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What does this molex do?

Emanuel_M
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So I know a lot of basic parts of computers, and other things, and will I was looking at motherboards for fun, I noticed this http://pcpartpicker.com/part/asrock-motherboard-z97pro3 has a molex connection in the mobo board. Is it needed, does it need to be plugged in, will help the GPU? For example if you run a 750ti that runs of pcie power?

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Supplemental power

Case: Corsair 4000D Airflow; Motherboard: MSI ZZ490 Gaming Edge; CPU: i7 10700K @ 5.1GHz; Cooler: Noctua NHD15S Chromax; RAM: Corsair LPX DDR4 32GB 3200MHz; Graphics Card: Asus RTX 3080 TUF; Power: EVGA SuperNova 750G2; Storage: 2 x Seagate Barracuda 1TB; Crucial M500 240GB & MX100 512GB; Keyboard: Logitech G710+; Mouse: Logitech G502; Headphones / Amp: HiFiMan Sundara / Mayflower Objective 2; Monitor: Asus VG27AQ

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Before Sata was a thing (someone correct me if I am wrong) almost every HDD and CD drive used Molex as a power connector...

 

Now its less commonly used but still serves a purpose.

 

Mind you that purpose isn't much...

PC Build: Project Re-Define | Project Mochii | Personal Rig v3

 

 

 

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Before Sata was a thing (someone correct me if I am wrong) almost every HDD and CD drive used Molex as a power connector...

 

Now its less commonly used but still serves a purpose.

 

Mind you that purpose isn't much...

true yes. There HDD's that had the option to use molex or data power, it had both, for people who had new or old PSU's
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So I know a lot of basic parts of computers, and other things, and will I was looking at motherboards for fun, I noticed this http://pcpartpicker.com/part/asrock-motherboard-z97pro3 has a molex connection in the mobo board. Is it needed, does it need to be plugged in, will help the GPU? For example if you run a 750ti that runs of pcie power?

This is supplying the onboard audio with additional power...  I almost guarantee it.

 

Edit: upon further research, according to the manual ftp://66.226.78.21/manual/Z97%20Pro3.pdf that is to supplement additional power to the PCI-E slots.  Basically this means this motherboard does not meet ATX standards and doesn't have a good power design.

 

"

Please connect a 4 pin molex

power cable to this connector

when more than three

graphics cards are installed." 

Please spend as much time writing your question, as you want me to spend responding to it.  Take some time, and explain your issue, please!

Spoiler

If you need to learn how to install Windows, check here:  http://linustechtips.com/main/topic/324871-guide-how-to-install-windows-the-right-way/

Event Viewer 101: https://youtu.be/GiF9N3fJbnE

 

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This is supplying the onboard audio with additional power...  I almost guarantee it.

 

I don't see why that board needs additional power for the onboard audio....I mean even high-end premium board doesn't require additional power for their "premium" onboard audio

PC Build: Project Re-Define | Project Mochii | Personal Rig v3

 

 

 

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Likely for legacy support considering there are two PCI slots.

Case: Corsair 4000D Airflow; Motherboard: MSI ZZ490 Gaming Edge; CPU: i7 10700K @ 5.1GHz; Cooler: Noctua NHD15S Chromax; RAM: Corsair LPX DDR4 32GB 3200MHz; Graphics Card: Asus RTX 3080 TUF; Power: EVGA SuperNova 750G2; Storage: 2 x Seagate Barracuda 1TB; Crucial M500 240GB & MX100 512GB; Keyboard: Logitech G710+; Mouse: Logitech G502; Headphones / Amp: HiFiMan Sundara / Mayflower Objective 2; Monitor: Asus VG27AQ

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My Maximus vi Formula has it. Supplies addtional power for multiple cards. More of a gaming/overclocking gimmick if you ask me.

i7-5820k @ 4.6ghz w/ H100i || Asus Sabertooth x99 || Gigabyte 980ti G1 ||  EVGA 980ti SC || 32gb DDR4 2666mhz Gskil || 1tb WD Black HDD || Samsung XP941 256gb M.2 PCIe || EVGA 1300w G2 || Corsair 540 w/ Silverstone Sound Dampening Foam || Logisys RGB Led  || Corsair M65 Mouse  & Corsair RGB k70 || A lot of Corsair SP120s

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Some Asrock boards, notably the H97 Fatal1ty requires it when you add any second card alongside a GPU, as a result we no longer use them at work.

CPU: i7 5820K 4.0GHz @1.15V | MOBO: Asus X99 Sabertooth | GPU: Gigabyte Windforce GTX 980Ti, LTT Orange | CASE: NZXT H440 Black 2015 | COOLER: Noctua NH-D15S w/ LTT Fans | RAM: 32GB Patriot 3000MHz | STORAGE: 512GB Samsung 950 Pro, 960GB Sandisk Ultra II 3 x 8TB Seagate HDD's | PSU: 750W Seasonic X series, black / orange cablemod cables| Monitors: 3x Asus VX24AH's | AUDIO OUT: Microlab SOLO 8C, Sennheiser HD 650's, Audio engine D1 Amp / DAC | AUDIO IN: Blue Snowball | Keyboard: CM Storm QuickFire TK MX Green | Mouse: Logitech G900 Proteus Spectrum + RSI Extended Mouse Pad | PCPP Link: http://nz.pcpartpicker.com/list/hPjFd6

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