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Thread: Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??




  1. #1
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    Default Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??

    Hey all, i just bought the Asrock OC Formula Z97 upgraded from a gigabyte Z68 UD4 B3, but i found out i can't use my 3 PCI E cards without plugging in a legaxy 4 pin molex connector! I have 2 GTX 670s in SLI, but once i install my PCIE x1 Auzentech Forte sound card (in the PCIE x1 port) it tells me i need to install the 4 pin molex connector! The problem is the molex connector is in the bottom left of the mobo and opens down directly over my PSU, there's absolutely no room to fit in the thick molex connector!(my case, like most modern cases, has the PSU in the bottom) I already have 2 separate 8pin connectors connected for the cpu and the 24pin power connector, i just can't fathom, in 2014, for a mobo that requires a molex connector! If i get a PCIE SSD in the future it'll ask me to install the molex connector again, the manual says the molex connector is for 3 graphics card but that's not the case, it's for ANY 3 PCIE cards which doesn't make any sense as the power draw of my tiny sound card is next to nothing.

    Is there anyway in the bios or any switches or tricks on the mobo to enable the use of this tiny sound card without using this molex connector? It makes absolutely no design sense both for the need to use it and then for the location of the molex connector itself!

    If any of you could give me some help that would be greatly appreciated otherwise i'll have to return this mobo as the design and layout is terrible to work with. I expected so much more from their high end Z97 mobo.:(
    Desktop: 4790k @ stock | Noctua NH-D14 | 16GB (2x8gb) Crucial Ballistex @ CL9 | Asrock OC Formula Z97 | Gigabyte GTX 670 SLI | 240gb OCZ Vertex 3 MI & 2TB WD Black | Auzentech Forte 7.1 | Seasonic 760wt Platinum | DELL U2711 @ 1440p | Corsair 300R | Win7
    Ultrabook: Zenbook UX32LN | i5 4200u | 8GB RAM | Nvidia 840m | IPS Matte @ 1080p | 256GB SSD | Win8.1

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    Default Re: Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??

    This might work if you first plug in the connector and then install your power supply.

    Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??-molex-standard-4-pin-low-profile-easy-install-connector-cover-png

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    Default Re: Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??

    Poohbear, any chance you could upload a picture of your rig, just curious to see the problem aswell?
    Thanks
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    Default Re: Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??

    Pooh, when?where? are you being informed "it tells me i need to install the 4 pin molex connector!"


    Joe, HERE's a pic of an ASUS board that has the same 90deg 4-pin molex, that faces downward.

    The 4-pin on the Z97 OC Formula sits beginning at the front of the lowest x16 slot, as shown HERE on a Z77 OC Formula.
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    Default Re: Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??

    Here is a pic of my case and my situation (sorry for the clutter, still finalizing this build and might even return the mobo if i can't find a way around this 3 PCIE card limit).
    Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??-20140902_003028-jpg

    HERE is a pic of the Asrock OC Formula with the molex port pointing down (bottom left of mobo. its bottom right from the purity sound chipset).

    Thanks for any help or directions you can provide.
    Desktop: 4790k @ stock | Noctua NH-D14 | 16GB (2x8gb) Crucial Ballistex @ CL9 | Asrock OC Formula Z97 | Gigabyte GTX 670 SLI | 240gb OCZ Vertex 3 MI & 2TB WD Black | Auzentech Forte 7.1 | Seasonic 760wt Platinum | DELL U2711 @ 1440p | Corsair 300R | Win7
    Ultrabook: Zenbook UX32LN | i5 4200u | 8GB RAM | Nvidia 840m | IPS Matte @ 1080p | 256GB SSD | Win8.1

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    Default Re: Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??

    Quote Originally Posted by - wardog - View Post
    Pooh, when?where? are you being informed "it tells me i need to install the 4 pin molex connector!"


    Joe, HERE's a pic of an ASUS board that has the same 90deg 4-pin molex, that faces downward.

    The 4-pin on the Z97 OC Formula sits beginning at the front of the lowest x16 slot, as shown HERE on a Z77 OC Formula.
    here is the pic that i get when i try to boot with GTX 670 SLI & my PCIE sound card installed:
    Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??-20140901_033052-jpg

    What i'm hoping for is a BIOS option to bypass this or maybe one of the switches on the mobo can allow me to bypass it?
    Last edited by poohbear; 09-01-2014 at 11:57 PM.
    Desktop: 4790k @ stock | Noctua NH-D14 | 16GB (2x8gb) Crucial Ballistex @ CL9 | Asrock OC Formula Z97 | Gigabyte GTX 670 SLI | 240gb OCZ Vertex 3 MI & 2TB WD Black | Auzentech Forte 7.1 | Seasonic 760wt Platinum | DELL U2711 @ 1440p | Corsair 300R | Win7
    Ultrabook: Zenbook UX32LN | i5 4200u | 8GB RAM | Nvidia 840m | IPS Matte @ 1080p | 256GB SSD | Win8.1

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    Default Re: Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??

    There is no BIOS option or jumper/switch that will override the requirement for more power to the PCIe slots.

    It's a power requirement, how can that be ignored? The new "PCIe power connectors" are becoming more common on new boards, to fix power problems when most or all of the PCIe/PCI slots are used with cards.

    Some type of adapter like Prof Jim suggested is your best bet. If you go with a different board, be sure to check where the PCIe power connector is on that board.

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    Default Re: Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??

    but i'm just using a PCIE x1 sound card as my 3rd card, i never had to use any such connector on my Z68 Gigabyte mobo, so it doesn't make sense.:( no other options? i guess i can get a new bigger case that keeps the mobo a little further away from my psu, but it just doesn't seem worth it. An extra $100-$150 just to get my sound card working? onboard audio isn't anywhere near the same league as my Auzentech Forte.:(
    Desktop: 4790k @ stock | Noctua NH-D14 | 16GB (2x8gb) Crucial Ballistex @ CL9 | Asrock OC Formula Z97 | Gigabyte GTX 670 SLI | 240gb OCZ Vertex 3 MI & 2TB WD Black | Auzentech Forte 7.1 | Seasonic 760wt Platinum | DELL U2711 @ 1440p | Corsair 300R | Win7
    Ultrabook: Zenbook UX32LN | i5 4200u | 8GB RAM | Nvidia 840m | IPS Matte @ 1080p | 256GB SSD | Win8.1

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    Default Re: Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??

    Thanks for the Pictures Wardog & Poohbear, If it was me I'd get a bigger case, Putting the molex there is probably not the best place considering most new cases are Psu at the bottom, if you get a larger case then it's ok, my Z77 board has the molex in middle of the board not that I use it, and I have a Psu at top of case, you could try the extender lead as Profjim said, but looks tight...
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    Default Re: Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??

    I still think the low profile four pin connector that Prof Jim posted is the cheapest and easiest solution. The "end cap" type would fit in the small space you have, even if you had to move the mother board temporarily. Meaning unscrew it from the case and lift it up to insert the connector.

    I would get a molex to molex extension cable, trim it down in size if necessary, and add that end cap molex adapter. It is only 17.62mm high total, or 11/16" (0.6937"). The adapter itself is 99 cents.

    Or, here's an adapter from the same eTailer using that same connector: 4-Pin Molex to 90 Degree 4-Pin Molex Power Adapter - FrozenCPU.com

    Anyway to use 3 PCIE cards on OC Formula Z97 without molex connector??-cab-1523-jpg

    Get the adapter above, unscrew the board from the case (with the PC lying on a carpeted floor on its side), carefully lift up the board, plug the adapter in, put the board screws back in again, connect a power cable, done.

    For those that can't see (I'm familiar with this case), the Corsair 300R the OP uses has a metal flange that is part of the case that sticks out perpendicular to the mother board tray. The PSU is slipped under that flange, which protects the board. By a lousy coincidence, that flange is right below the PCIe power connector on the board, so it makes fitting a connector there even harder.

    So your Z68 board did not have/need the PCIe power connector. Did it have the same number of PCIe/PCI slots as your new board does?

    There are reasons why we are now seeing these PCIe power connectors on mother boards, probably to fix issues that happened on earlier boards when multiple PCIe cards were used.

    The 24 pin ATX power connector has only two 12V pins/cables in it! A 20 pin ATX power connector has only one 12V pin! We are also seeing extra four or even eight pin CPU/EPS power connectors on mother boards, besides the standard eight pin CPU power connector.

    Who knows how many issues with video and other cards that are caused by a lack of power?

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