Is the 4 pin ATX12V2 Connector Necessary
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=13856
Printed Date: 04 Nov 2025 at 6:52pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Is the 4 pin ATX12V2 Connector Necessary
Posted By: scjconsulting
Subject: Is the 4 pin ATX12V2 Connector Necessary
Date Posted: 15 Mar 2020 at 5:14am
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On a X570 Steel Legend Motherboard, is a power cable to the 4 pin 12V Power Connector (ATX12V2) necessary? I am using a Corsair RM750x, several years old, and they do not provide such a cable. I don't remember my X399 Taichi having such a requirement. ------------- scjconsulting |
Replies:
Posted By: RLGL
Date Posted: 16 Mar 2020 at 9:49pm
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YES Time to update power supply. ------------- Asrock Z370 Gaming K6,Intel i7 8700K, Asrock x570 Taichi |
Posted By: gizmic
Date Posted: 16 Mar 2020 at 11:11pm
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most boards nowadays have 8 and a 4 pin you dont need to plug both ------------- 
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Posted By: scjconsulting
Date Posted: 17 Mar 2020 at 12:59am
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It does appear that the 4 pin connector is not needed. I don't know of any power supply that has that supports that cable. ------------- scjconsulting |
Posted By: ThreeDee
Date Posted: 17 Mar 2020 at 1:55am
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most higher end psu's come with 2 x 4+4 power pins for 4 and 8 pin mobo headers .. if you start running into stability issues .. especially under full load .. then it would behoove you to get a better psu ------------- |Ryzen 5 5900|ASRock X570 Taichi-BIOS 4.60|2x16GB HyperX Predator RGB 3200@3600 1:1 IF|ASRock RX 6700XT|2 x PCIe 4.0 M.2 Drives for OS & Games|850 WTT Seasonic 80+ Titanium PSU|Noctua NH-D15| |
Posted By: Xaltar
Date Posted: 17 Mar 2020 at 4:36am
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It really depends on the CPU you use, something like a 3900x or 3950x would benefit from the extra power/stability and lower heat that comes with using both the 8 and 4 pin connectors. Not using it means more current being pulled through the 8 pin which in turn creates more heat on that power circuit. Regardless of needed or not there is an actual benefit to connecting it, better efficiency and possibly less heat around the connector and related components. ------------- 
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Posted By: Kasazza
Date Posted: 18 Jul 2022 at 12:16am
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I am building a PC with AsRock Intel H570 Steel Legend + i7-11700 + standard DDR4-3200 RAM modules No planning to overclock RAM or CPU o GPU GPU planned initially a old Geforce 1060 from the today PC The PSU designed for this build is Corsair RM750x which is without outlet for the second ATX12V, but if necessary I may think to return it and buy a new one. Anyway for the planning needs, for the level of GPU I am about to buy in the future, it's very powerful, it may be enough 550-600W... Your recommendations to connect both ATX12V 8+4 plugs is valid also for INTEL CPUs? On the PDF guide of the MoBo it only speaks "... Connecting an ATX 12V 4-pin cable to ATX12V2 is optional. *For advanced overclocking we suggest using this connector together with ATX12V1..." It does not say anything else or more detailed: thank you for every reply! |