sc_saved_image_1?smid=A2SBSMJWADKVNX&psc=1 (Sorry for french language, but i think you can see what it is ).
If i use this cable, it means i must "sacrifice" 2 sata port to power up the GPU, right ?
I could find this also : https://www.amazon.fr/Broches-Expre...-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1
Can i use it to connect to power up the GPU ?
Thanks
velocityg4
macrumors 604
Dec 19, 2004
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Georgia
Don't do that. SATA power connectors are not designed to handle that much current. Just because someone makes something. Doesn't mean it is safe. SATA is designed for 54W, 6 pin PCIE is designed for 75W, 8 pin PCIe is designed for 150W. Also those SATA lines are likely on one rail with a total limit of 75W.
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Farravi
Mar 26, 2022
Sure, i understand.
So, what is the best solution in that case ?
So, what is the best solution in that case ?
For Vega56, connect the GPU in this way should be good enoughSure, i understand.
So, what is the best solution in that case ?
How to - downvolt a Radeon VII
Can. However, my recommendation is balancing the demand between the mini 6pins. If you re-read my post #35 again, you should able the see that the power draw via each mini 6pin is very balanced. The reason is because I use a cable combination to balance the demand. "DUAL mini 6pin -> Single...
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Macschrauber
I am not a technician nor an engineer and was also not confident about the pixlas mod but plunged in and followed the countless resources that help step by step and successfully upgraded.
It was not the easiest upgrade, if anything it was fidgety and I couldn’t get my hands in certain places but perseverance got me through it. If I did it, so can anyone else.
It was not the easiest upgrade, if anything it was fidgety and I couldn’t get my hands in certain places but perseverance got me through it. If I did it, so can anyone else.
there are several threads on this forum describing in detail how to connect the Vega 56.
just use the "search the forum" function at the top of the page.
1. On vega 56 move the BIOS switch to low power mode
2. buy evga powerlink and use two mini 6pin to 6 pin power cables to deliver power. you do not need mini 6 pin to 8 pin cables but if you have them then use them.
3. make sure you use mavericks or newer OS because it contains the latest drivers. Do not use the older OS because the power efficiency of the drivers is not good.
just use the "search the forum" function at the top of the page.
1. On vega 56 move the BIOS switch to low power mode
2. buy evga powerlink and use two mini 6pin to 6 pin power cables to deliver power. you do not need mini 6 pin to 8 pin cables but if you have them then use them.
3. make sure you use mavericks or newer OS because it contains the latest drivers. Do not use the older OS because the power efficiency of the drivers is not good.
Mar 26, 2022
Thank you for your answer, i saw lot of things, a bit confusing because i'm quite a beginner in CMP 5.1 .
How to move the bios switch to low power mode ? Should i use Windows for this, or is there another way from Mac ?
How to move the bios switch to low power mode ? Should i use Windows for this, or is there another way from Mac ?
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