Using HX1200i for 2x MSI 2080 ti trio's SLI

[gamingredd]

Here is my build https://pcpartpicker.com/user/TheGamingREDD/saved/JQcRJx

So with the MSI 2080 ti Trio's i've noticed that it requires 2x8 and 1x6 for each card while running 2 cards in SLI I would need double that. The PSU im using (HX1200i) has 6x 6+2 pins and 6x 6 pins with one 6+2 pins for my CPU power can I use one of the 6 pins (SATA & PERIPHAL) to power the 6 pin connections on the GPU's?

 

[bmockeg]

All 6+2 are pcie. CPU is 4+4. You can use 6+2 or 6 pin to power the 6pin, they will provide the needed power either way.

 

[gamingredd]

All 6+2 are pcie. CPU is 4+4. You can use 6+2 or 6 pin to power the 6pin, they will provide the needed power either way.

bmockeg thanks for the response, I just wanna make sure the 6 pin sata and peripheral connections on the PSU are wired the same way as the 6 pin connection the the GPU so I dont fry anything

 

[jonnyguru]

All 6+2 are pcie. CPU is 4+4. You can use 6+2 or 6 pin to power the 6pin, they will provide the needed power either way.

bmockeg thanks for the response, I just wanna make sure the 6 pin sata and peripheral connections on the PSU are wired the same way as the 6 pin connection the the GPU so I dont fry anything

They're not.

The 6-pin SATA/PATA connectors have +12V, +5V and +3.3V. PCIe has only +12V.

You cannot use the SATA/PATA ports for PCIe.

http://www.jonnyguru.com/forums/showthread.php?t=13740

 

[gamingredd]

All 6+2 are pcie. CPU is 4+4. You can use 6+2 or 6 pin to power the 6pin, they will provide the needed power either way.

bmockeg thanks for the response, I just wanna make sure the 6 pin sata and peripheral connections on the PSU are wired the same way as the 6 pin connection the the GPU so I dont fry anything

They're not.

The 6-pin SATA/PATA connectors have +12V, +5V and +3.3V. PCIe has only +12V.

You cannot use the SATA/PATA ports for PCIe.

http://www.jonnyguru.com/forums/showthread.php?t=13740

I see, so seems like my current PSU wont work for the job, checking against what I need seems like the AX1200I is my next closest option. Thanks for the help.

 

[jonnyguru]

All 6+2 are pcie. CPU is 4+4. You can use 6+2 or 6 pin to power the 6pin, they will provide the needed power either way.

bmockeg thanks for the response, I just wanna make sure the 6 pin sata and peripheral connections on the PSU are wired the same way as the 6 pin connection the the GPU so I dont fry anything

They're not.

The 6-pin SATA/PATA connectors have +12V, +5V and +3.3V. PCIe has only +12V.

You cannot use the SATA/PATA ports for PCIe.

http://www.jonnyguru.com/forums/showthread.php?t=13740

I see, so seems like my current PSU wont work for the job, checking against what I need seems like the AX1200I is my next closest option. Thanks for the help.

How do you figure?

You said yourself that your PSU has SIX PCIe connectors. Your cards need three each and you have two cards.

Sounds like you have the correct number of connectors.

Can you clarify why you think there are not enough?

 

[gamingredd]

How do you figure?

You said yourself that your PSU has SIX PCIe connectors. Your cards need three each and you have two cards.

Sounds like you have the correct number of connectors.

Can you clarify why you think there are not enough?[/quotemsg]

I still need to connect one 4+4 and 4 pin for CPU power to the motherboard so using all the PCI-e/CPU 4+4 connections for the GPU's would not allow me to power my CPU and the AX1200i has 8 PCI-e/CPU 4+4 connections

 

[bmockeg]

A 6+2 and,4+4 are totally different

 

[gamingredd]

A 6+2 and,4+4 are totally different

Let me reword myself, sorry about that
So after I was told that the peripheral wiring is different I double checked what my total connections would be besides accessories
1 ATX 8 pin
1 ATX 4 pin
2 6+2 pin per card
1 6+2 pin per card (with the extra 2 not connected)

So 8 pci-e connections, yet thanks to you both for the info.

 

[jonnyguru]

Ok... I see where OP is confusing us. He's calling the connectors on the PSU "PCIe connectors" when they power both PCIe and EPS12V. He needs a total of 5 of the 8-pin modular power connectors on the PSU housing itself.

OP: The HX1200 has SIX of these connectors.

You plug in one ATX12V 4-pin, one EPS12V 8-pin, and three PCIe cables (each PCIe cable has two PCIe connectors). That's five. You don't need more than that.

In fact, you have one extra connector on the HX1200. You could actually split one of the PCIe cables up.

I think you're thinking that the PSU cables are one-to-one. Do you not have the PSU already and aren't already looking at it? Because I think you're making more assumptions than you need to.

 

[jimmysmitty]

I am questioning why your GPUs that have a 300W TDP need 2 8 pin and 2 6 pin connections when it should have more than enough with just 2 8 pin connections. The power setup for PCIe is this:

75W from the slot
75W from each 6 pin
150W from each 8 pin

So your GPUs are set to do 525W each yet are rated with a TDP of 300W.

This would be more than enough for it:

75 from slot
150 from each 8 Pin

375W total power provided. That's 25% more power than the rated power consumption.

Seems like a bad design to me.

Can also confirm Johnny is correct as each PCIe cable included with the PSU has 2 connections for a total of 8.