Help not enough pcie 8 pins

[BoneDaddy]

Hey guys! I just bought an 5700xt rog strix oc, but I didnt check what the PCI pin connector requirements were. I looked at a few and I think they had 1 x 8 pin and 1 x 6 pin connectors.
 

Anyway this one has 2 x 8 pin connectors but my old psu only has 1, and 1 6 pin. Im thinking about buying an adapter for 6 to 8 pin tomorrow but im not sure if my psu Will be up to the task, and if the card Will run if i do. My specs are:

 

ryzen 3600x

rog strix b450 gaming f

16gb Ddr4 3200mhz ram

2xssd

1x7200rpm hdd

Xfx pro 550w psu (85 rated i think)

upgraded from 1060 6gb MSI gaming x to 5700 xt rog strix (not tested yet, due to no adapter)

sorry if this is a bad post or posted on wrong Page (im new here)

[Tristerin]

I would get 2x Molex to 8 pin.

 

6 pin delivers up to 75w

8 pin delivers up to 150w (double, may melt the adapter if it puts that current through or just crash)

4 pin molex delivers up to 132w on the 12v pins (from the way I understand it)

 

And since you are adding restriction in the current by using an adapter that's why I suggest getting a 2x molex to 8 pin so it shares the burden (and doesn't melt under load ) 

 

Just an FYI I just bought 2 of these 2x molex to 8 pin for a rig for these exact reasons described above.

 

 

However there are much more intelligently versed people here so wait till they also chime in

[PeterPorker3]

4 hours ago, Tristerin said:

I would get 2x Molex to 8 pin.

 

6 pin delivers up to 75w

8 pin delivers up to 150w (double, may melt the adapter if it puts that current through or just crash)

4 pin molex delivers up to 132w on the 12v pins (from the way I understand it)

 

And since you are adding restriction in the current by using an adapter that's why I suggest getting a 2x molex to 8 pin so it shares the burden (and doesn't melt under load ) 

 

Just an FYI I just bought 2 of these 2x molex to 8 pin for a rig for these exact reasons described above.

 

 

However there are much more intelligently versed people here so wait till they also chime in

This will work fine, there are dual sata to 8 pin adapters, but I would advise against those because most of them have the crappy molded plastic SATA connectors that created the saying "molex to sata loose all your data," and I couldn't find any adapters on amazon that had the better crimped sata power connectors.

[BoneDaddy]

4 minutes ago, Tristerin said:

I would get 2x Molex to 8 pin.

 

6 pin delivers up to 75w

8 pin delivers up to 150w (double, may melt the adapter if it puts that current through or just crash)

4 pin molex delivers up to 132w on the 12v pins (from the way I understand it)

 

And since you are adding restriction in the current by using an adapter that's why I suggest getting a 2x molex to 8 pin so it shares the burden (and doesn't melt under load ) 

 

Just an FYI I just bought 2 of these 2x molex to 8 pin for a rig for these exact reasons described above.

 

 

However there are much more intelligently versed people here so wait till they also chime in

Hmm interesting, I asume you have no problems with Molex adapters? 
 

if no one else says go ahead on my plan I guess i’ll have to do the same as you, but its gonna take me like an hour more in travel time:(

Im not patient enough to order it online now that I have the card.

But im still not sure if my psu is strong enough though. Thanks for the input!:)

[Tristerin]

Just now, BoneDaddy said:

Hmm interesting, I asume you have no problems with Molex adapters? 
 

if no one else says go ahead on my plan I guess i’ll have to do the same as you, but its gonna take me like an hour more in travel time:(

Im not patient enough to order it online now that I have the card.

But im still not sure if my psu is strong enough though. Thanks for the input!:)

PSU is plenty strong enough.  65w CPU, 5700xt 225w (and you are right, 6 + 8 pin is what they should come in btw - maybe yours is a factory OC?) and 15-20w for ODD,HDD,SSD, fans.

 

Heres the thing - you can try anything I.E. slot gives 75w, 8 pin gives 150 (that's the 225) then hope that the other 8 pin slot doesn't draw more than 75w and your 6 pin to 8 pin will work just fine.

 

BUT I have the same option as you (free 6 pin), and knowing what I know I went with 2x Molex to 8 pin (bought 2, only needed 1, got the second cause I may need one in the future and it was super cheap shipped).  Im powering an R9 Fury Nitro+ so couldn't take the risk with a 6 pin to 8 pin with that power hungry manimal.

[Tristerin]

13 minutes ago, PeterPorker3 said:

This will work fine, there are dual sata to 8 pin adapters, but I would advise against those because most of them have the crappy molded plastic SATA connectors that created the saying "molex to sata loose all your data," and I couldn't find any adapters on amazon that had the better crimped sata power connectors.

Yup that's why I suggest split molex since molex theoretically can handle the power delivery, the pins/resistance/shitty housing probably cannot over sustained duration

[BoneDaddy]

8 minutes ago, Tristerin said:

PSU is plenty strong enough.  65w CPU, 5700xt 225w (and you are right, 6 + 8 pin is what they should come in btw - maybe yours is a factory OC?) and 15-20w for ODD,HDD,SSD, fans.

 

Heres the thing - you can try anything I.E. slot gives 75w, 8 pin gives 150 (that's the 225) then hope that the other 8 pin slot doesn't draw more than 75w and your 6 pin to 8 pin will work just fine.

 

BUT I have the same option as you (free 6 pin), and knowing what I know I went with 2x Molex to 8 pin (bought 2, only needed 1, got the second cause I may need one in the future and it was super cheap shipped).  Im powering an R9 Fury Nitro+ so couldn't take the risk with a 6 pin to 8 pin with that power hungry manimal.

Yeah its oc and can reach 279w at Furmark acording to techpowerup, less during regular use tho. Guess it’ll be fine and im gonna go for 6->8pin for the science (and the part of me that hates the bus and is super lazy). Thanks for the help, appreciate it:)

[BoneDaddy]

Ok update time. I bought 6->8pin adapter/converter and it works fine if anyone ever wonders. Also 550w psu works fine with a reasonably high overclocked 5700 xt.