Question Which one is my best option

Aug 9, 2021
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Hi everyone
I have a pavilion p6-2065sc and I have upgraded the psu with a SevenTeam ST550P-AF (Corsair CX550M clone) . I intent to run a GTX TITAN on it that it has 2 eight pin connectors and is a power hungry Nvidia card. The psu hasn't two eight PCIe eight pin cables has one PCIe 6+2 so here it comes the options

option 1: Can I use a Y PCIe 8 pin cable splitter to power the TITAN? https://www.amazon.com/PCI-Express-Video-Y-Splitter-Adapter-Supply/dp/B00A3OVG4W . I am afraid to be overloading the line and there some warning sites View: https://www.reddit.com/r/buildapc/comments/2g790j/psa_never_use_ysplitters_for_your_gpus_pcie/


option 2: Can I use two molex to eight pin adapters to power the TITAN? https://lagaiphone.se/shop/18cm-y-shape-8-pin-pci-express-to-dual-4-pin-molex/ . Reading this https://forums.tomshardware.com/threads/are-using-2-molex-to-8pin-power-cables-safe-for-gpu.2679141/ I don't reach any conclusion.

option 3: Provided that option 1 is too much power in one line can I mix a 6+2 PCIe connector with a Molex Y addition into 8 pin connector?

option 4: The psu also come with an eight pin connector CPU 8-pin EPS12V connector. Some people say that this is not the same sired as the PCIe 6+2 but that can be tweaked and used in place of one eight pin socket in the TITAN. Do you agree? Can I mix both connectors?

Which one do you think is my best option?
 

kanewolf

Titan
Moderator
Hi everyone
I have a pavilion p6-2065sc and I have upgraded the psu with a SevenTeam ST550P-AF (Corsair CX550M clone) . I intent to run a GTX TITAN on it that it has 2 eight pin connectors and is a power hungry Nvidia card. The psu hasn't two eight PCIe eight pin cables has one PCIe 6+2 so here it comes the options

option 1: Can I use a Y PCIe 8 pin cable splitter to power the TITAN? https://www.amazon.com/PCI-Express-Video-Y-Splitter-Adapter-Supply/dp/B00A3OVG4W . I am afraid to be overloading the line and there some warning sites View: https://www.reddit.com/r/buildapc/comments/2g790j/psa_never_use_ysplitters_for_your_gpus_pcie/


option 2: Can I use two molex to eight pin adapters to power the TITAN? https://lagaiphone.se/shop/18cm-y-shape-8-pin-pci-express-to-dual-4-pin-molex/ . Reading this https://forums.tomshardware.com/threads/are-using-2-molex-to-8pin-power-cables-safe-for-gpu.2679141/ I don't reach any conclusion.

option 3: Provided that option 1 is too much power in one line can I mix a 6+2 PCIe connector with a Molex Y addition into 8 pin connector?

option 4: The psu also come with an eight pin connector CPU 8-pin EPS12V connector. Some people say that this is not the same sired as the PCIe 6+2 but that can be tweaked and used in place of one eight pin socket in the TITAN. Do you agree? Can I mix both connectors?

Which one do you think is my best option?
The only option is to buy a power supply that has the required wattage and connectors.
 
Hi everyone
I have a pavilion p6-2065sc and I have upgraded the psu with a SevenTeam ST550P-AF (Corsair CX550M clone) . I intent to run a GTX TITAN on it that it has 2 eight pin connectors and is a power hungry Nvidia card. The psu hasn't two eight PCIe eight pin cables has one PCIe 6+2 so here it comes the options

option 1: Can I use a Y PCIe 8 pin cable splitter to power the TITAN? https://www.amazon.com/PCI-Express-Video-Y-Splitter-Adapter-Supply/dp/B00A3OVG4W . I am afraid to be overloading the line and there some warning sites View: https://www.reddit.com/r/buildapc/comments/2g790j/psa_never_use_ysplitters_for_your_gpus_pcie/


option 2: Can I use two molex to eight pin adapters to power the TITAN? https://lagaiphone.se/shop/18cm-y-shape-8-pin-pci-express-to-dual-4-pin-molex/ . Reading this https://forums.tomshardware.com/threads/are-using-2-molex-to-8pin-power-cables-safe-for-gpu.2679141/ I don't reach any conclusion.

option 3: Provided that option 1 is too much power in one line can I mix a 6+2 PCIe connector with a Molex Y addition into 8 pin connector?

option 4: The psu also come with an eight pin connector CPU 8-pin EPS12V connector. Some people say that this is not the same sired as the PCIe 6+2 but that can be tweaked and used in place of one eight pin socket in the TITAN. Do you agree? Can I mix both connectors?

Which one do you think is my best option?
Hello sir..
Let me Explain some thing..
Each Conductor in PCIe power connector and ATX power connectors are designed only to handle max to max 5 ampere...

In PCIe 6+2 connector... There are only 3 12v Conductors.. means even at peak These Connector (8pin can do only 180 watts..) without heating up and. Killing things..
So if your GPU have 2* 8pin PCIe Connector.. so your GPU can suck upto (atleast from power connector design) 360 watts from PCIe power Cables... That's too much current form 3x5amp rated conductors.. (cables will not melt first... But connectors and their contact points will heatup and melt nearby plastic...

So. I will not recommend you to use Y connnector...

2. Molex connectors have only 1 12v Conductor. And that conductor is only designed for 2 amps . Means 24 watts.. so with 2 molex Connectors.. can maximum do upto 48 watts...

So molex to 8 pin connector = Fire ...

3. Very Very Dangerous.. can burn your Cables ..

4. CPU ATX connector have very different pinout it uses 4 conductors for 12v and 4 for Ground ..
PCIe 8 pin Connector uses 3 Conductors and 5 Ground (2 of them are used as sense Connectors)
So installing 8 pin CPU commector into 8 pin PCIe Connector = Direct short of PSU,, can kill your GPU, can damage PSUs cable .

Solution.. get 750 watt Rated PSU.. they are same sizes as 550 ones, and have adequate conductors to do your job ..


2nd Very Risky... Chop open your PSU and solder your New String 14AWG Cooper wires to 12v terminal.. and connect 12v Pcie Y headder (i will only do that to see what will gonna happen please don't try this)