Two(2) 12V power connections on some X570 boards? - Overclock.net - An Overclocking Community

Forum Jump: 

Two(2) 12V power connections on some X570 boards?

 
Thread Tools
post #1 of 8 (permalink) Old 07-11-2019, 04:27 PM - Thread Starter
15 Year Club
 
Cait Sith Cat's Avatar
 
Join Date: Dec 2004
Location: Texas
Posts: 2,320
Rep: 90 (Unique: 81)
Two(2) 12V power connections on some X570 boards?

Hi. It has been a while since I've looked at builds... I don't know if this is new.

I notice some of the X570 mobos (most, actually) have a 24 pin power, an 8 pin power - both expected. But on many, there is ALSO a 4-pin power slot.

Do those both need connected? Or is it one or the other? Will my 3 year old AX650 power supply have the necessary cabling to supply power to the mobo?

15 years of overclocking!


Cait Sith Cat is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 07-11-2019, 04:33 PM
The last VRM burner
 
Join Date: Mar 2018
Posts: 1,345
Rep: 18 (Unique: 12)
Plug in one 8-pin, pretend the other plug does not exist. It's that relevant.

PC for all
(18 items)
CPU
i7 5775c @4.2GHz/3.8GHz
Motherboard
Gigabyte Z97X Gaming 5
GPU
Sapphire Radeon RX580 8GB Nitro+
RAM
2x KHX2400C11D3/8GX 11-12-12-32-1T-250
Hard Drive
Samsung 850 Pro
Hard Drive
Toshiba HDWD10 (P300)
Power Supply
Corsair CS650M
Cooling
Raijintek Tisis + Arctic Cooling MX4
Case
LianLi 330X
Operating System
Windows 10 64-bit Pro
Monitor
Benq GL2250 80Hz
Keyboard
Corsair Strafe Red
Mouse
SteelSeries Rival 310
Mousepad
SteelSeries QCk Mini
Audio
Audio in Motion SC808 + MUSES8820 + 2 2xLME49990
Audio
AKG M220
Other
NZXT Hue+
Other
Mayflash F300
▲ hide details ▲
BroadPwns is online now  
post #3 of 8 (permalink) Old 07-12-2019, 07:42 AM
curmudgeon
 
miklkit's Avatar
 
Join Date: Apr 2013
Posts: 5,732
Rep: 305 (Unique: 176)
It depends on the cpu and how far you plan on pushing it. For instance, with FX the Sabertooth had one plug and the CHVZ had 2 plugs. Some people running a full water loop and pushing for max OCs on the Sabertooth used so much voltage that they melted that 8 pin plug. Meanwhile I had no problems while running air cooling.


So, what are you planning on doing with your new rig?

IOKIYAR
Junkyard Dog
(18 items)
Blackie
(17 items)
CPU
AMD Ryzen 1700
Motherboard
Biostar X370 GT7
GPU
Sapphire Nitro+ Radeon Vega 64
RAM
G. Skill Ripjaws ddr4 3200 16 GB 4x4
Hard Drive
Samsung 850 EVO 500gb SSD
Hard Drive
Western Digital 500gb
Hard Drive
Samsung 860 evo 1tb ssd
Optical Drive
Memorex Lightscribe dvd
Power Supply
Seasonic 850 watt
Cooling
Thermalright Silver Arrow IB-E Extreme
Case
Silverstone Redline RL05
Operating System
Win 10 64bit
Monitor
Pixio 27" 1440P
Keyboard
yes
Mouse
Evoluent vertical mouse
Mouse
yes
Audio
Creative X-FI
Other
Sennheiser headphones HD 599
CPU
AMD FX8370 @ 5 ghz
Motherboard
ASUS Sabertooth
GPU
Sapphire Fury
RAM
G Skill F3-14900CL9Q-16GBXL
Hard Drive
Western Digital
Hard Drive
Samsung 850 EVO
Optical Drive
Memorex Lightscribe dvd
Power Supply
Seasonic SS-850KM Active PFC F3
Cooling
Thermalright Silver Arrow IB-E Extreme
Case
Silverstone Redline RL02b
Operating System
Win X 64 bit
Monitor
Pixio 27" 1440P
Keyboard
yes
Mouse
Evoluent VM4
Mouse
yes
Audio
Creative Soundblaster Z
Audio
Sennheiser 428 headphones
▲ hide details ▲
miklkit is offline  
Sponsored Links
Advertisement
 
post #4 of 8 (permalink) Old 07-12-2019, 08:28 AM
Overclocking Enthusiast
 
ozlay's Avatar
 
Join Date: Aug 2009
Location: USA
Posts: 5,519
Rep: 273 (Unique: 219)
A single 8pin should be able to provide 600+ watts. However a lot of PSUs can't provide that over a single cable. So they add more then one. However most people will not need more then a single 8pin. Unless you are going to do some ln2 runs.

In Loving Memory Of Kassandra

Kaby
Rikka
(11 items)
CPU
Intel I5-7600k
Motherboard
Asrock Z270M Extreme 4
GPU
Titan X
GPU
Titan X
RAM
Galax HOF
Hard Drive
850 pro
Hard Drive
960 Pro
Hard Drive
970 Evo
Power Supply
Seasonic Prime Snow
Case
enthoo evolv matx tempered glass
Operating System
windows 10 pro
▲ hide details ▲
ozlay is online now  
post #5 of 8 (permalink) Old 07-12-2019, 08:41 AM
New to Overclock.net
 
StAndrew's Avatar
 
Join Date: Sep 2008
Posts: 29
Rep: 1 (Unique: 1)
Some boards used to include an extra 4 pin for PCI-E power requirements, generally for multi 3/4 way GPU's. Hasn't been needed lately due to the trend away from multi GPU. Might have to do with the additional power requirements for PCI-E 4.0...?

Asus Prime Z370, Intel 8700k @5.0Ghz, Nvidia GTX 1080 Ti, 16GB @3400 CL14, Watercooling: x2 MCP355 pumps, x1 280 on front of case, x1 360 on top of case, x1 140 on back of case, x1 240 on bottom of case
StAndrew is offline  
post #6 of 8 (permalink) Old 07-12-2019, 09:37 AM
Nvidia Enthusiast
 
philhalo66's Avatar
 
Join Date: Apr 2009
Location: Maine
Posts: 9,637
Rep: 266 (Unique: 208)
if its for the CPU ignore it, its only there to make you feel better. the mosfets will fail long before you need more than 1 8 pin. check out buildzoid he goes deep into why its stupid.

gaming rig
(17 items)
CPU
Intel Core i9 9900K
Motherboard
GIGABYTE Z390 AORUS PRO
GPU
EVGA GTX 1080 FTW2 2126MHz/11GHz
RAM
G.SKILL Ripjaws V DDR4 3600MHz 16GB
Hard Drive
HGST 2TB
Hard Drive
Seagate 2.5 Inch 2TB
Hard Drive
Kingston UV400 480GB SSD
Optical Drive
LG Blu Ray drive
Power Supply
Corsair RM850i 850W
Cooling
Corsair H115i /W Modded backplate
Case
Corsair C70 Gunmetal
Operating System
windows 10 Pro 1607
Monitor
HP 24W
Monitor
AOC i2269vw
Keyboard
G.SKILL RIPJAWS KM780 MX
Mouse
Razer Deathadder Elite
Audio
Creative X-FI Titanium
▲ hide details ▲
philhalo66 is offline  
post #7 of 8 (permalink) Old 07-12-2019, 10:19 AM
GPU Enthusiast
 
rv8000's Avatar
 
Join Date: Sep 2012
Posts: 2,437
Rep: 191 (Unique: 143)
Quote: Originally Posted by philhalo66 View Post
if its for the CPU ignore it, its only there to make you feel better. the mosfets will fail long before you need more than 1 8 pin. check out buildzoid he goes deep into why its stupid.
^ Ditto

Basically all the the ryzen 3000 series models up to 12 core (most likely the 16 core part) won't pull enough amperage to saturate the single 8pin EPS on air/h2o with OC's. Even on LN2 you'd need to be pulling well over 200a which for daily use and air/water oc's is just not going to happen.

99% of boards will function with just the single 8pin EPS connected.

Steins Gate
(16 items)
CPU
i7 8700k
Motherboard
EVGA Z390 Dark
GPU
Radeon 7
RAM
2x8GB DDR4 3600 c17 @ 4300 c19 2T
Hard Drive
960 Evo
Hard Drive
850 Evo
Power Supply
EVGA 750w G2
Cooling
Thermalright True Spirit 140 Direct
Case
Fractal Design S2
Monitor
Acer ed323qur
Keyboard
CM MK Pro S
Mouse
G703
Mousepad
Logitech Powerplay
Audio
Polk tsi 100
Audio
HD518
Audio
Topping MX3
▲ hide details ▲
rv8000 is offline  
post #8 of 8 (permalink) Old 07-12-2019, 10:53 AM
⤷ αC
 
AlphaC's Avatar
 
Join Date: Sep 2012
Posts: 10,667
Rep: 871 (Unique: 575)
It's marketing, you'll cook the R9 3900X before you exceed 300W unless on subambient.

► Recommended GPU Projects: [email protected] , [email protected] (FP64) (AMD moreso) ► Other notable GPU projects: [email protected] (Nvidia), GPUGrid (Nvidia) ► Project list


AlphaC is online now  
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Overclock.net - An Overclocking Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off