Can mix pcie and molex same time ? is molex safe ?

[commandera]

Hello
 power supply corsair AX 1600w Titanium

This PSU include x8 PCIE
x2 of this 8 cables can power 4 GPU or riser is like Y direct to power supply
So if powered x4 Riser by this x2 cables

i will have free x6 pcie
when i power GPU 4 , i will have free x2 pcie

So can i power Molex for Riser and use x2 pcie for GPU ?

Basically Molex is safe to power Riser ? i know sata is not but talking about molex


and i already have this cable
https://www.amazon.com/gp/product/B0776PMH16/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

I can use it to power riser
x1 pcie (the Y include with power ) to this Y-Splitter ( the link )can power x4 Riser and power x4 pcie for GPU's
Then will have x3 pcie cable but can power x4 GPU because one of them like Y
So here i can use x4 Cards but i need to power riser by molex  Total 8 GPU x4 by pcie and x4 by molex , safe ?

[NotFuzzyWarm]

Molex is the manufacturer of the PCIe connectors - not a type of connector.
You are talking about using 6-pin PCIe to 8-pin PCIe cable. Only difference is that the 8-pin have 2 extra return/ground pins. As for safe, depends on their construction & current ratings. Top-quality PCI connectors with gold or silver plated pins along with using 16ga copper wire can handle up to 5A per-pin. Since both types have only 3 power pins that = 15A per connector.

El'cheapo connectors with simple nickle plated or even just brass pins along with thinner and/or aluminum wire top out at 3A max per power pin.

[commandera]

Molex is the manufacturer of the PCIe connectors - not a type of connector.
You are talking about using 6-pin PCIe to 8-pin PCIe cable. Only difference is that the 8-pin have 2 extra return/ground pins. As for safe, depends on their construction & current ratings. Top-quality PCI connectors with gold or silver plated pins along with using 16ga copper wire can handle up to 5A per-pin. Since both types have only 3 power pins that = 15A per connector.

El'cheapo connectors with simple nickle plated or even just brass pins along with thinner and/or aluminum wire top out at 3A max per power pin.

My power Supply is Titanium 1600w

and i'm sorry i mean peripheral cable include in PSU package
https://imgur.com/a/qbBExT0


After few checking I tell you now ,

please focus here , I have total x10 pcie ( 8 Cables )

The RX 5700 x1 pcie for riser x1 for GPU
now have x8 pcie

x1 pcie include in PSU is already Y can use 2 GPU
i will plug x2 6 Pin to Dual PCIe 8 Pin (6+2) Graphics Card PCI Express Power Adapter ( the link )
will have 4 Riser

now have 7 pcie single
install GPU in 4 Riser and install GPU and use x4 pcie

now i have x3 pcie free
thinking what to do about this x3
I can use second 5700 x1 pcie for riser x1 for GPU

Now have x1 pcie free
do i can use peripheral cable to power Riser
and x1 free for 5700 or 580 or whatever

[NotFuzzyWarm]

Without knowing what make/model of PSU it is there is no way for folks to give a solid answer.
Check the data sheet/manual for it. All the specs should be in there...
As this hardware deals with mining altcoins and not BTC, have asked the mods to move this to the altcoin mining area where it belongs.

[commandera]

Without knowing what make/model of PSU it is there is no way for folks to give a solid answer.
Check the data sheet/manual for it. All the specs should be in there...
As this hardware deals with mining altcoins and not BTC, have asked the mods to move this to the altcoin mining area where it belongs.

the power supply is

AX1600i Digital ATX Power Supply — 1600 Watt Fully-Modular PSU


https://www.corsair.com/ww/en/Categories/Products/Power-Supply-Units/axi-series-config/p/CP-9020087-NA

i will move the thread but still haven't idea about peripheral cable to power Riser
mining for ETH

will move threads

[deadsix]

and i already have this cable
https://www.amazon.com/gp/product/B0776PMH16/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

I can use it to power riser
x1 pcie (the Y include with power ) to this Y-Splitter ( the link )can power x4 Riser and power x4 pcie for GPU's
Then will have x3 pcie cable but can power x4 GPU because one of them like Y
So here i can use x4 Cards but i need to power riser by molex  Total 8 GPU x4 by pcie and x4 by molex , safe ?

If you have the above Pcie splitter cables, just use the 6+2 pin cables coming out of the PSU and use these splitters on them, plug one end of the Y to plug into the GPU, the other to the riser. If your cables are 18awg they should easily handle an rx 5700. (as long as you can keep per gpu load under 200w)

Just FYI, you CAN use molex powered and even sata powered risers with all modern gpus. The problem of sata being unsafe was specifically because idiots were using sata to molex adapters that came free with molex powered risers. The Rx 480's were drawing an unusually large amount of amps from the PCIe slot (and thus the riser) causing the trash sata-molex adapters to burn. As long as you do not use any adapters on the risers you'll be fine.

[commandera]

and i already have this cable
https://www.amazon.com/gp/product/B0776PMH16/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

I can use it to power riser
x1 pcie (the Y include with power ) to this Y-Splitter ( the link )can power x4 Riser and power x4 pcie for GPU's
Then will have x3 pcie cable but can power x4 GPU because one of them like Y
So here i can use x4 Cards but i need to power riser by molex  Total 8 GPU x4 by pcie and x4 by molex , safe ?

If you have the above Pcie splitter cables, just use the 6+2 pin cables coming out of the PSU and use these splitters on them, plug one end of the Y to plug into the GPU, the other to the riser. If your cables are 18awg they should easily handle an rx 5700. (as long as you can keep per gpu load under 200w)

Just FYI, you CAN use molex powered and even sata powered risers with all modern gpus. The problem of sata being unsafe was specifically because idiots were using sata to molex adapters that came free with molex powered risers. The Rx 480's were drawing an unusually large amount of amps from the PCIe slot (and thus the riser) causing the trash sata-molex adapters to burn. As long as you do not use any adapters on the risers you'll be fine.

The Y cable the link i use them only to power Riser
like this image
https://imgur.com/a/kT2FKaZ


will have another story and changing the rig if this yellow cable Y can use x1 for riser x1 for GPU same time ?
I really did not expect that
do the image in this link is fine for
580 and 570 ?
https://imgur.com/a/H13Y2PP

[deadsix]

The Y cable the link i use them only to power Riser
like this image
https://imgur.com/a/kT2FKaZ

Yes, but remember, one cable coming from the PSU should run ONE GPU (the image shows two GPUs connected to 1 cable). The Corsair 1600w PSU has 8 PCIe cables each with 2 x 6+2 connectors But you should run ONLY one GPU per cable, for a total of 8 GPUs.

do the image in this link is fine for
580 and 570 ?
https://imgur.com/a/H13Y2PP

Yes this is what I meant, this is perfectly fine for a GPU drawing under 200w power.


For the future, buy 8 pin to 2 x 6+2 pin splitters, not the 6pin to 2x6+2 that you have. Also look if you can find 16awg cables instead of 18awg. Safer.

[commandera]

The Y cable the link i use them only to power Riser
like this image
https://imgur.com/a/kT2FKaZ

Yes, but remember, one cable coming from the PSU should run ONE GPU (the image shows two GPUs connected to 1 cable). The Corsair 1600w PSU has 8 PCIe cables each with 2 x 6+2 connectors But you should run ONLY one GPU per cable, for a total of 8 GPUs.

do the image in this link is fine for
580 and 570 ?
https://imgur.com/a/H13Y2PP

Yes this is what I meant, this is perfectly fine for a GPU drawing under 200w power.


For the future, buy 8 pin to 2 x 6+2 pin splitters, not the 6pin to 2x6+2 that you have. Also look if you can find 16awg cables instead of 18awg. Safer.

I not see any issues here
powered to 580 and in phoinex x3 580
80w + 80w + 85w

and i have checked the cable is not warm, and 580's modded

and my psu i asked corsair about slots

This psu have x10 pcie&cpu connector in PSU, i have asked corsair about which for GPU and which for CPU
they answer me : Good day, thanks for bringing this up to us, You have 10 PCIE&CPU connectors available you can use those ports for your GPU PCIE and for CPU as well.

That mean x1 cpu and i have x8 pcie , have one free can order from them

So for safe pcie cable power Riser for 5700

why ?
i tried this adapter to power Riser for 5700 not boot black screen with (-)
why?
i asked the seller at Amazon about cable adapter
"How much max watt can do this splitter ??"
TeamProfitcom answered:
"Max Power Rating: 150W"
When start mine before power limit the 5700 did 150w+ adjusting and testing now 116w 53 mh/s


total 7 GPU if order pcie from Corsair will have 8

Single pcie power Riser and power 5700
( now have 6 cables )

one cable x2 6+2 use adapter to power riser will have x4 risers
( have 5 cables )

one cable x2 6+2 power x2 580 ,
( now have 4 cable ) now 2 risers


again now use 2 pcie for another 2 GPU 580
( now have 2 pcie ) no Riser anymore

now 5 GPU's

have 2 free pcie ,  power riser by 2 molex and power GPU by pcie total 7 GPU

and also if i order pcie from Corsair will have 8 GPU ( have third molex cable to power riser )